Running engines and running tail rotor must in principle not be a proof that the Epicyclic modules suffered no self-destruction
Is it is possible that if the MGB epicyclic module seizes the connection to the engines is lost and the resulting inertia is to small to stop the engine from shutting down due to overspeed ? And, wise versa, if MGB still intact the inertia is big enough to allow the ECUs to limit power before overspeed rpm is reached ? Just a thought, to try to understand AH...