Hi Dan and Andy,I would like to be more specific about my crash.It was not caused by an engine failure or by a mechanical problem.The real cause was the receiver antenna.After refuelling I lifted the Unit and my feet was on the antenna broking it inside the cabin.This caused a Range problem. I fixed the Helicopter three weeks ago and I installed a 2.4 GHZ radio.Now I am back in the air it flies like a new one without any interference and I still love it.Thanks a lot to you Dan and andy for your help and support. Claude