The reason the noise limit was dropped by the BMFA was because it was found turbines tested under the piston engine rules will ALL fail. It was though noted that turbines were significantly quieter in the air, they also produced a less monotonous annoying sound so, the noise rule was dropped to allow them to be used.

Having said all that we need to be careful because the recent new breed of more powerful engines are by their nature noisier. So personally I recommend a little prudent throttle control whilst flying, to help divert attention away from "the noise". Obviously a model will be noisier when being flown away than coming towards yourself. Therefore I consider the future of turbine flying to be in the hands of the pilots.

m