Can anyone confirm that we are to not practice single engine work at flight levels (i.e. 25K, etc.) because I was told that when you retard the prop to right at feather and then bring the prop lever back up to cruise setting (1700 RPM) that the governor can not engage quickly in the thin air and a prop overspeed situation can develop.
Having done recurrents on SA227 and be 1900 in the actual aircraft,i never went higher than 10 000 ft.
Steep turns ,approach to stall were all done around 7-8000 feet,rest of training circuit altitude.
Why go at 25 000 ft to do such exercise?is it because your aircraft is limited to 25 000 due to oxygen mask not being quick donning type and your boss wants to demonstrate the aircraft handling at max sop altitude?
If so, i think it is unnecessary risks.
The higher the altitude,the smoother the inputs the better
