[stackj]

I just had my rear engine overhauled this summer. At completion of the overhaul and after the first flight the mechanic went through the fuel system setup procedure. He ran the engine long enough on the ground on a 95 plus degree day to overheat it, causing low oil pressure. The prop went into feather.

He used paddles to reset the prop blades (McCauley says not to, but I don't know how else you'd go about it.) Everything ran and worked OK afterwards.

The point is that low oil pressure will cause the prop to feather if the RPM is high enough that the stops don't engage.

Make sure your engine is properly baffled and is getting adequate airflow.