Originally Posted by
Gordy
As for low PM--the R-22 will still maintain directional control in the hover at 70% RPM---it was a demonstration we did with all student pilots. People tend to frak out these days with low RPM---I think over the years there has been a scare tactic. Same with Low G----that used to be allowed and was a required maneuver for the CFI check ride.
Well, they do tell us that "Catastrophic rotor stall could occur if the rotor rpm ever drops below 80% plus 1% per 1,000 feet of altitude"...so, yeah, I'd probably frak out if it got near 70!