A CV-22 Osprey crash last year off the coast of Japan is linked to a severe failure of one of the aircraft's gearboxes as the crew was preparing for an emergency landing, killing the eight airmen on board, according to an Air Force investigation released Aug. 1 . The tiltrotor aircraft is unique because it can take off like a helicopter but fly like an airplane, with two proprotor gearboxes being located in each rotating engine. During the Nov. 29...
