Originally Posted by
Uplinker
........Presumably the Osprey has cross-over driveshafts to keep both rotors turning if an engine fails? (Would not have helped here of course, as it sounds as if a rotor gearbox broke up)......
It does have have an emergency crossover drive-shaft. During the early program loss at Quantico the cross drive shaft was compromised by fire, and as you state likely irrelevant with a gear box/prop-rotor compromise.