Thanks guys for replys,
Toymaker,
different crystals on each crash.

Of course, I don't know whether the Transmitter is at fault, except to say I use on all my other sport planes, on PPM.

klhoard
We are on 36 mhz here. But the new spectrums are on their way. I have used a 649 pcm in my spark ignition plane with no probs,... so not sure about interference at our field. Too many guys fly there without problems.

So, if I ever get motivated to build another pattership, it will have a PPM receiver.

There was ABSOLUTELY no warning. working perfectly, then into fail safe.
Ground range test, with the engine running, was well over 85 large paces.

The only thing I have thought of, this receiver has only ever been in these two patternships (apart from the trainer test). It's possible it was always faulty. I bet I won't get any satisfaction from the local importer though.

I would have rather seen the glitching, if there was a real problem. I might have seen it and been able to find out what the problem was. With just being locked out on PCM, I got no warrning, just a lovely pile of bits and a severely damaged engine.

I really am wondering what the good of PCM is?
Surely to see a glitch is better than to just go into failsafe and crash!!!!!.