On Monday, April 6, 2015 at 7:19:19 PM UTC-4, kirk.stant wrote:
Now, what we figured happened is: 1. Our transponder was stuck putting out a bad altitude (2400ft) instead of the actual pressure alt (about 9400ft)

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?

http://www.bendixking.com/Products/N...ponders/KT-76C