R22 Engine RPM above rotor RPM?
Has anyone ever heard of an R22 engine overspeed that was between 110 & 116%, but left the rotor below 110% (split needles)? Can belts normally slip like that with a sudden increase in throttle/torque or
A> There is an issue with the belt tension settings
B> The flight crew's perception/interpretation of the tachs was incorrect
C> Something else?
If it was A> is there anything you could detect on a preflight or on engine run-up (blades taking more than 5 seconds to turn etc?)
Regards