Originally Posted by
The Sultan
Nige: The 525 accident occurred when the ship was well above Vne and the pilot failed to take action to correct rotor rpm droop within the planned response time after simulated engine loss. No traditional helicopter can survive flight above Vne with the rotor rpm decayed to 60% of normal operating rpm.
If that is so, why has the airframe certification been delayed so much? It seems a pretty extended delay for what you describe as a clear cut pilot error.