Originally Posted by
Agile
it is possible to take an R44 governor off, let the RRPM decay to about 40% and go to max manifold pressure while keeping the same RRPM, it will fly of the ground and hover (if you are not too heavy).
With the main RRPM low both advancing and more importantly the retreating AOA will be very close to stall. When that takes place ALL control will be lost and normally not recoverable. This maybe possible to demonstrate very close to the ground and may be survivable, but above a couple of feet loss would be catastrophic. People forget that all cyclic control comes from directing the rotor thrust and with stall thrust falls rapidly and gravity wins. In addition directional control will be lost because the tail rotor power will be vastly reduced with reduced main rotor speed. The whole point of minimum rpm inflight is to retain thrust control with sufficient control response.
Flying deliberately outside that parameter is completely irresponsible and should result in forfeiture of you license.