ORIGINAL: daven
Did you fly a different plane with the same transmitter prior to the problem?
I know if I switch between a PPM model and a PCM model, you have to turn the radio off and then back on to get it into PCM.
Not saying this is the problem, just curious.
Dave, my problems were really my problem. On one ocasion, I was playing with air breaks and set up a model 4*60 AB vs my standard 4*60. If forgot to switch back to the "good" model and when I saw 4*60 on the screen, I quit reading. What a flight. I got it back down and in one piece, but it took me an hour to get calmed down to fly again.
I've never had a shift in trim or any other issue with the 9C that I couldn't atribuite to something dumb I did. Great radio.
Don