Keith Williams is absolutely right....
Power formula for the PT6-A42 (KingAir B200)
SHP = torque X RPM X k
850 shp = 2230 ft/lbs X 2000 RPM X 0.00019058
20 rev less will mean 10 SHP less, 100 revs will cost 42 SHP
300 less (cruise for the B200) and you get 128 SHP less output.
Ask your local checker to try it on your next checkride:
If you do stall recovery with props, say in cruise pitch,instead of high rpm, youŽll need much longer to fly out of it.
(One of the mistakes one sees very often during checkrides is the forgotten prop lever on the working engine. )