I just go to an Avionics Shop and ask for a VFR transponder check. They know what to do. All testing is done in the ground. I have never bothered the tech with questions, but I have the impression he simulates various altitudes using some kind of metered (with an altimeter) vacuum pump and then reads and checks the altitude the transponder is transmitting. Last time I paid $ 125. Hope this helps. Eliacim
----- Original Message ----- From: [EMAIL PROTECTED] To: [email protected] Sent: Wednesday, April 16, 2008 8:37 PM Subject: [ercoupe-tech] VFR Transponder & Encoder Checks Folks, What is required for certifications on transponders and encoders for a VFR-only aircraft? I know the transponder has to be checked every two years. Do the regs say that the encoder has to be checked at several altitudes? Only if flown in certain airspace? If so, which reg is it? Somebody is telling me that the encoder does not have to be checked for correct altitude readout if the airplane is not flown IFR. I find that hard to believe. Thanks, Wayne DelRossi Alon Aircoupe N5618F "Nobody has ever scientifically proven that life is supposed to be serious." ------------------------------------------------------------------------------ Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos.
