Just checked on a third model (the SE5a) and yes indeed the ailerons go to maximum deflection and then cease functioning. In flight this would guarantee destruction. The first step is to record all the current settings for all my models (and transfer them to a still working RDS8000 as back-up). At that point, I may open up the broken Tx and see what's up.

Here's a link to the RCU thread describing the last failure (in 2013). The photos show the broken wire on the aileron gimbal and the description sounds identical. Yeah, I think it's time to say good-bye to Airtronics. It was a good radio to learn on but now that my models are more serious, I need a more serious (and more dependable) radio.

http://www.rcuniverse.com/forum/airt...e-failure.html