I have an E- flite Air tractor electric , plug n play : my receiver- no AS3X. I have had the plane [ in flight ] suddenly surge full speed without my touching the throttle gimble ...on three successive flights. Last week while we doing a range test , the motor suddenly surged full speed while I was carrying it. My assistant yelled that he did not touch the throttle gimble. Is this a brownout, faulty BESC, We re binded the receiver before the range test . All channels were functioning. HELP.