ORIGINAL: arniebud

I have been going thru the very same thing. I have lost 4 aircraft, some with just death spiral nose in, and 2 with out of control, see you later, off in the horizon till they crashed in the far woods. I finally came to the conclusion that the culprit was the only common part in each event, and that is the transmitter. I sent it off to Futaba, and they found that there was an intermittant disconnect in the battery to transmitter wire causing loss of signal to the plane.