Yak-List Digest Archive

Mon 12/05/05


Total Messages Posted: 27



Today's Message Index:
----------------------
 
     1. 12:16 AM - 2005 List of Contributors - Thank You... (Matt Dralle)
     2. 05:25 AM - Re: Decals (Michael Bolton)
     3. 08:20 AM -  (Robert Schwartz)
     4. 08:39 AM - Re:  (A. Dennis Savarese)
     5. 09:04 AM - Question of the Week: Loss of air pressure on final (Jeff Linebaugh)
     6. 09:36 AM - ICAS (cjpilot710@aol.com)
     7. 09:50 AM - Re: ICAS (Ernest Martinez)
     8. 10:01 AM - Re: Question of the Week: Loss of air pressure on final (A. Dennis Savarese)
     9. 11:32 AM - Re: Question of the Week: Loss of air pressure on final (Roger Doc Kemp)
    10. 12:09 PM - Re: Question of the Week: Loss of air pressure on final (Doug Sapp)
    11. 12:16 PM - Re: Question of the Week: Loss of air pressure on final (A. Dennis Savarese)
    12. 12:23 PM - Re: Question of the Week: Loss of air pressure on final (A. Dennis Savarese)
    13. 12:28 PM - Re: Question of the Week: Loss of air pressure on final (Ernest Martinez)
    14. 12:48 PM - Re: Question of the Week: Loss of air pressure on final (cjpilot710@aol.com)
    15. 12:52 PM - Re: Question of the Week: Loss of air pressure on final (A. Dennis Savarese)
    16. 01:14 PM - Re: Question of the Week: Loss of air pressure on final (Roger Doc Kemp)
    17. 01:21 PM - Re: Question of the Week: Loss of air pressure on final (Roger Doc Kemp)
    18. 01:25 PM - Re: EP of the Week (Bitterlich GS11 Mark G)
    19. 02:09 PM - Re: hoses (Bitterlich GS11 Mark G)
    20. 02:36 PM - Re: Question of the Week: Loss of air pressure on final (Brian Lloyd)
    21. 02:49 PM - Aluminum control surfaces (Frank Haertlein)
    22. 03:09 PM - In memorial (Jerome van der Schaar)
    23. 03:11 PM - Re: Question of the Week: Loss of air pressure on final (Brian Lloyd)
    24. 04:12 PM - FW: In memorial (Doug Sapp)
    25. 04:35 PM - Re: In memorial (Craig Payne)
    26. 04:43 PM - Re: In memorial (Roger Kemp)
    27. 05:00 PM - Re: Question of the Week: Loss of air pressure on final (Roger Kemp)
 
 
 


Message 1


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    Time: 12:16:06 AM PST US
    From: Matt Dralle <dralle@matronics.com>
    Subject: 2005 List of Contributors - Thank You...
    --> Yak-List message posted by: Matt Dralle <dralle@matronics.com> Dear Listers, Let me say *thank you* to everyone that made a Contribution in support of the Lists this year! It was really nice to hear all the great comments people had regarding what the Lists mean to them and how much they look forward to reading the new posts each day. As I have said many times before, running these Lists and creating the many new features is truly a labor of love. This is why your comments of support and appreciation have particular meaning for me. Your generosity during this time of List support only underscores the great sentiments people have made regarding the Lists. If you haven't yet made a Contribution in support of this year's Fund Raiser please feel free to do so. There are still a number of the various Free Gifts to be had as well. Once again, the URL for the Contribution web site is: http://www.matronics.com/contribution I would like to thank Andy Gold of the Builder's Bookstore ( http://www.buildersbooks.com ), Paul Besing of Aeroware Enterprises ( http://www.kitlog.com ), and Jon Croke of Homebuilt HELP ( http://www.homebuilthelp.com ) for their extremely generous support during this year's Fund Raiser through the contribution of merchandise. These are three great guys that support this industry and I encourage each and every Lister to have a look at their respective web sites. Thank you Andy, Paul, and Jon!! Your support is very much appreciated! And finally, below you will find the 2005 List of Contributors current as of 12/4/05! Have a look at this list of names as these are the people that make all of these List services possible! I can't thank each of you enough for your support and great feedback during this year's Fund Raiser! THANK YOU! I will be shipping out all of the gifts in the next few weeks and hope to have everything out by the end of the month. In most cases, gifts will be shipped via US Postal Service. Once again, thank you for making this year's List Fund Raiser successful! Best regards, Matt Dralle Email List Administrator ------------------ 2005 List of Contributors --------------------- Ackerman, John P Ackland, Andrew Ackworth, Robert Adamson, Arden Akerstrom, Ed Alberti, David Alexander, George Allee, Joseph Allen, Mark L Alley, Brian Allington, Wally Allsop, Bryan Alons, Kevin Al, Rupp Altenhein, Gary Anderson, Edward Anderson, John Anderson, Ken Andrews, Ronald Anliker, Mark Anthony, Bruce Anton, Bill Applefeld, Gerald Archer, Matt Ashcraft, Keith Atkinson, Paul Austin, Peter Babb, Tony Bahrns, Stan Baker, Mike Baker, Owen Baker, Roger Baker, Victor Baleshta, Doug Ballenger, James Barba, Alberto Barnes, Thomas Barrie, Darwin Barson, Ron Barter, Tom Basiliere, Rick Bass, George BatchelderJr, Ellery Bates Jr, Marcus Bean, Jim Bean, Robert Bearden, Jeff Beauchamp, Norm Bellach, Robin Bell, Bruce B Bell, Jack Belvin, Thomas Benjamin, Hal Benson, Lonn Benson, Lonnie Berges, Duncan Berg, Wayne Bermudez, John Berner, Walter Bernier, Jim Berry, Bert Berry, Jim Bertz, Gary Berube, Bob Betz, Judie Bezzard, Richard Bickham, John Bidle, Jerry Bieberdorf, Roger Billingsley, Dan Billington, Chuck Bish, Dan Black, Milton Blackwell, Jimmie Blackwell, Rodney Blair, Sean Blank, Stephen Boeshaar, David Boetto, Steve Bohannon, Larry Bollaert, Brian Bonds, Kevin Boothe, Gary Booze, Greg Bope, David Bordelon, Bruce Borger, Robert Boucher, Michel Boulet, Paul Bourne, Larry Bowen, Gordon Bowen, James Bowen, Larry Bowman, Brice Bowman, John Boxill, Mike Boyd, Bill Boyer, James R Boyle, Neville Brame, Charles Brandt, Leroy Brasch, Glenn Breckenridge, Bruce Bressler, Wes Bressler, Wesley Brick, John Brien, Tim Briggs, Gary Brogley, Michael Brooks, John Brooks, Kenyon Brooks, Sterling Broom, Richard Brown, Allen Brown, Bob Brunke, Judy Bryan, Mark Buchanan, Guy Buchmann, Keith Buckthal, Robert Buess, Alfred Bullett, Charles Bullock, Jack Bumhoffer, Al Burden, Ron Burke, James Burkhardt, Michael Burnaby, John Burnett, Ron Burns, Mark Burrill, Phil Burrows, Alan Burton, James Busch, Rob Butcher, James Butcher, Ron Butler, Francis Butler, Sherman Butterfield, John Buyse, Lieven Caldwell, Rick Cannon, Michael Cannon, Paul Cann, Tony Cantrell, Jim Cantrell, Jimmy Capen, Ralph Capra, Sal Cardell, Bill Carillon Sr, Paul Carpenter, Jeffrey Carpenter, Kenneth Carriere, James Carroll, Randy Carter, David Carter, Howard Carter, PaulQ Carter, Preston Cary, William Casson, Perry Challgren, Stanley Chambers, Ken Champion, Robert Chandler, Rick Chang, Ted Chatham, Robert Checkoway, Dan Chelvanayagam, Indran Chenoweth, William Chevaillier, Mason Circle, Roger Clarke, Christopher Clarke, Paddy Clark, James Clark, Michael Clay, Dennis Cleaveland Aircraft Tool Cliff, John Clifford, Dewayne Clyma, Frank Coalwell, Timothy Cochran, Mark Cochran, Stewart Coggins, Mickey Cole, Gary Cole, Gerry Cole, Roger Colucci, Tony Combs, Doyle Combs, Jim Comfort, Gordon Compton, Scott Condrey, Bob Connell, Joseph Conrad, Gerald Constant, Jeremy Cook, Doug Cook, Marc Cooling, John Cooper, James Cooper, Marcus Corbalis, Leo Corder, Michael Corner, Jim Corriveau, Grant Cottingham, Richard Cottrell, Larry Coursey, William Courtney, James Coussons, Herb Cox, John Cravener, Donald Crawford, Corey Creer, Michael Cribb, William Crockett, Jim Crosby, Harry Crosley, Rich Cross, Brian Crothers, Bill Cruikshank, Bruce Culver, Ronald Curtis, William Dalstrom, Douglas Dalton, Bob Daniell, William Danielsen, HansJ%c3%b8rgen Daves, Russell Davidson, Jeff Davies, Brian Davis, Barry Davis, Deems Davis, Robert Dawson, Clif Dawson, Garth Decker, Daniel Decramer, Dick Deford, David De Jong, Jan Delaney, Tom Deloach, Reginald DelPeso, Jose Delsol, Mich%c3%a8le Dennis, Chris Dewees, Ron Dewey, Debbie Dial, Larry Dickson, Robert Dieh, Donald Dietrich, Klaus Disher, John Dominy, Kenneth Donato, John Dondlinger, Leo Doran, Thomas Dorsey, Robert Doud, Herbert Dovey, Martin Doyle, Mike Draper, Mike Dresden, Robert Dufresne, Robert Duke, Gordon Dunne, John Durakovich, David East, David Eckenroth, Paul Edgerton, Wayne Edwards, Ed Edwards, Joe Ehlers, Clyde D Eli, Robert Ellenberger, Christopher Ellenberger, Mike Elliott, Andrew Ellis, Dale Elrod, Michael Engel, Jerry Engh, Duncan England, Charles Erickson, Alan Erickson, Gerald Erickson, Ken Ervin, Thomas Evenson, Roger Fackler, Ken Fair, Deal Falik, Donald Farmer, Daniel Faulkner, Thomas F, Dwight Featherston, Les Feldman, Herb Felker, Timothy Fetterman, Lanny Fillinger, Fred Filucci, Michael Finley, John Fischer, Douglas Fischer, John Fishe, James Fisher, Richard Fitzpatrick, Robert Fix, Douglas Flamini, Dennis Flavin, John Fluent, Grant Flynn, Harold Ford, Dean Ford, John Ford, Michael Forrest, Gerald Forsberg, Erik Fosse, James M Fox, Byron Fox, Stephen Franz, Carl Fray, Jerry Frazier, Ford French, Edwin French, James Fromm, John Fulgham, Bill Fullilove, Ken Fulmer, Joseph Fussell, Larry Fux, Franz Gabbard, Gary Gallagher, Noel Gallenbach, Craig Gantzer, Charles G Gardner, Albert Gardner, Terrence Garland, Doug Garrou, Douglas Gates, Leo Geese, Ronald Geldermann, Daniel Genzlinger, Reade George, Joe George, Neal German, Mark Giacona, William Gibbons, Robert Giddens, Gerald Gillespie, Byron Gillespie, Rl Gilliatt, Jim Glaeser, Dennis Gleason, Mike Goff, George Goguen, Jon Goguen, Nelson Golden, Dennis Goode, Richard Goodings, John Goodridge, Stuart Goolsby, James Gordon, Keith Gottelt, Herbert Gott, Shelby Goudinoff, Peter Gower, Gary Gowing, John Grabb, Gary Graham, Jim Graham Jr, W Doyce Graichen, Peter Grajek, Al Grant, Jordan Grantz, Alan Green, Luther Greenough, Jim Griffin, Bill Griffin, Jim Griffin, Robert Grigson, Greg Grimmonpre, Jerry Groell, Pascal Groote, Curtis Grosse, John Gummo, Thomas Gustafson, Aaron Gwin, Rique Hackler, Douglas Haertlein, Frank Hagar, Steve Hale, Ade Haley, Gary Hall, Charles Hall, Joel Halvorsen, Lyf Hamer, Steve Hamilton, Red Hamilton, William J Hand, Christopher Hankinson, Julian Hanley, BrettAlan Hanley, Mark Hansen, ArnoldKristian Hansen, Graham Happ, Paul Harcourt, David Haring, Robert Harmon, John Harrill, Roy Harrison, Nigel Harrod, Peter Hart, Rob Hasbrouck, John Hatch, Fletcher Hatfield, Cecil Hatfield, William Hauck, John Haverlah, Dennis Haynes, Joel Heaton, Herb Hedrick, Keith Hefferan, Rex Hefner, Jim Hegenauer, Elmar Hegenauer, Manuela Heindl, Karl Hein, Jim Heller, Martin Helming, LarryRobert Henwick, Mark Heritch, Ian Herminghaus, John Herron, Al Hershberger, Edward Herzner, Fred Hetrick, Dale Heykoop, John Hibbing, William Higgins, Floran Hill, Jeff Hill, Ken Hill, Kenneth Hill, StanleyA Hinde, Frank Hodges, Mitchell Hoffman, Allan Hoffman, Carl Holifield, Steve Holland, James Holland, Rick Holliday, Robert Holyoke, Ed Honer, Michael Hooper, Randy Horne, Gilbert Horton, Kevin Howell, Kenneth Howey, Ralph Huft, John Hughes, Robert Hukill, Chris Hunter, Robert Hunt, Malcolm Hunton, Jim Hunt, Wallace Hurd, James Hurn, JohnAllen Hurst, Kingsley Hutchins, Mike Hyde, Ken Isler, Jerry Jacko, Victor W Jaussi, Curtis Jensen, Charles Jensen, Marinus Jernigan, Carroll Jessen, John Johannsson, Johann G Johansson, Max John, Kent Johnsen, Svein Johnson, David Johnson, DennisL Johnson, Forrest Johnson, Ken Johnson, Russell Johnson, William Johnston, Christopher Johnston, Dudley Johnston, Stephen Jones, David Jones, Don W Jones, Eric M Jones, Kenneth Joosten, Craig Jordan, JR Joyce, David Jula, TheodoreF Julian, Raymond Jung, John Jurotich, Matthew Kaluza, Charles Katra, James Kaufmann, Robert Kayner, Dennis Kearney, John Keener, Forest Kelly, Michael Kemp, Roger Kenney, Thomas Kerr, Dennis Kesterton, Donald Kilburg, Larry Killion, Clay Kimsey, Thomas King, John Kinkade, Les Kinne, Russ Kinney, Kevin Kirk, Floyd Kister, Dale Klein, Larry Klingmuller, Lothar Knievel, Gerald Knoll, Barrett Knotts, F Barry Knott, Vernon Kohles, Jerry Koonce, RL Kramer, Ed Krueger, Grant Kruleski, Chet Kulp, David Kummer, Gerald Kuntz, Paul Kuss, Charles Kyle, Fergus Kyle, Larry Lackwitz, Raymond Ladd, Pat Laird, Dave 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Richard Naylor, Doug Needham, James Neilsen, Richard Neitzel, Richard Nelson, James Nelson, Larry Newkirk, Bill Newsum, James Nicely, Vince Nichols, Clem Niles, Bruce Nimigon, David Noyer, Robert Nuckolls Iii, Robert L Nutt, James Obrien, John Ochs, James Ockuly, Bernie Oconnor, Edward O'Day, Jim Offill, Danny O'Hara, Tom Ohnigian, Steve Okeefe, Lawrence Oke, Jim Oldford, David Oliver, Bradley Olsen, Paul Olson, Bob Olson, Brad Olson, Gary Olson, Tim Orear, Jeff Orsborn, Thomas Overgaard, Allan Owens, Donald Packard, Tom Palamarek, Ted Pansier, Don Partyka, LeeM Paulich, John Payne, Craig Pearsall, Don Peck, Kenneth Peerenboom, Paul Pelletier, David Pellien, James Peoples, James Perez, M Domenic Perkinson, Robert Perry, Ilan Perry, Richard Persels, Lyle Peterson, Alex Peterson, David A Petri, David Petty, Paul Pfeifer, Michael Pfundt, Jan Phillips, Mark Phillips, Terrence Pierce, Roger Pierce, Tony Pierson Jr, Edward Pierzina, Michael Pike, Richard Pilling, Kevin Plecenik, Michael 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Michael Sa, Carlos Sagerser, James Sager, Truman Saligman, Ira Sallas, C William Salter, Phillip Sanders, Andrew Sanford, Fred Sapp, Douglas Sargeant, Jack Sargent, Thomas Savarese, Anthony Dennis Sax, Sam Saylor, David Schemmel, Grant Schertz, William Schieber, Cedric Schieffer, Charles Schilf, Richard Schlafly, Fred Schlatterer, Bill Schlosser, Kevin Schmidt, John Schmitendorf, Bill Schneider, Benjamin Schneider, Werner Schoenberger, Robert Schott, Jared Schrader, Kurt Schreck, Ron Schrimmer, Mark Schroeder, Earl Schroeder, John Schulke, Thomas Scott,Jr, Fred W Scott, Mark Scroggs, Ross Seagrave, Scott Seal, John Selby,Jr, Jim Setser, David Seve, Eddie Shablow, John Shafer, James Shanks, Jim Shank, William Shannon, Kevin Sharp, Michael Sharp, Ralph Shaw, Cliff Shaw, Rex Shepherd, Dallas Shepherd, Stanislaus Sheridan, Roger Sherry, James Shiple, Fred Shipley, RobWM Shipley, Walt Shumaker, Jim Siegfried, Oldbob Simmons, Kendall Simpson, Skip Simutis, Frank J Sinclair, Michael Sinke, Jim Sipp, Richard Sisson, Phil Skelly, Brian Skyring, Kerry Slatt, Gary Small, Thomas Smart, Steven Smith, Bret Smith, DannyL Smith, Gene Smith, Jeff Smith, Kirk Smith, Roland Smith, Ronal Smith, Zed Snedaker, Bob Snyder, Bruce Soikkeli, Robert Solecki, John Sparks, Timothy Spaur, Chuck Specht, Stan Spencer, Scott Springer, Gerald Spudis, Robert Staal, Stephen Staley, Dick Starnes, Robert Starn, JH "kabong" Stefan, Leon Steitle, Mark Stelwagon, Frank Stephanak, Bob Stevenson, Will Stewart, Michael Stinemetze, Thomas St-laurent, Ray Stone, Christopher Stone, Jim Strange, Ted Stribling, James Strong, Gary Sutterfield, Stan Swaney, Mark Swankie, Ian Swartout, John Swinford, George Syverson, David Szantho, John B Tarmar, Brian Tasker, Richard Tatro, John Tatz, Norm Tauchen, Bryan Taupier, John Teegarden, Vaughn Testement, John Tew, Stanley Textor, Jack Tezyk, Robert Thatcher, Scott Therrien, Michel Tholen, Tom Thomas, Bruce Thomas, Glenn Thomas, James Thomas, Lee Thomason, Mannan Thomason, Michael Thomas, Stephen Thorp, Kevin Thwing, Randy Tichy, Robert Tilford, Stephen Tillmann, Johan Timm, Peter Timoney, James Tinker, R Rupert Tomlin, Thomas Tomm, Bevan Tompkins, Jeff Toro, Jose Tower, John Trombley, Erich Trost, Sebastian Trotter, Paul Tuck, John Tupper, Kirby Turrell, Mike Turrentine, Donna Tuton, Bill Tyler, George Unruh, Brian Unternaehrer, Rolf Upshaw, Roman Usrey, Reed Utsey, Randy Utterback, ThomasE Vader, Tim Valovich, Paul Vandenberg, Daniel Van Der Voort, Hans VanDerZouw, Henkjan Van Eldik, Anthony Vangrunsven, Stan VanHeeswijk, J Van Lanen, David Van Winkle, Alden Varnes, William Vaughan, Cye Vaughan, Lee Venables, JohnRoger Verdev, Victor Versteeg, Maarten Vervoort, Jef Vetterli, Richard Vinal, Adelbert Vinroot, Robert Vogt, Gary Von Bevern, Brian Von Doymi, Carl VonRuden, Dennis Voss, Richard Vranken, Karel Wade, Jim Wagner Jr, James E Wagoner, Richard Waligroski, Gregg Walker, Robbie Walker, Tommy Walker, Valerie Walker, Weston Walmsley, Brett Walrath, Howard Walsh, Denis Wambolt, Charles Ward, Ann Washburn, Oliver Watson, Terrence Weaver, Fred Webb, Randol Wehner, Clem Weiler, Douglas C Weinstock, Steven Weisfeld, Hans-peter Weiss, Richard Welsch, Philip Welsh, Don Werner, Russell Wetzel, Bob Whelan, Thomas White, Bob White, Charles Whiteley, Kenneth White, Phil Whittfield, Clive Whittington, Dewitt Wigney, John Wilde, Daniel Williamson, Richard Williamson, William Williams, Terry Willis, Tim Wilson, James Wilson, Kelly Winburn, Larry Winings, James Wither, Louis Woboril, David Wood, Larry Woods, Donald Wsiaki, Michael Wynn, Michael Yeamans, David York, Richard Young, Al Young, Dan Young, Dee Young, Greg Zakreski, Steve Zecherle, John Zelinski, Alan Zilz, Dave Zirges, Malcolm Zollinger, Duane Zuniga, Oscar Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551 925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email http://www.matronics.com/ WWW | Featuring Products For Aircraft do not archive


    Message 2


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    Time: 05:25:07 AM PST US
    From: "Michael Bolton" <mjbjhf@charter.net>
    Subject: Re: Decals
    Byron, Just wondering if you might have the time to send me a copy of those graphics? Thats going to be my next prodject. Once we get the new engine and prop here and installed. Thanks, Michael Bolton PO Box 753 Lugoff, SC 29078 803.427.0604 ----- Original Message ----- From: ByronMFox@aol.com To: yak-list@matronics.com Sent: Saturday, December 03, 2005 12:10 PM Subject: Re: Yak-List: Decals Tom, and anybody else, I have the Chinese star and bars in my computer from the sign shop that did mine. Happy to give it to you. It can be taken to any nearby graphics outfit and reproduced. I also have a source, supplied to me by Jeff Linebaugh, for all the Chinese markings on the various exterior panels. Let me know. But, Tom, this is clearly leading to a new look. How are we ever going to recognize your plane? ...Blitz Byron M. Fox 80 Milland Drive Mill Valley, CA 94941 Home 415-380-0907 Cell 415-307-2405


    Message 3


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    Time: 08:20:29 AM PST US
    From: "Robert Schwartz" <schwartzcompany@att.net>
    Subject:
    Gentlemen: I am a recent YAK 52 owner and I have a question. Is there an advantage to recovering the control surfaces in aluminum, rather than replacing the fabric? I have been told that the fabric provides a better platform for aerobatics with a lighter stick and quicker handling. What about aluminum, better cruise speed? is there an advantage to the Yak 52M larger rudder? thanks and I will look forward to the answers from this knowledgeable group ROBERT E. SCHWARTZ Email: schwartzcompany@worldnet.att.net


    Message 4


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    Time: 08:39:04 AM PST US
    From: "A. Dennis Savarese" <dsavarese@elmore.rr.com>
    Subject: Re: e: Yak-List:
    Leave the fabric on the control surfaces. Dennis ----- Original Message ----- From: Robert Schwartz To: yak-list@matronics.com Sent: Monday, December 05, 2005 10:20 AM Subject: Yak-List: Gentlemen: I am a recent YAK 52 owner and I have a question. Is there an advantage to recovering the control surfaces in aluminum, rather than replacing the fabric? I have been told that the fabric provides a better platform for aerobatics with a lighter stick and quicker handling. What about aluminum, better cruise speed? is there an advantage to the Yak 52M larger rudder? thanks and I will look forward to the answers from this knowledgeable group ROBERT E. SCHWARTZ Email: schwartzcompany@worldnet.att.net


    Message 5


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    Time: 09:04:56 AM PST US
    From: Jeff Linebaugh <jefflinebaugh@earthlink.net>
    Subject: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: Jeff Linebaugh <jefflinebaugh@earthlink.net> Most of the points I had in mind have been made on this loss of air pressure situation, but here's a couple more to think about: Air pressure on final 20 and dropping...tough for me to decide whether or not to go around. The big concern is brakes, of course. If you think you have enough to land and stop safely (is there a crosswind?) then press on. Personally, I'd rather not have to fumble with the emergency air handle on short final, or while trying to keep the airplane on the runway. But if I have to.... If you don't have enough air (say it is closer to zero...), and decide to go around, there are some considerations: 1) On the go-around, you will want to raise the flap(s)...raising the flap handle to up will use air. On the CJ, an option is to go to neutral with the flap handle. Slipstream and the bungee will raise the flap without using air. Not sure if this is the case with the Yaks. 2) As Brian mentioned, moving the handle to neutral will probably stop the leak and allow the main air to recharge. It is possible the leak is in the gear selector valve itself. In this case, it might be worth trying the back gear selector, if you have a back seater. 3) The emergency system will supply air to the brakes and the flaps, in addition to the gear. 4) There is a big difference in the CJ and -52 air system in that the compressor will charge both the main and emergency air bottles. On the -52, the emergency air can only be recharged on the ground. 5) Never hesitate to declare an emergency. I have used the "e" word several times, and it has never caused me any trouble with the "authorities". On the contrary, controllers are very helpful and most truely care about your well-being and will do anything they can to help. Here is one more question for everyone: What if the leak is in a gear actuator itself (air blowing by the seal in the actuator)? If you have depleted the main air, and turn on the emergency air, would it be possible to deplete both air sources? Again, I don't pretend to have all the answers, I'd just like to provoke everyone to think about some of the what-ifs... Jeff Jeff Linebaugh jefflinebaugh@earthlink.net http://home.earthlink.net/~jefflinebaugh/ CJ-6P N621CJ Memphis, TN jefflinebaugh@earthlink.net


    Message 6


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    Time: 09:36:42 AM PST US
    From: cjpilot710@aol.com
    Subject: ICAS
    Troops, As many of you know Terry "Pumper" Calloway and myself beat feet down to Orlando for ICAS convention. I was there to get some "free" flying for our members, and Terry let us (RPA) use his booth and his membership to put our name and idea in front of hundreds of airshow sponsors that ply the convention looking for airshow performers. The Blue Angles, T-Birds, Waggstaff, Tucker - are just a few names that are looking for "bookings" there. Some of our members are ICAS performers and were there too. I need to thank Terry for giving me advice and know how on what to expect there. There is certain "flow" on how things happen and to the new guy it could be a little daunting. First the Sure thing. We were able to book one (1) show for certain and received a deposit check. Therefore Springfield, ILL expects 18 airplanes to show up June 22-25, 2006. Next we come to the VERY good "maybes". These sponsors looked at our details, took names and said that they'd send us a contract or needed to look closely at their venue and or budget. We can expect to hear from: Vidalia, Georgia ---- April 29-30 La Cross, WI -------June 17-18 Milwaukee, WI, ---- July (14-15 ??) We had VERY interested inquiries from and may hear from after budget checks. The military guys are really cash strapped by their COs so this sounded like very good deals to them. Particularly since they can have us stay free in BOQ's. MCAS Beaufort, SC --------- April 29-30 (Sly should love this one) Vance AFB, OK -------------- May 20 Springfield, MO. -------------- July 3-4 St. Jo, Mo. --------------------- July 8-9 Grand Forks AFB, ND, ----July 23 Front Range, CO. - ( ? 22-25) ( I can't read my notes) We had other airshow planners pick up our pamphlets and showed passing interest. Redding, CA. being one good one. The Valiant Air Command at Titusville, FL. wants us. But cannot pay the "big donation". They will pay up to $500/aircraft for gas to and from TIX, including fuel and oil for show flying. They will pay $50.00/ day toward hotel rooms and provide transportation to and from hotel. They will wave the VAC membership requirements for us. The date for this show is March 10-11-12. I've put this out as early as I dare, because I want you guys/gals to pre think your dates. Please don't call or e-mail me just yet and I'm not the guys who is supposed to "handle" the scheduling. Those who have already signed up, will hear from somebody. Also some of these shows will be done along with fellow members who have solo acts and our performance will be mixed with theirs. Those who have done these type shows before can tell you we have a great time and meet really neat folks. And it don't cost us much!!!!! For our first time I believe we did very well considering we had just a one page info sheet, a 2 x 3 sign, our RPA flag, and couple of formation pictures off my hangar wall. Thanks again to Terry and Jeff. Jim "Pappy" Goolsby


    Message 7


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    Time: 09:50:38 AM PST US
    From: Ernest Martinez <erniel29@gmail.com>
    Subject: Re: ICAS
    --> Yak-List message posted by: Ernest Martinez <erniel29@gmail.com> Time to really get to work on my commercial ticket. Ernie On 12/5/05, cjpilot710@aol.com <cjpilot710@aol.com> wrote: > > Troops, > > As many of you know Terry "Pumper" Calloway and myself beat feet down to > Orlando for ICAS convention. I was there to get some "free" flying for our > members, and Terry let us (RPA) use his booth and his membership to put our > name and idea in front of hundreds of airshow sponsors that ply the > convention looking for airshow performers. The Blue Angles, T-Birds, > Waggstaff, Tucker - are just a few names that are looking for "bookings" > there. Some of our members are ICAS performers and were there too. > > I need to thank Terry for giving me advice and know how on what to expect > there. There is certain "flow" on how things happen and to the new guy it > could be a little daunting. > > First the Sure thing. > We were able to book one (1) show for certain and received a deposit check. > Therefore Springfield, ILL expects 18 airplanes to show up June 22-25, 2006. > > Next we come to the VERY good "maybes". These sponsors looked at our > details, took names and said that they'd send us a contract or needed to > look closely at their venue and or budget. We can expect to hear from: > > Vidalia, Georgia ---- April 29-30 > La Cross, WI -------June 17-18 > Milwaukee, WI, ---- July (14-15 ??) > > > We had VERY interested inquiries from and may hear from after budget checks. > The military guys are really cash strapped by their COs so this sounded > like very good deals to them. Particularly since they can have us stay free > in BOQ's. > MCAS Beaufort, SC --------- April 29-30 (Sly should love this one) > Vance AFB, OK -------------- May 20 > Springfield, MO. -------------- July 3-4 > St. Jo, Mo. --------------------- July 8-9 > Grand Forks AFB, ND, ----July 23 > Front Range, CO. - ( ? 22-25) ( I can't read my notes) > > We had other airshow planners pick up our pamphlets and showed passing > interest. > Redding, CA. being one good one. > > The Valiant Air Command at Titusville, FL. wants us. But cannot pay the > "big donation". They will pay up to $500/aircraft for gas to and from TIX, > including fuel and oil for show flying. They will pay $50.00/ day toward > hotel rooms and provide transportation to and from hotel. They will wave > the VAC membership requirements for us. The date for this show is March > 10-11-12. > > I've put this out as early as I dare, because I want you guys/gals to pre > think your dates. Please don't call or e-mail me just yet and I'm not the > guys who is supposed to "handle" the scheduling. Those who have already > signed up, will hear from somebody. > > Also some of these shows will be done along with fellow members who have > solo acts and our performance will be mixed with theirs. Those who have > done these type shows before can tell you we have a great time and meet > really neat folks. And it don't cost us much!!!!! > > For our first time I believe we did very well considering we had just a one > page info sheet, a 2 x 3 sign, our RPA flag, and couple of formation > pictures off my hangar wall. > > Thanks again to Terry and Jeff. > > Jim "Pappy" Goolsby > >


    Message 8


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    Time: 10:01:32 AM PST US
    From: "A. Dennis Savarese" <dsavarese@elmore.rr.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com> In my experience, most of the air pressure leaks which appear to be from the gear selector itself are not caused by a faulty gear selector. They are from the internal seals in the actuator leaking which ultimately end up leaking out the opposite side of the actuator and out the gear selector handle. On the Yak 52, placing the front gear selector in the neutral position will discharge whatever air is the actuators. If you are wondering whether this is true or not, review the emergency gear extension procedures for the 52. Step 3 of the procedure is to place the gear selector in neutral. If you understand the pneumatic system on the 52, you'll understand why you put the selector in neutral prior to opening the emergency air valve. Jeff's point about a possible leaking actuator depleting both the main and emergency air tanks if the emergency air valve were to be opened is true. But while true, the absolute first and best thing to do would be to get the gear down and locked. Once down and locked, regardless of whether you have air pressure for the brakes, you will at least have the opportunity land safely. Stopping may of course be a problem if the main system is depleted and you've opened the emergency air valve to extend the gear and there is a leak in an actuator now depleting the air in the emergency system. I think the comment "I'd rather not have to fumble with the emergency air handle on short final", is somewhat correct. But consider this. If the gear is indicating down and locked (remember the first scenario was the gear WAS down with 3 greens showing), there is no reason to "fumble with" the emergency air valve on short final. Concentrate on landing the airplane safely. When the wheels touch and you know you're on the ground safely, now open the emergency air valve. You won't be "fumbling" and the adrenalin level will probably have dropped a bit so you can now think of only one thing and that is stopping the airplane. Unless there is a gaping hole in the side of one of the actuators (not likely), the leak may be there, but not enough to dump the emergency bottle in the 10 to 15 seconds it will take to stop the airplane after touchdown. Air pressure is not required to hold the gear in the down and locked position. Air pressure is required to move the actuator AWAY from the down and locked position and also INTO the down and locked position. But not to keep them down and locked. Once indicating down and locked, no air pressure is needed to keep it there. Although if there is no leak, there is air pressure in the actuator helping to hold the actuator in the down and locked position. On the 52, the emergency system does not supply air to the flaps. So if you're going to use the flaps, it will have to be with air from the main air system. If you're very low or out of air in the main tank and you're about to extend the gear (step 4 of the procedure) using the emergency system and you've followed the emergency procedure for gear extension, it's too late to dump the flaps. So plan on landing without flaps. You need air pressure from the main tank to extend the flaps and the main air valve will now be off anyway if you've extended the gear with the emergency air system. Dennis ----- Original Message ----- From: "Jeff Linebaugh" <jefflinebaugh@earthlink.net> Subject: Yak-List: Question of the Week: Loss of air pressure on final > --> Yak-List message posted by: Jeff Linebaugh > <jefflinebaugh@earthlink.net> > > Most of the points I had in mind have been made on this loss of air > pressure situation, but here's a couple more to think about: > > Air pressure on final 20 and dropping...tough for me to decide whether or > not to go around. The big concern is brakes, of course. If you think you > have enough to land and stop safely (is there a crosswind?) then press on. > Personally, I'd rather not have to fumble with the emergency air handle on > short final, or while trying to keep the airplane on the runway. But if I > have to.... > > If you don't have enough air (say it is closer to zero...), and decide to > go around, there are some considerations: > > 1) On the go-around, you will want to raise the flap(s)...raising the flap > handle to up will use air. On the CJ, an option is to go to neutral with > the flap handle. Slipstream and the bungee will raise the flap without > using air. Not sure if this is the case with the Yaks. > > 2) As Brian mentioned, moving the handle to neutral will probably stop the > leak and allow the main air to recharge. It is possible the leak is in the > gear selector valve itself. In this case, it might be worth trying the > back gear selector, if you have a back seater. > > 3) The emergency system will supply air to the brakes and the flaps, in > addition to the gear. > > 4) There is a big difference in the CJ and -52 air system in that the > compressor will charge both the main and emergency air bottles. On > the -52, the emergency air can only be recharged on the ground. > > 5) Never hesitate to declare an emergency. I have used the "e" word > several times, and it has never caused me any trouble with the > "authorities". On the contrary, controllers are very helpful and most > truely care about your well-being and will do anything they can to help. > > > Here is one more question for everyone: What if the leak is in a gear > actuator itself (air blowing by the seal in the actuator)? If you have > depleted the main air, and turn on the emergency air, would it be possible > to deplete both air sources? > > Again, I don't pretend to have all the answers, I'd just like to provoke > everyone to think about some of the what-ifs... > > Jeff > > Jeff Linebaugh > jefflinebaugh@earthlink.net > http://home.earthlink.net/~jefflinebaugh/ > CJ-6P N621CJ > Memphis, TN > > jefflinebaugh@earthlink.net > > >


    Message 9


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    Time: 11:32:31 AM PST US
    From: "Roger Doc Kemp" <viperdoc@mindspring.com>
    Subject: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> Jeff, Since the gear was already down and locked, I prefer to handle the emergency on the ground. Once on roll out, I can free my right hand up to open the emergency valve to the right of my knee while controlling the a/c with my feet on the rudders. Slide the slide lock to the right, raise the gear handle to neutral and open the Emergency air valve if I am sure I do not have any braking authority. If I landed at my home drome, was not hot, and touched down at my usual touch down point of ~ 200 ft down the RW, then I have 3300 feet to coast to a stop. The rest is academic until I tow it to chocks and re-air up the system. Since this EP occured on short final with the gear extended and 3 green showing. Good one, Doc > [Original Message] > From: Jeff Linebaugh <jefflinebaugh@earthlink.net> > To: <yak-list@matronics.com> > Date: 12/5/2005 11:04:45 AM > Subject: Yak-List: Question of the Week: Loss of air pressure on final > > --> Yak-List message posted by: Jeff Linebaugh <jefflinebaugh@earthlink.net> > > Most of the points I had in mind have been made on this loss of air pressure situation, but here's a couple more to think about: > > Air pressure on final 20 and dropping...tough for me to decide whether or not to go around. The big concern is brakes, of course. If you think you have enough to land and stop safely (is there a crosswind?) then press on. Personally, I'd rather not have to fumble with the emergency air handle on short final, or while trying to keep the airplane on the runway. But if I have to.... > > If you don't have enough air (say it is closer to zero...), and decide to go around, there are some considerations: > > 1) On the go-around, you will want to raise the flap(s)...raising the flap handle to up will use air. On the CJ, an option is to go to neutral with the flap handle. Slipstream and the bungee will raise the flap without using air. Not sure if this is the case with the Yaks. > > 2) As Brian mentioned, moving the handle to neutral will probably stop the leak and allow the main air to recharge. It is possible the leak is in the gear selector valve itself. In this case, it might be worth trying the back gear selector, if you have a back seater. > > 3) The emergency system will supply air to the brakes and the flaps, in addition to the gear. > > 4) There is a big difference in the CJ and -52 air system in that the compressor will charge both the main and emergency air bottles. On the -52, the emergency air can only be recharged on the ground. > > 5) Never hesitate to declare an emergency. I have used the "e" word several times, and it has never caused me any trouble with the "authorities". On the contrary, controllers are very helpful and most truely care about your well-being and will do anything they can to help. > > > > Here is one more question for everyone: What if the leak is in a gear actuator itself (air blowing by the seal in the actuator)? If you have depleted the main air, and turn on the emergency air, would it be possible to deplete both air sources? > > Again, I don't pretend to have all the answers, I'd just like to provoke everyone to think about some of the what-ifs... > > Jeff > > Jeff Linebaugh > jefflinebaugh@earthlink.net > http://home.earthlink.net/~jefflinebaugh/ > CJ-6P N621CJ > Memphis, TN > > jefflinebaugh@earthlink.net > > > > > > >


    Message 10


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    Time: 12:09:24 PM PST US
    From: "Doug Sapp" <rvfltd@televar.com>
    Subject: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com> Just a point that might be worth discussing. I was told by an old Chinese CJ6 instructor pilot that the Chinese teach to ALWAYS land with canopies open when there is ANY hint of an emergency. Might be sage advice well worth considering as it just might buy you the few seconds you need should things really decide to go south on you. Always Yakin, Doug Sapp -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of Roger Doc Kemp Subject: RE: Yak-List: Question of the Week: Loss of air pressure on final --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> Jeff, Since the gear was already down and locked, I prefer to handle the emergency on the ground. Once on roll out, I can free my right hand up to open the emergency valve to the right of my knee while controlling the a/c with my feet on the rudders. Slide the slide lock to the right, raise the gear handle to neutral and open the Emergency air valve if I am sure I do not have any braking authority. If I landed at my home drome, was not hot, and touched down at my usual touch down point of ~ 200 ft down the RW, then I have 3300 feet to coast to a stop. The rest is academic until I tow it to chocks and re-air up the system. Since this EP occured on short final with the gear extended and 3 green showing. Good one, Doc > [Original Message] > From: Jeff Linebaugh <jefflinebaugh@earthlink.net> > To: <yak-list@matronics.com> > Date: 12/5/2005 11:04:45 AM > Subject: Yak-List: Question of the Week: Loss of air pressure on final > > --> Yak-List message posted by: Jeff Linebaugh <jefflinebaugh@earthlink.net> > > Most of the points I had in mind have been made on this loss of air pressure situation, but here's a couple more to think about: > > Air pressure on final 20 and dropping...tough for me to decide whether or not to go around. The big concern is brakes, of course. If you think you have enough to land and stop safely (is there a crosswind?) then press on. Personally, I'd rather not have to fumble with the emergency air handle on short final, or while trying to keep the airplane on the runway. But if I have to.... > > If you don't have enough air (say it is closer to zero...), and decide to go around, there are some considerations: > > 1) On the go-around, you will want to raise the flap(s)...raising the flap handle to up will use air. On the CJ, an option is to go to neutral with the flap handle. Slipstream and the bungee will raise the flap without using air. Not sure if this is the case with the Yaks. > > 2) As Brian mentioned, moving the handle to neutral will probably stop the leak and allow the main air to recharge. It is possible the leak is in the gear selector valve itself. In this case, it might be worth trying the back gear selector, if you have a back seater. > > 3) The emergency system will supply air to the brakes and the flaps, in addition to the gear. > > 4) There is a big difference in the CJ and -52 air system in that the compressor will charge both the main and emergency air bottles. On the -52, the emergency air can only be recharged on the ground. > > 5) Never hesitate to declare an emergency. I have used the "e" word several times, and it has never caused me any trouble with the "authorities". On the contrary, controllers are very helpful and most truely care about your well-being and will do anything they can to help. > > > Here is one more question for everyone: What if the leak is in a gear actuator itself (air blowing by the seal in the actuator)? If you have depleted the main air, and turn on the emergency air, would it be possible to deplete both air sources? > > Again, I don't pretend to have all the answers, I'd just like to provoke everyone to think about some of the what-ifs... > > Jeff > > Jeff Linebaugh > jefflinebaugh@earthlink.net > http://home.earthlink.net/~jefflinebaugh/ > CJ-6P N621CJ > Memphis, TN > > jefflinebaugh@earthlink.net > >


    Message 11


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    Time: 12:16:02 PM PST US
    From: "A. Dennis Savarese" <dsavarese@elmore.rr.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com> I agree 100% with Doc that it would be best to deal with this situation while on the ground. Particularly since the original scenario had the gear already down and locked. Actually Doc, since the gear is already down and locked, you don't have to put the gear handle in neutral before you open the emergency air valve. The only reason you do put the gear handle in neutral is to depressurize the actuators so the shuttle valve moves and the actuator pressurizes when the emergency valve is opened. Save all the air pressure you can by not putting the handle in neutral in this situation. By opening the emergency valve on the ground with the gear already down and locked, the air from the emergency air tank will be used for the brakes. If one or more of the actuators is leaking, when you open the emergency air valve the system will try to repressurize the actuators without air pressure in them. Which is an "I could give a crap about that right now" situation. Dennis ----- Original Message ----- From: "Roger Doc Kemp" <viperdoc@mindspring.com> Subject: RE: Yak-List: Question of the Week: Loss of air pressure on final > --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> > > Jeff, > Since the gear was already down and locked, I prefer to handle the > emergency on the ground. Once on roll out, I can free my right hand up to > open the emergency valve to the right of my knee while controlling the a/c > with my feet on the rudders. Slide the slide lock to the right, raise the > gear handle to neutral and open the Emergency air valve if I am sure I do > not have any braking authority. If I landed at my home drome, was not hot, > and touched down at my usual touch down point of ~ 200 ft down the RW, > then > I have 3300 feet to coast to a stop. The rest is academic until I tow it > to > chocks and re-air up the system. Since this EP occured on short final with > the gear extended and 3 green showing. > Good one, > Doc > > >> [Original Message] >> From: Jeff Linebaugh <jefflinebaugh@earthlink.net> >> To: <yak-list@matronics.com> >> Date: 12/5/2005 11:04:45 AM >> Subject: Yak-List: Question of the Week: Loss of air pressure on final >> >> --> Yak-List message posted by: Jeff Linebaugh > <jefflinebaugh@earthlink.net> >> >> Most of the points I had in mind have been made on this loss of air > pressure situation, but here's a couple more to think about: >> >> Air pressure on final 20 and dropping...tough for me to decide whether or > not to go around. The big concern is brakes, of course. If you think you > have enough to land and stop safely (is there a crosswind?) then press on. > Personally, I'd rather not have to fumble with the emergency air handle on > short final, or while trying to keep the airplane on the runway. But if I > have to.... >> >> If you don't have enough air (say it is closer to zero...), and decide to > go around, there are some considerations: >> >> 1) On the go-around, you will want to raise the flap(s)...raising the > flap handle to up will use air. On the CJ, an option is to go to neutral > with the flap handle. Slipstream and the bungee will raise the flap > without > using air. Not sure if this is the case with the Yaks. >> >> 2) As Brian mentioned, moving the handle to neutral will probably stop > the leak and allow the main air to recharge. It is possible the leak is in > the gear selector valve itself. In this case, it might be worth trying the > back gear selector, if you have a back seater. >> >> 3) The emergency system will supply air to the brakes and the flaps, in > addition to the gear. >> >> 4) There is a big difference in the CJ and -52 air system in that the > compressor will charge both the main and emergency air bottles. On the > -52, the emergency air can only be recharged on the ground. >> >> 5) Never hesitate to declare an emergency. I have used the "e" word > several times, and it has never caused me any trouble with the > "authorities". On the contrary, controllers are very helpful and most > truely care about your well-being and will do anything they can to help. >> >> >> >> Here is one more question for everyone: What if the leak is in a gear > actuator itself (air blowing by the seal in the actuator)? If you have > depleted the main air, and turn on the emergency air, would it be possible > to deplete both air sources? >> >> Again, I don't pretend to have all the answers, I'd just like to provoke > everyone to think about some of the what-ifs... >> >> Jeff >> >> Jeff Linebaugh >> jefflinebaugh@earthlink.net >> http://home.earthlink.net/~jefflinebaugh/ >> CJ-6P N621CJ >> Memphis, TN >> >> jefflinebaugh@earthlink.net >> >> >> >> >> >> >> >> >> >> >> > > >


    Message 12


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    Time: 12:23:30 PM PST US
    From: "A. Dennis Savarese" <dsavarese@elmore.rr.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com> Excellent point Doug. Dennis ----- Original Message ----- From: "Doug Sapp" <rvfltd@televar.com> Subject: RE: Yak-List: Question of the Week: Loss of air pressure on final > --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com> > > Just a point that might be worth discussing. I was told by an old Chinese > CJ6 instructor pilot that the Chinese teach to ALWAYS land with canopies > open when there is ANY hint of an emergency. Might be sage advice well > worth > considering as it just might buy you the few seconds you need should > things > really decide to go south on you. > > Always Yakin, > Doug Sapp > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com]On Behalf Of Roger Doc Kemp > Sent: Monday, December 05, 2005 11:32 AM > To: yak-list@matronics.com > Subject: RE: Yak-List: Question of the Week: Loss of air pressure on > final > > > --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> > > Jeff, > Since the gear was already down and locked, I prefer to handle the > emergency on the ground. Once on roll out, I can free my right hand up to > open the emergency valve to the right of my knee while controlling the a/c > with my feet on the rudders. Slide the slide lock to the right, raise the > gear handle to neutral and open the Emergency air valve if I am sure I do > not have any braking authority. If I landed at my home drome, was not hot, > and touched down at my usual touch down point of ~ 200 ft down the RW, > then > I have 3300 feet to coast to a stop. The rest is academic until I tow it > to > chocks and re-air up the system. Since this EP occured on short final with > the gear extended and 3 green showing. > Good one, > Doc > > >> [Original Message] >> From: Jeff Linebaugh <jefflinebaugh@earthlink.net> >> To: <yak-list@matronics.com> >> Date: 12/5/2005 11:04:45 AM >> Subject: Yak-List: Question of the Week: Loss of air pressure on final >> >> --> Yak-List message posted by: Jeff Linebaugh > <jefflinebaugh@earthlink.net> >> >> Most of the points I had in mind have been made on this loss of air > pressure situation, but here's a couple more to think about: >> >> Air pressure on final 20 and dropping...tough for me to decide whether or > not to go around. The big concern is brakes, of course. If you think you > have enough to land and stop safely (is there a crosswind?) then press on. > Personally, I'd rather not have to fumble with the emergency air handle on > short final, or while trying to keep the airplane on the runway. But if I > have to.... >> >> If you don't have enough air (say it is closer to zero...), and decide to > go around, there are some considerations: >> >> 1) On the go-around, you will want to raise the flap(s)...raising the > flap handle to up will use air. On the CJ, an option is to go to neutral > with the flap handle. Slipstream and the bungee will raise the flap > without > using air. Not sure if this is the case with the Yaks. >> >> 2) As Brian mentioned, moving the handle to neutral will probably stop > the leak and allow the main air to recharge. It is possible the leak is in > the gear selector valve itself. In this case, it might be worth trying the > back gear selector, if you have a back seater. >> >> 3) The emergency system will supply air to the brakes and the flaps, in > addition to the gear. >> >> 4) There is a big difference in the CJ and -52 air system in that the > compressor will charge both the main and emergency air bottles. On the > -52, the emergency air can only be recharged on the ground. >> >> 5) Never hesitate to declare an emergency. I have used the "e" word > several times, and it has never caused me any trouble with the > "authorities". On the contrary, controllers are very helpful and most > truely care about your well-being and will do anything they can to help. >> >> >> >> Here is one more question for everyone: What if the leak is in a gear > actuator itself (air blowing by the seal in the actuator)? If you have > depleted the main air, and turn on the emergency air, would it be possible > to deplete both air sources? >> >> Again, I don't pretend to have all the answers, I'd just like to provoke > everyone to think about some of the what-ifs... >> >> Jeff >> >> Jeff Linebaugh >> jefflinebaugh@earthlink.net >> http://home.earthlink.net/~jefflinebaugh/ >> CJ-6P N621CJ >> Memphis, TN >> >> jefflinebaugh@earthlink.net >> >> >> >> >> >> >> >> >> >> >> > > >


    Message 13


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    Time: 12:28:40 PM PST US
    From: Ernest Martinez <erniel29@gmail.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: Ernest Martinez <erniel29@gmail.com> Is there any additional drag induced with the canopies open? Something to think about if you were on a slow final in anticipation of no brakes. Ernie On 12/5/05, Doug Sapp <rvfltd@televar.com> wrote: > --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com> > > Just a point that might be worth discussing. I was told by an old Chinese > CJ6 instructor pilot that the Chinese teach to ALWAYS land with canopies > open when there is ANY hint of an emergency. Might be sage advice well worth > considering as it just might buy you the few seconds you need should things > really decide to go south on you. > > Always Yakin, > Doug Sapp > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com]On Behalf Of Roger Doc Kemp > Sent: Monday, December 05, 2005 11:32 AM > To: yak-list@matronics.com > Subject: RE: Yak-List: Question of the Week: Loss of air pressure on > final > > > --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> > > Jeff, > Since the gear was already down and locked, I prefer to handle the > emergency on the ground. Once on roll out, I can free my right hand up to > open the emergency valve to the right of my knee while controlling the a/c > with my feet on the rudders. Slide the slide lock to the right, raise the > gear handle to neutral and open the Emergency air valve if I am sure I do > not have any braking authority. If I landed at my home drome, was not hot, > and touched down at my usual touch down point of ~ 200 ft down the RW, then > I have 3300 feet to coast to a stop. The rest is academic until I tow it to > chocks and re-air up the system. Since this EP occured on short final with > the gear extended and 3 green showing. > Good one, > Doc > > > > [Original Message] > > From: Jeff Linebaugh <jefflinebaugh@earthlink.net> > > To: <yak-list@matronics.com> > > Date: 12/5/2005 11:04:45 AM > > Subject: Yak-List: Question of the Week: Loss of air pressure on final > > > > --> Yak-List message posted by: Jeff Linebaugh > <jefflinebaugh@earthlink.net> > > > > Most of the points I had in mind have been made on this loss of air > pressure situation, but here's a couple more to think about: > > > > Air pressure on final 20 and dropping...tough for me to decide whether or > not to go around. The big concern is brakes, of course. If you think you > have enough to land and stop safely (is there a crosswind?) then press on. > Personally, I'd rather not have to fumble with the emergency air handle on > short final, or while trying to keep the airplane on the runway. But if I > have to.... > > > > If you don't have enough air (say it is closer to zero...), and decide to > go around, there are some considerations: > > > > 1) On the go-around, you will want to raise the flap(s)...raising the > flap handle to up will use air. On the CJ, an option is to go to neutral > with the flap handle. Slipstream and the bungee will raise the flap without > using air. Not sure if this is the case with the Yaks. > > > > 2) As Brian mentioned, moving the handle to neutral will probably stop > the leak and allow the main air to recharge. It is possible the leak is in > the gear selector valve itself. In this case, it might be worth trying the > back gear selector, if you have a back seater. > > > > 3) The emergency system will supply air to the brakes and the flaps, in > addition to the gear. > > > > 4) There is a big difference in the CJ and -52 air system in that the > compressor will charge both the main and emergency air bottles. On the > -52, the emergency air can only be recharged on the ground. > > > > 5) Never hesitate to declare an emergency. I have used the "e" word > several times, and it has never caused me any trouble with the > "authorities". On the contrary, controllers are very helpful and most > truely care about your well-being and will do anything they can to help. > > > > > > > > Here is one more question for everyone: What if the leak is in a gear > actuator itself (air blowing by the seal in the actuator)? If you have > depleted the main air, and turn on the emergency air, would it be possible > to deplete both air sources? > > > > Again, I don't pretend to have all the answers, I'd just like to provoke > everyone to think about some of the what-ifs... > > > > Jeff > > > > Jeff Linebaugh > > jefflinebaugh@earthlink.net > > http://home.earthlink.net/~jefflinebaugh/ > > CJ-6P N621CJ > > Memphis, TN > > > > jefflinebaugh@earthlink.net > > > > > > > > > > > > > > > > > > > > > > > >


    Message 14


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    Time: 12:48:31 PM PST US
    From: cjpilot710@aol.com
    Subject: Re: Question of the Week: Loss of air pressure on final
    No drag problems at all. I make a point to land all the time with canopy open. There are numerous places that one can loose air in these system. I've lost air (and still do to a lesser extent) though the flap actuator. (The seals are not perfect I guess). Making sure the flap handle is in neutral "seals" the leak. I seem to remember in the books somewhere that the minimum pressure to operate the gear is 25 atom and to have break pressure a minimum of 10 atoms is required. Pappy


    Message 15


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    Time: 12:52:46 PM PST US
    From: "A. Dennis Savarese" <dsavarese@elmore.rr.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com> Definitely if the rear canopy is open and I'd guess also true if the front only is open. Dennis ----- Original Message ----- From: "Ernest Martinez" <erniel29@gmail.com> Subject: Re: Yak-List: Question of the Week: Loss of air pressure on final > --> Yak-List message posted by: Ernest Martinez <erniel29@gmail.com> > > Is there any additional drag induced with the canopies open? Something > to think about if you were on a slow final in anticipation of no > brakes. > > Ernie > > On 12/5/05, Doug Sapp <rvfltd@televar.com> wrote: >> --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com> >> >> Just a point that might be worth discussing. I was told by an old >> Chinese >> CJ6 instructor pilot that the Chinese teach to ALWAYS land with canopies >> open when there is ANY hint of an emergency. Might be sage advice well >> worth >> considering as it just might buy you the few seconds you need should >> things >> really decide to go south on you. >> >> Always Yakin, >> Doug Sapp >> >> -----Original Message----- >> From: owner-yak-list-server@matronics.com >> [mailto:owner-yak-list-server@matronics.com]On Behalf Of Roger Doc Kemp >> Sent: Monday, December 05, 2005 11:32 AM >> To: yak-list@matronics.com >> Subject: RE: Yak-List: Question of the Week: Loss of air pressure on >> final >> >> >> --> Yak-List message posted by: "Roger Doc Kemp" >> <viperdoc@mindspring.com> >> >> Jeff, >> Since the gear was already down and locked, I prefer to handle the >> emergency on the ground. Once on roll out, I can free my right hand up to >> open the emergency valve to the right of my knee while controlling the >> a/c >> with my feet on the rudders. Slide the slide lock to the right, raise the >> gear handle to neutral and open the Emergency air valve if I am sure I do >> not have any braking authority. If I landed at my home drome, was not >> hot, >> and touched down at my usual touch down point of ~ 200 ft down the RW, >> then >> I have 3300 feet to coast to a stop. The rest is academic until I tow it >> to >> chocks and re-air up the system. Since this EP occured on short final >> with >> the gear extended and 3 green showing. >> Good one, >> Doc >> >> >> > [Original Message] >> > From: Jeff Linebaugh <jefflinebaugh@earthlink.net> >> > To: <yak-list@matronics.com> >> > Date: 12/5/2005 11:04:45 AM >> > Subject: Yak-List: Question of the Week: Loss of air pressure on final >> > >> > --> Yak-List message posted by: Jeff Linebaugh >> <jefflinebaugh@earthlink.net> >> > >> > Most of the points I had in mind have been made on this loss of air >> pressure situation, but here's a couple more to think about: >> > >> > Air pressure on final 20 and dropping...tough for me to decide whether >> > or >> not to go around. The big concern is brakes, of course. If you think you >> have enough to land and stop safely (is there a crosswind?) then press >> on. >> Personally, I'd rather not have to fumble with the emergency air handle >> on >> short final, or while trying to keep the airplane on the runway. But if I >> have to.... >> > >> > If you don't have enough air (say it is closer to zero...), and decide >> > to >> go around, there are some considerations: >> > >> > 1) On the go-around, you will want to raise the flap(s)...raising the >> flap handle to up will use air. On the CJ, an option is to go to neutral >> with the flap handle. Slipstream and the bungee will raise the flap >> without >> using air. Not sure if this is the case with the Yaks. >> > >> > 2) As Brian mentioned, moving the handle to neutral will probably stop >> the leak and allow the main air to recharge. It is possible the leak is >> in >> the gear selector valve itself. In this case, it might be worth trying >> the >> back gear selector, if you have a back seater. >> > >> > 3) The emergency system will supply air to the brakes and the flaps, in >> addition to the gear. >> > >> > 4) There is a big difference in the CJ and -52 air system in that the >> compressor will charge both the main and emergency air bottles. On the >> -52, the emergency air can only be recharged on the ground. >> > >> > 5) Never hesitate to declare an emergency. I have used the "e" word >> several times, and it has never caused me any trouble with the >> "authorities". On the contrary, controllers are very helpful and most >> truely care about your well-being and will do anything they can to help. >> > >> > >> > >> > Here is one more question for everyone: What if the leak is in a gear >> actuator itself (air blowing by the seal in the actuator)? If you have >> depleted the main air, and turn on the emergency air, would it be >> possible >> to deplete both air sources? >> > >> > Again, I don't pretend to have all the answers, I'd just like to >> > provoke >> everyone to think about some of the what-ifs... >> > >> > Jeff >> > >> > Jeff Linebaugh >> > jefflinebaugh@earthlink.net >> > http://home.earthlink.net/~jefflinebaugh/ >> > CJ-6P N621CJ >> > Memphis, TN >> > >> > jefflinebaugh@earthlink.net >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> > > >


    Message 16


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    Time: 01:14:49 PM PST US
    From: "Roger Doc Kemp" <viperdoc@mindspring.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> Simple answer, Yes. Acts like a giant speed brake. Doc > [Original Message] > From: Ernest Martinez <erniel29@gmail.com> > To: <yak-list@matronics.com> > Date: 12/5/2005 2:28:20 PM > Subject: Re: Yak-List: Question of the Week: Loss of air pressure on final > > --> Yak-List message posted by: Ernest Martinez <erniel29@gmail.com> > > Is there any additional drag induced with the canopies open? Something > to think about if you were on a slow final in anticipation of no > brakes. > > Ernie > > On 12/5/05, Doug Sapp <rvfltd@televar.com> wrote: > > --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com> > > > > Just a point that might be worth discussing. I was told by an old Chinese > > CJ6 instructor pilot that the Chinese teach to ALWAYS land with canopies > > open when there is ANY hint of an emergency. Might be sage advice well worth > > considering as it just might buy you the few seconds you need should things > > really decide to go south on you. > > > > Always Yakin, > > Doug Sapp > > > > -----Original Message----- > > From: owner-yak-list-server@matronics.com > > [mailto:owner-yak-list-server@matronics.com]On Behalf Of Roger Doc Kemp > > Sent: Monday, December 05, 2005 11:32 AM > > To: yak-list@matronics.com > > Subject: RE: Yak-List: Question of the Week: Loss of air pressure on > > final > > > > > > --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> > > > > Jeff, > > Since the gear was already down and locked, I prefer to handle the > > emergency on the ground. Once on roll out, I can free my right hand up to > > open the emergency valve to the right of my knee while controlling the a/c > > with my feet on the rudders. Slide the slide lock to the right, raise the > > gear handle to neutral and open the Emergency air valve if I am sure I do > > not have any braking authority. If I landed at my home drome, was not hot, > > and touched down at my usual touch down point of ~ 200 ft down the RW, then > > I have 3300 feet to coast to a stop. The rest is academic until I tow it to > > chocks and re-air up the system. Since this EP occured on short final with > > the gear extended and 3 green showing. > > Good one, > > Doc > > > > > > > [Original Message] > > > From: Jeff Linebaugh <jefflinebaugh@earthlink.net> > > > To: <yak-list@matronics.com> > > > Date: 12/5/2005 11:04:45 AM > > > Subject: Yak-List: Question of the Week: Loss of air pressure on final > > > > > > --> Yak-List message posted by: Jeff Linebaugh > > <jefflinebaugh@earthlink.net> > > > > > > Most of the points I had in mind have been made on this loss of air > > pressure situation, but here's a couple more to think about: > > > > > > Air pressure on final 20 and dropping...tough for me to decide whether or > > not to go around. The big concern is brakes, of course. If you think you > > have enough to land and stop safely (is there a crosswind?) then press on. > > Personally, I'd rather not have to fumble with the emergency air handle on > > short final, or while trying to keep the airplane on the runway. But if I > > have to.... > > > > > > If you don't have enough air (say it is closer to zero...), and decide to > > go around, there are some considerations: > > > > > > 1) On the go-around, you will want to raise the flap(s)...raising the > > flap handle to up will use air. On the CJ, an option is to go to neutral > > with the flap handle. Slipstream and the bungee will raise the flap without > > using air. Not sure if this is the case with the Yaks. > > > > > > 2) As Brian mentioned, moving the handle to neutral will probably stop > > the leak and allow the main air to recharge. It is possible the leak is in > > the gear selector valve itself. In this case, it might be worth trying the > > back gear selector, if you have a back seater. > > > > > > 3) The emergency system will supply air to the brakes and the flaps, in > > addition to the gear. > > > > > > 4) There is a big difference in the CJ and -52 air system in that the > > compressor will charge both the main and emergency air bottles. On the > > -52, the emergency air can only be recharged on the ground. > > > > > > 5) Never hesitate to declare an emergency. I have used the "e" word > > several times, and it has never caused me any trouble with the > > "authorities". On the contrary, controllers are very helpful and most > > truely care about your well-being and will do anything they can to help. > > > > > > > > > > > > Here is one more question for everyone: What if the leak is in a gear > > actuator itself (air blowing by the seal in the actuator)? If you have > > depleted the main air, and turn on the emergency air, would it be possible > > to deplete both air sources? > > > > > > Again, I don't pretend to have all the answers, I'd just like to provoke > > everyone to think about some of the what-ifs... > > > > > > Jeff > > > > > > Jeff Linebaugh > > > jefflinebaugh@earthlink.net > > > http://home.earthlink.net/~jefflinebaugh/ > > > CJ-6P N621CJ > > > Memphis, TN > > > > > > jefflinebaugh@earthlink.net > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >


    Message 17


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    Time: 01:21:03 PM PST US
    From: "Roger Doc Kemp" <viperdoc@mindspring.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> Now that you point that out...I remember that now! Slow day at the orifice...must be the weather change. All my patients that showed up had tight sphincters and their circuit brakers popped! Thanks, Doc > [Original Message] > From: A. Dennis Savarese <dsavarese@elmore.rr.com> > To: <yak-list@matronics.com> > Date: 12/5/2005 2:15:50 PM > Subject: Re: Yak-List: Question of the Week: Loss of air pressure on final > > --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com> > > I agree 100% with Doc that it would be best to deal with this situation > while on the ground. Particularly since the original scenario had the gear > already down and locked. > > Actually Doc, since the gear is already down and locked, you don't have to > put the gear handle in neutral before you open the emergency air valve. The > only reason you do put the gear handle in neutral is to depressurize the > actuators so the shuttle valve moves and the actuator pressurizes when the > emergency valve is opened. Save all the air pressure you can by not > putting the handle in neutral in this situation. > > By opening the emergency valve on the ground with the gear already down and > locked, the air from the emergency air tank will be used for the brakes. If > one or more of the actuators is leaking, when you open the emergency air > valve the system will try to repressurize the actuators without air pressure > in them. Which is an "I could give a crap about that right now" situation. > > Dennis > > ----- Original Message ----- > From: "Roger Doc Kemp" <viperdoc@mindspring.com> > To: <yak-list@matronics.com> > Sent: Monday, December 05, 2005 1:31 PM > Subject: RE: Yak-List: Question of the Week: Loss of air pressure on final > > > > --> Yak-List message posted by: "Roger Doc Kemp" <viperdoc@mindspring.com> > > > > Jeff, > > Since the gear was already down and locked, I prefer to handle the > > emergency on the ground. Once on roll out, I can free my right hand up to > > open the emergency valve to the right of my knee while controlling the a/c > > with my feet on the rudders. Slide the slide lock to the right, raise the > > gear handle to neutral and open the Emergency air valve if I am sure I do > > not have any braking authority. If I landed at my home drome, was not hot, > > and touched down at my usual touch down point of ~ 200 ft down the RW, > > then > > I have 3300 feet to coast to a stop. The rest is academic until I tow it > > to > > chocks and re-air up the system. Since this EP occured on short final with > > the gear extended and 3 green showing. > > Good one, > > Doc > > > > > >> [Original Message] > >> From: Jeff Linebaugh <jefflinebaugh@earthlink.net> > >> To: <yak-list@matronics.com> > >> Date: 12/5/2005 11:04:45 AM > >> Subject: Yak-List: Question of the Week: Loss of air pressure on final > >> > >> --> Yak-List message posted by: Jeff Linebaugh > > <jefflinebaugh@earthlink.net> > >> > >> Most of the points I had in mind have been made on this loss of air > > pressure situation, but here's a couple more to think about: > >> > >> Air pressure on final 20 and dropping...tough for me to decide whether or > > not to go around. The big concern is brakes, of course. If you think you > > have enough to land and stop safely (is there a crosswind?) then press on. > > Personally, I'd rather not have to fumble with the emergency air handle on > > short final, or while trying to keep the airplane on the runway. But if I > > have to.... > >> > >> If you don't have enough air (say it is closer to zero...), and decide to > > go around, there are some considerations: > >> > >> 1) On the go-around, you will want to raise the flap(s)...raising the > > flap handle to up will use air. On the CJ, an option is to go to neutral > > with the flap handle. Slipstream and the bungee will raise the flap > > without > > using air. Not sure if this is the case with the Yaks. > >> > >> 2) As Brian mentioned, moving the handle to neutral will probably stop > > the leak and allow the main air to recharge. It is possible the leak is in > > the gear selector valve itself. In this case, it might be worth trying the > > back gear selector, if you have a back seater. > >> > >> 3) The emergency system will supply air to the brakes and the flaps, in > > addition to the gear. > >> > >> 4) There is a big difference in the CJ and -52 air system in that the > > compressor will charge both the main and emergency air bottles. On the > > -52, the emergency air can only be recharged on the ground. > >> > >> 5) Never hesitate to declare an emergency. I have used the "e" word > > several times, and it has never caused me any trouble with the > > "authorities". On the contrary, controllers are very helpful and most > > truely care about your well-being and will do anything they can to help. > >> > >> > >> > >> Here is one more question for everyone: What if the leak is in a gear > > actuator itself (air blowing by the seal in the actuator)? If you have > > depleted the main air, and turn on the emergency air, would it be possible > > to deplete both air sources? > >> > >> Again, I don't pretend to have all the answers, I'd just like to provoke > > everyone to think about some of the what-ifs... > >> > >> Jeff > >> > >> Jeff Linebaugh > >> jefflinebaugh@earthlink.net > >> http://home.earthlink.net/~jefflinebaugh/ > >> CJ-6P N621CJ > >> Memphis, TN > >> > >> jefflinebaugh@earthlink.net > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >


    Message 18


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    Time: 01:25:47 PM PST US
    From: Bitterlich GS11 Mark G <BitterlichMG@cherrypoint.usmc.mil>
    Subject: EP of the Week
    On the 52 series, the engine pump does not recharge the emergency bottle. On the 50, it does. Mark Bitterlich -----Original Message----- From: A. Dennis Savarese [mailto:dsavarese@elmore.rr.com] Subject: Re: Yak-List: EP of the Week --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese@elmore.rr.com> Although I am not a CJ expert, I think it would be foolish to design an emergency system to blow the gear down in an emergency and not have air to stop the darn thing once you've landed. The Yak's emergency system does both. However, (and I'm sure someone will correct me if I'm wrong), I believe the CJ's compressor does recharge the emergency system. Whereas on the Yak it does not. Dennis ----- Original Message ----- From: "Jon Boede" <jon@email.net> Subject: Re: Yak-List: EP of the Week > --> Yak-List message posted by: "Jon Boede" <jon@email.net> > > Does the emergency air in a CJ interconnect to the main air supply, or > does it ONLY blow the gear down? > > Opening the emergency line wouldn't supply air to the brakes, would it? > > Jon > >> My reply is based on Yak 52's, but may also apply to CJ6's. >> What is a likely cause of the air leak? >> >> The leak is most likely caused by an undercarriage actuator seal leaking. >> If air continues to leak out of the gear handle, don't assume you have a >> bad gear handle. It is most likely a seal leaking in one of the >> undercarriage actuators. >> >> What is the normal air pressure drop when you extend the gear? >> >> Expect about 4, maybe 5 ATM's. flap? Expect about 2, possibly 3 ATM's. >> >> How long would it take to replenish your air supply if you could isolate >> the leak? >> >> Under normal circumstances, it will take 20 minutes (possibly a little >> longer, which is also normal) to replenish the main air tank to 50 ATM if >> the air pressure is at 20 ATM's. >> >> How long would you trouble-shoot an air/gear malfunction? With 20 ATM's >> and on short final, I would not try trouble shooting an air/gear >> malfunction. The gear is already down and locked and therefore no air >> pressure is required to maintain the actuators in the down and locked >> position. The only thing you need air for is to stop the airplane. So >> slow down and land as close to the threshold as practical; roll out and >> use brakes only to make the turn off the runway. Now here is an >> alternative that one might consider. Since the undercarriage is >> indicating DOWN AND LOCKED and we know we don't need air to keep the >> undercarriage in the locked position, one could consider opening the >> emergency air valve while rolling out just to have air pressure to brake >> the airplane. Once again, since the gear is already down and locked, we >> don't have to worry about "blowing" the gear down. Assume for a moment >> that we've accomplished a safe landing and we're rolling out on the >> runway >> and we see the MAIN air pressure continue to drop to now about 10 ATM's. >> Yes, we have a leak, but if we make 50 or so ATM's available for the >> brakes via the emergency system (yes, the emergency air would also leak >> out because it also goes to the actuators), based on the time it took to >> leak down the main system, we would have adequate air to stop the >> airplane >> and turn off the runway. >> >> >> >> . i.e. what is the minimum fuel you would want to land with? >> >> Not applicable to this scenario since we decided to proceed with the >> landing. >> >> >> >> Dennis >> >> >> >> >> ----- Original Message ----- >> From: Jeff Linebaugh >> To: yak-list@matronics. com >> Sent: Thursday, December 01, 2005 9:35 PM >> Subject: Yak-List: EP of the Week >> >> >> Things have been a bit slow lately...so how 'bout this one to >> spice things up? >> >> Question of the Week #2 >> >> >> >> You enter the traffic pattern on a busy Saturday afternoon, and >> report downwind to the tower. Tower responds, "follow the Cessna >> ahead on downwind, you are #3". You put the gear handle down, get >> three green lights, and three visual indicators. You check the >> main air pressure: it is at 32.."hmm, wasn't it just at 40?" >> >> >> >> You follow the Cessna and eventually turn on to an extended base >> leg. Intercepting a normal glidepath, you put the flap down, and >> start down. "oops..now the air is at 22!?" Time to fly the >> airplane; you are now on final and Tower clears you to land. Back >> to the air pressure.. it is now down to 20. What are you going to >> do? >> >> >> >> Some Points to Consider: >> >> You DO always check air pressure on final, don't you??? >> >> What is a likely cause of the air leak? >> >> What is the normal air pressure drop when you extend the gear? >> flap? >> >> How long would it take to replenish your air supply if you could >> isolate the leak? >> >> How long would you trouble-shoot an air/gear malfunction? . >> i.e. >> what is the minimum fuel you would want to land with? >> >> >> >> Some Suggestions for the next time you fly: >> >> As a review during your preflight, spend a few minutes tracing >> your gear retract and extension lines and identify all the >> components of the gear system. >> >> >> >> >> >> >> >> >> >> >> Jeff Linebaugh >> jefflinebaugh@earthlink.net >> http://home.earthlink.net/~jefflinebaugh/ >> CJ-6P N621CJ >> Memphis, TN >> >> >> > > >


    Message 19


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    Time: 02:09:14 PM PST US
    From: Bitterlich GS11 Mark G <BitterlichMG@cherrypoint.usmc.mil>
    Subject: hoses
    Hello Andres, I just got back from a Thanksgiving trip and am getting ready to leave on a Christmas trip, so I am sorry for not writing back sooner and sorry too that I will not be around very long to help you. I am not up to speed on the 55m and am not sure what type of starter system is used. It SOUNDS like you have the same starter arrangement as is used on a Sukhoi... is it like a LEVER that you PUSH to allow air into the starter system, or is it some kind of electrical switch that you push in the cockpit that actuates a REMOTE air valve? Please describe in as much detail as you can how your system works... by that I mean, a description of the parts. Most YAKS use a starter push button... electrical ..... It sends voltage to turn on the shower of sparks AND sends power over to a remote air valve (electrically controlled) that then puts high pressure air up to the starter distributor on the engine itself. The Sukhoi's on the other hand, use a lever... and that lever is actually part of the mechanical valve itself that allows air to go to the starter. On that same lever is an electrical microswitch that puts power to the shower of sparks. Can you tell me what you have? Mark -----Original Message----- From: Dr Andre Katz [mailto:bu131@swbell.net] Subject: Re: Yak-List: hoses --> Yak-List message posted by: Dr Andre Katz <bu131@swbell.net> hello mark: I have written to you in the past, I have a yak 55m the main starter valve is shut, the seals are all gone inside and the small ruber gasket has disintegrated and sent pieces to the air manifold luckily we retrieve them all but I am in need of a starter valve, I have not been able to locate one here in usa, would like to get another as spare, the parts look rather flimsy, if not available is there an alternative I heard swage lok makes a ball valve that may replace that fitting, it is the electromechanic part that sets the shower of sparks at the same time that pressurizes the engine with compressedair thanks andres


    Message 20


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    Time: 02:36:39 PM PST US
    From: Brian Lloyd <brian-yak@lloyd.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: Brian Lloyd <brian-yak@lloyd.com> Roger Doc Kemp wrote: > and touched down at my usual touch down point of ~ 200 ft down the RW, then > I have 3300 feet to coast to a stop. The rest is academic until I tow it to > chocks and re-air up the system. Since this EP occured on short final with > the gear extended and 3 green showing. You are forgetting something: loss of directional control. Without air you have no steering on the ground once your rudder becomes aerodynamically ineffective (below about 30 kts in the CJ6A). Anyone who has had a brake cable break can tell you just how impotent you are going to feel. So your plan to just roll to a stop might not be a good one if there is any crosswind at all. In that case the aircraft will weather vane and drive right off the runway, possibly taking a runway light with it and converting a non-event into an incident or perhaps even an accident should your gear fold up due to an impact. This is the reason I suggested popping the emergency bottle on short final. Given the rate of air pressure loss in the scenario that should give you sufficient pressure for the duration needed to brake the aircraft to a stop. One thing that might be considered is the availability of of a big runway somewhere nearby. Here in Sacramento we have both Mather and McClellan, ex Air Force bases with long, wide runways. If you know you have no air, find a runway aligned as closely as possible with the wind and land on the downwind side. As the aircraft slows it will weather vane into the wind but a 150' wide runway will still allow you to coast to a stop without going off the runway. -- Brian Lloyd 2243 Cattle Dr. brian-yak at lloyd dot com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . - Antoine de Saint-Exupery


    Message 21


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    Time: 02:49:14 PM PST US
    From: "Frank Haertlein" <yak52driver@earthlink.net>
    Subject: Aluminum control surfaces
    Robert, leave the fabric on the surfaces if it's modern Ceconite. If they're cotton surfaces replace them with Stits or it's equivalent. Don't go aluminum surfaces....people have nothing but problems with them when they convert to aluminum. Frank N9110M YAK-52 K32 -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Robert Schwartz Subject: Yak-List: Gentlemen: I am a recent YAK 52 owner and I have a question. Is there an advantage to recovering the control surfaces in aluminum, rather than replacing the fabric? I have been told that the fabric provides a better platform for aerobatics with a lighter stick and quicker handling. What about aluminum, better cruise speed? is there an advantage to the Yak 52M larger rudder? thanks and I will look forward to the answers from this knowledgeable group ROBERT E. SCHWARTZ Email: schwartzcompany@worldnet.att.net


    Message 22


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    Time: 03:09:12 PM PST US
    From: "Jerome van der Schaar" <jvds30@hotmail.com>
    Subject: In memorial
    Ray Hanna 28 August 1928 - 1 December 2005 It was with great sadness that we announce the death of Ray Hanna. Ray, who was 77 years, joined the Royal Air Force in 1949 having learned to fly in New Zealand in 1947/48. Following training on the Prentice, Harvard and Meteor he was fortunate enough to fly such piston types as the Tempest V Sea Fury, Balliol and Beaufighter. His first operational posting was to 79 Squadron, 2ATAF flying FR9 Meteors. In the fifties, he flew nearly all the early British jets including Vampires Venoms, Attackers, Sea Hawks, Swifts and Javelins. Ray first led a team of four Hunters in 1957, in 1963/64 was a member of the College of Air Warfare Meteor Team and was selected for the newly-formed Red Arrows as No 3 in 1965. To the best of my knowledge, he remains the longest serving Leader in the history of the team. Ray's leadership is widely regarded as making the Arrows the world-renowned aerobatics team they ultimately became and, in recognition of his contribution, he was received a bar to the AFC he had previously been awarded for several feats of airmanship. Ray retired from the RAF in 1971 for a new career in civil aviation, initially on the Boeing 707 with Lloyd International Airways followed by seven years with Cathay Pacific, again with the 707, and for two years the Lockheed L-1011 Tri-Star. In 1979 he was asked to head a private diplomatic 707 company with world-wide operations. With his son Mark, who was so tragically killed flying an Me109 six years ago, he built up a vintage warbird collection at Duxford which ultimately became the renowned 'Old Flying Machine Company.' In addition to achieving acclaim on the display circuit, the OFMC has numerous movie credits. Ray was undoubtedly one of the finest display pilots ever, and regarded by many as the best of the best. Ray displaying his famous Mark IX Spitfire MH434 was a joy to behold, and a sight which will be sorely missed on the display circuit. Far more important, he was a fine man.


    Message 23


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    Time: 03:11:42 PM PST US
    From: Brian Lloyd <brian-yak@lloyd.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: Brian Lloyd <brian-yak@lloyd.com> One more thing, you still need to make the "flaps vs. no-flaps" decision. Given that split flaps have negligible effect on stall speed, your touch-down speed and landing roll will be approximately the same regardless of flap position. If you are worried about air, just leave the flaps up and save the air for the brakes. -- Brian Lloyd 2243 Cattle Dr. brian-yak at lloyd dot com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . - Antoine de Saint-Exupery


    Message 24


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    Time: 04:12:46 PM PST US
    From: "Doug Sapp" <rvfltd@televar.com>
    Subject: In memorial
    This to me from friends in NZ. Always Yakin, Doug Sapp -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of Jerome van der Schaar Subject: Yak-List: In memorial Ray Hanna 28 August 1928 - 1 December 2005 It was with great sadness that we announce the death of Ray Hanna. Ray, who was 77 years, joined the Royal Air Force in 1949 having learned to fly in New Zealand in 1947/48. Following training on the Prentice, Harvard and Meteor he was fortunate enough to fly such piston types as the Tempest V, Sea Fury, Balliol and Beaufighter. His first operational posting was to 79 Squadron, 2ATAF flying FR9 Meteors. In the fifties, he flew nearly all the early British jets including Vampires, Venoms, Attackers, Sea Hawks, Swifts and Javelins. Ray first led a team of four Hunters in 1957, in 1963/64 was a member of the College of Air Warfare Meteor Team and was selected for the newly-formed Red Arrows as No 3 in 1965. To the best of my knowledge, he remains the longest serving Leader in the history of the team. Ray's leadership is widely regarded as making the Arrows the world-renowned aerobatics team they ultimately became and, in recognition of his contribution, he was received a bar to the AFC he had previously been awarded for several feats of airmanship. Ray retired from the RAF in 1971 for a new career in civil aviation, initially on the Boeing 707 with Lloyd International Airways followed by seven years with Cathay Pacific, again with the 707, and for two years the Lockheed L-1011 Tri-Star. In 1979 he was asked to head a private diplomatic 707 company with world-wide operations. With his son Mark, who was so tragically killed flying an Me109 six years ago, he built up a vintage warbird collection at Duxford which ultimately became the renowned 'Old Flying Machine Company.' In addition to achieving acclaim on the display circuit, the OFMC has numerous movie credits. Ray was undoubtedly one of the finest display pilots ever, and regarded by many as the best of the best. Ray displaying his famous Mark IX Spitfire MH434 was a joy to behold, and a sight which will be sorely missed on the display circuit. Far more important, he was a fine man.


    Message 25


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    Time: 04:35:15 PM PST US
    From: "Craig Payne" <cpayne@joimail.com>
    Subject: Re: In memorial
    Ray Hanna was truly a great; even us Yanks knew of him and his beloved Spit. Right now I'm headed for my Toby mug to prepare a toast of Bitters. Hear hear! Craig Payne


    Message 26


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    Time: 04:43:47 PM PST US
    From: "Roger Kemp" <viperdoc@mindspring.com>
    Subject: In memorial
    Gentlemen and women, With your evening drink, face west and give a toast to the passing of a great aviator. Tail winds forever, Doc ----- Original Message ----- From: Jerome van der Schaar Subject: Yak-List: In memorial Ray Hanna 28 August 1928 - 1 December 2005 It was with great sadness that we announce the death of Ray Hanna. Ray, who was 77 years, joined the Royal Air Force in 1949 having learned to fly in New Zealand in 1947/48. Following training on the Prentice, Harvard and Meteor he was fortunate enough to fly such piston types as the Tempest V, Sea Fury, Balliol and Beaufighter. His first operational posting was to 79 Squadron, 2ATAF flying FR9 Meteors. In the fifties, he flew nearly all the early British jets including Vampires, Venoms, Attackers, Sea Hawks, Swifts and Javelins. Ray first led a team of four Hunters in 1957, in 1963/64 was a member of the College of Air Warfare Meteor Team and was selected for the newly-formed Red Arrows as No 3 in 1965. To the best of my knowledge, he remains the longest serving Leader in the history of the team. Ray's leadership is widely regarded as making the Arrows the world-renowned aerobatics team they ultimately became and, in recognition of his contribution, he was received a bar to the AFC he had previously been awarded for several feats of airmanship. Ray retired from the RAF in 1971 for a new career in civil aviation, initially on the Boeing 707 with Lloyd International Airways followed by seven years with Cathay Pacific, again with the 707, and for two years the Lockheed L-1011 Tri-Star. In 1979 he was asked to head a private diplomatic 707 company with world-wide operations. With his son Mark, who was so tragically killed flying an Me109 six years ago, he built up a vintage warbird collection at Duxford which ultimately became the renowned 'Old Flying Machine Company.' In addition to achieving acclaim on the display circuit, the OFMC has numerous movie credits. Ray was undoubtedly one of the finest display pilots ever, and regarded by many as the best of the best. Ray displaying his famous Mark IX Spitfire MH434 was a joy to behold, and a sight which will be sorely missed on the display circuit. Far more important, he was a fine man.


    Message 27


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    Time: 05:00:17 PM PST US
    From: "Roger Kemp" <viperdoc@mindspring.com>
    Subject: Re: Question of the Week: Loss of air pressure on final
    --> Yak-List message posted by: "Roger Kemp" <viperdoc@mindspring.com> Been down that road 3 times already! The YAK has good directional control down to ~ 20-25 mph. With impending departure into the over-run, switch to the lost of braking EP. Shut the motor off and stear straight ahead trying to split the end of runway lights! At my home drome, the grass over-run of 27 is 500 feet long and the departure end of 09 is 300 feet long. My Yak stopped with in 50 feet on the grass. That was what I was thinking about when I wrote what I wrote (that I have a nice level infield and long grass over-runs at the home drome). Maybe we should just add tial hooks to our birds and Bak 12's to our repective airdromes to solve this problem. But then you would have to remember to slow your taxi speed down to keep from slapping your centerline tank for those that have centerline tanks installed. Oh, Sorry we're talking Vipers now. Doc > [Original Message] > From: Brian Lloyd <brian-yak@lloyd.com> > To: <yak-list@matronics.com> > Date: 12/5/2005 4:36:21 PM > Subject: Re: Yak-List: Question of the Week: Loss of air pressure on final > > --> Yak-List message posted by: Brian Lloyd <brian-yak@lloyd.com> > > Roger Doc Kemp wrote: > > > and touched down at my usual touch down point of ~ 200 ft down the RW, then > > I have 3300 feet to coast to a stop. The rest is academic until I tow it to > > chocks and re-air up the system. Since this EP occured on short final with > > the gear extended and 3 green showing. > > You are forgetting something: loss of directional control. Without air > you have no steering on the ground once your rudder becomes > aerodynamically ineffective (below about 30 kts in the CJ6A). Anyone who > has had a brake cable break can tell you just how impotent you are going > to feel. So your plan to just roll to a stop might not be a good one if > there is any crosswind at all. In that case the aircraft will weather > vane and drive right off the runway, possibly taking a runway light with > it and converting a non-event into an incident or perhaps even an > accident should your gear fold up due to an impact. > > This is the reason I suggested popping the emergency bottle on short > final. Given the rate of air pressure loss in the scenario that should > give you sufficient pressure for the duration needed to brake the > aircraft to a stop. > > One thing that might be considered is the availability of of a big > runway somewhere nearby. Here in Sacramento we have both Mather and > McClellan, ex Air Force bases with long, wide runways. If you know you > have no air, find a runway aligned as closely as possible with the wind > and land on the downwind side. As the aircraft slows it will weather > vane into the wind but a 150' wide runway will still allow you to coast > to a stop without going off the runway. > > -- > Brian Lloyd 2243 Cattle Dr. > brian-yak at lloyd dot com Folsom, CA 95630 > +1.916.367.2131 (voice) +1.270.912.0788 (fax) > > I fly because it releases my mind from the tyranny of petty things . . . > - Antoine de Saint-Exupery > > > > > > >




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