Originally Posted by gunradd

Well Mike if you question your radio equipment then I would try and either get telemetry and find someone that can lend something to check it. I doubt its the radio system also since your turbine is not going to fail safe then its really unlikely its your radio system. Also do you have the fail safe set and if so is it set to fly straight?

I would say its your conditions and might be an updraft in that area of the field.