On Wednesday, April 8, 2015 at 7:27:06 PM UTC-5, Bob Pasker wrote:

did the transponder in that plane display pressure altitude, like my KTX-76? if so, did it show the wrong altitude? the right altitude? and when you realized what happened, did you call approach or center and ask for an altimeter readout?

Bob, it's an older Mode A/C transponder that doesn't show the pressure altitude it is transmitting. After we cycled it off and on a couple of times, my PCAS started to show the correct altitude, so we assumed that we had "fixed" whatever the problem was. Owners of the RV-6 are now shopping for a new xponder, by the way, and have already bought a PCAS device very similar to my out-of-production MRX.

Kirk
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