Commander-List Digest Archive

Tue 04/25/06


Total Messages Posted: 5



Today's Message Index:
----------------------
 
     1. 03:54 AM - Re: Near miss, Vancouver (Steven)
     2. 05:40 AM - Main Gear Clevis Failure (steve2)
     3. 07:51 AM - Aero Commander 680 FL Aircraft USED Engine IGSO-540-BIA LYCOMING ENGINE & HART (BertBerry1@aol.com)
     4. 09:12 AM - Re: Main Gear Clevis Failure (YOURTCFG@aol.com)
     5. 09:21 AM - Re: Main Gear Clevis Failure (mike floyd)
 
 
 


Message 1


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    Time: 03:54:46 AM PST US
    From: "Steven" <steve2@sover.net>
    Subject: Re: Near miss, Vancouver
    --> Commander-List message posted by: "Steven" <steve2@sover.net> We added last year a Garmin 480/MX20 combo with the Mode S transponder. We got the TIS-B traffic system because with the aerial survey we do even in VFR conditions there is a lot of heads-down time. It's like flying an approach all day. The TIS-B is pretty neat. The only problem is once in a while there is pop up traffic so close there's almost no time to do anything about it. The box warns "Traffic" and scares you silly. Hell, if it's that close maybe it would be better not to know. (Joking aside, that usual is happening when someone is closing to within less than a mile but at a different enough altitude for you to not have seen them visually. It gets you going though.) Steve ----- Original Message ----- From: "Tom Fisher" <tfisher@commandergroup.bc.ca> Sent: Tuesday, April 18, 2006 2:29 PM Subject: Commander-List: Near miss, Vancouver > --> Commander-List message posted by: "Tom Fisher" > <tfisher@commandergroup.bc.ca> > > This is the second attempt to send this because the previous Email was > rejected as I had "cheap life insurance" in the subject line. > ************************************************ > > Happy to see the sunrise again. > > Since I obtained my abused 680FLP I have been bringing it up to spec. and > was out on a test flight with an engineer setting up the rigging on all > the controls. > The wx. was 3000 overcast with rain showers, we were doing a VOR hold at > 2500 feet during which we were being feed traffic information of VFR > training aircraft below and around us being controlled by another agency > for that altitude. > On our last inbound leg, clipping along at 190 with 75% power, the > engineer had just finished recording all that had to be recorded. > I advised the controlling agency (radar) that we were ready to return for > landing. As I was waiting for the clearance I had my eyes inside to > adjust the EGT's (the engineer wanted full rich for the tests) before I > got the needles where I wanted them I heard the transmission "traffic".... > as soon as the word "traffic" was processed by my brain I looked up and > before "12 O'clock" was heard I saw a single-engine Cessna in a steep > climbing left turn about 50 feet below me and maybe 1000' in front of me > going right to left. I yarded up and to the right on the yoke, yes we > missed him, but not by much, I'm sure had we not done the avoidance > maneuver we would have clipped him. I'm sure the Cessna never saw us. > Radar apologized profusely siting transponder recognition issues with > adjacent controlling agencies. > > I since have tested a "PCAS" Portable Collision Avoidance System that is > the size of a deck of cards. There are a couple of models of this type > out there and it seems to work quite well, this one for under $500. I am > getting one; I am also going to try a get funding to supply one for each > of our search aircraft. > Cheap life insurance. > > Tom F. > C-GISS 680FLP (Mr.RPM) > > >


    Message 2


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    Time: 05:40:03 AM PST US
    From: "steve2" <steve2@sover.net>
    Subject: Main Gear Clevis Failure
    --> Commander-List message posted by: "steve2" <steve2@sover.net> We had an interesting failure the other day I thought I might pass along to the group. The main gear retract cylinders are attached to the the gear by two clevises (clevi?) each. They look a like a fork. The pieces look robust enough (and obviously well suited to the task since they've lasted 45 years.) The fork portion of the clevis is attached to a tube which is secured into the gear by a bolt and barrel nut. The 'tube' is not a solid bar. One clevis broke the other day while putting the gear down, leaving a retract cylinder just hanging. It appears that the failure was a long time coming as there was evidence of old damage to the broken piece. (Aircraft had to be slowed to allow the one cylinder do the job.) We all scratched our heads wondering if anything any of us ever did contributed to the failure. The old-timer here even thought back to the time that the gear didn't rotate upon retraction. Maybe its overkill but I'm always careful to try to lower the gear when I can grab some smooth air. It might not be a bad idea to make pulling these clevis every so often part of your inspection. This summer after our season ends we were going to take the gear apart, but this clevis beat us to it. They are pretty easy to drop and a little wooden wedge jamming the barrel nut in place will save some grief reinstalling. Our new part arrived with different geometry and a different hole size for the bolt securing the cylinder end to the clevis. We're a 500A converted to a B in 64(?) so this might have something to do with it, but be aware it might not be plug-and-play if you swap any out. Steve


    Message 3


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    Time: 07:51:19 AM PST US
    From: BertBerry1@aol.com
    Subject: Aero Commander 680 FL Aircraft USED Engine IGSO-540-BIA
    LYCOMING ENGINE & HART --> Commander-List message posted by: BertBerry1@aol.com Hey Guys, Not sure if this interest anyone, but, I saw this on Ebay this morning. http://cgi.ebay.com/ebaymotors/Aero-Commander-680-FL-Aircraft-USED-Engine_W0QQ cmdZViewItemQQcategoryZ50453QQitemZ8059908973QQrdZ1 Bert


    Message 4


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    Time: 09:12:20 AM PST US
    From: YOURTCFG@aol.com
    Subject: Re: Main Gear Clevis Failure
    --> Commander-List message posted by: YOURTCFG@aol.com In a message dated 4/25/2006 5:41:16 A.M. Pacific Standard Time, steve2@sover.net writes: It might not be a bad idea to make pulling these clevis every so often part of your inspection. This is a fairly common failure. It may be caused by the cylinder not being properly rigged. Carefully follow the Commander service instructions for rigging the gear. The TCFG recommends that these forks be replace at about 1000hr, more frequently if the airplane is used on short flights. Some operators remove and magniflux these part periodically, but replacement makes good sense. jb


    Message 5


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    Time: 09:21:13 AM PST US
    From: "mike floyd" <floydgm@hotmail.com>
    Subject: RE: Main Gear Clevis Failure
    --> Commander-List message posted by: "mike floyd" <floydgm@hotmail.com> I have seen more than one failure of the clevis. If the mount holes are a different size you probably have the clevis for the main cylinder. You also want to look at the others and maybe get them magnafluxed. Mike Commander NW




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