I was flying my Flash on its sixth flight last week. Tx was a JR PCM9 and RX JR10DS fed through a sensor switch to twin Li-Po's. Flying straight and level at 400 yd range the model suddenly pitched up recovered to level , and while I was thinking what the hell was that, it pitched hard down. Engine appeared to go to idle or off and I had no control over the model which was completely destroyed. Fail safe was set to engine off and controls to last position. I have now lost three expensive models in three months at this same flying site to radio issues, and in two cases the model pitched down.
Needless to say I am not flying there again.

John