---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 06/13/09: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:14 AM - IFR Certification () 2. 10:29 AM - Re: Burning up Vans Engine Gauges - Part Two. (rampil) 3. 11:55 AM - Re: Help with LCD Circuit Design - Altitude & Heading (John McMahon) ________________________________ Message 1 _____________________________________ Time: 05:14:25 AM PST US From: Subject: AeroElectric-List: IFR Certification 6/13/2009 Hello Ira, You wrote: "If the boss at your local shop does not understand the regulations pertaining to OBAM aircraft, find another shop." I agree that finding another shop is the best way to resolve this situation. However outright condemnation of the boss for "not understand(ing) the regulations pertaining to OBAM aircraft" is not warranted. 1) The issue is not OBAM (amateur built experimental aircraft) versus standard type certificated aircraft. 2) 14 CFR 91.217 applies equally to both of those kinds of aircraft. 3) The fundamental issue relates to TSO'd versus non TSO'd altitude encoders. 4) Note that 91.217 applies to flight under VFR as well as flight under IFR. 5) Headquarters FAA is in agreement with the boss's position of not approving a non TSO'd altitude encoder unless the tests required by 14 CFR paragraph 91.217 (b) have been accomplished. 6) FAA Headquaters says that the tests required by 91.217 (b) are far more complex and demanding than the tests required by 91.411 and the associated appendicies of 14 CFR part 43. 7) Some people dispute FAA Headquarters position on this issue, but no one to date has adequately challenged them to change their position. 8) My current recommendations on this issue are: A) Understand the issues. (Hence this posting to you and fellow builders). B) Let sleeping dogs lie because if FAA Headquarers really tried to enforce their position it would cause chaos in the amateur built community because of the large number of non TSO'd altitude encoders already flying, being built into aircraft, and being manufactured. Please let me know if you have any questions. Thanks. 'OC' Says: "The best investment we can make is the effort to gather and understand knowledge." ============================================= Time: 07:41:50 AM PST US Subject: AeroElectric-List: Re: IFR Certification From: "rampil" My BMA system has served as my encoder for my Mode C for 5 years in the NYC area. Islip Avionics had absolutely no issue with the certifications. If the boss at your local shop does not understand the regulations pertaining to OBAM aircraft, find another shop. Especially, since they would, if they finally elect to do the work, would take twice as long and charge twice as much! -------- Ira N224XS ________________________________ Message 2 _____________________________________ Time: 10:29:23 AM PST US Subject: AeroElectric-List: Re: Burning up Vans Engine Gauges - Part Two. From: "rampil" The description you provided sounds like what would occur when a much higher than spec'ed voltage was applied to your engine instruments, not thousands of volts but hundreds (at extreme voltages most resistors would vaporize) and long enough for some heat to be transmitted to the plastic case. This does not sound like a ground problem since a poor ground would REDUCE the current through the resistor. Are these gauges lit? Is the light still ok? is it drive from the same bus or through some type of dimmer? Ira -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=247959#247959 ________________________________ Message 3 _____________________________________ Time: 11:55:26 AM PST US Subject: Re: AeroElectric-List: Help with LCD Circuit Design - Altitude & Heading From: John McMahon along those lines, cheap, simple, but unlighted- *Sort By* * Relevance* *Price:* [Low-High] [High-Low] *Alphabetical:* [A-Z] [Z-A] *10 result(s) for reminder* Altitude Reminder This extremely simple but effective altitude reminder is great insurance against pilot error. Better than writing altitudes=97safer than trusting y..... 7035A - $11.95 http://sportys.com/acb/showdetl.cfm?&did=19&product_id=1175 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.