The grounding of all Osprey tilt-rotors follows a fatal crash off the coast of a Japanese island that may be tied to a “materiel failure.”The U.S. Air Force, Navy, and Marine Corps have all now grounded their respective V-22 Osprey tilt-rotor fleets. This follows a fatal crash involving an Air Force CV-22B off the coast of Japan's Yakushima Island on November 29. An investigation into the accident is still ongoing, but has found evidence already that a "materiel failure" may have been the root cause.The CV-22B, which was using the callsign Gundam 22 at the time, was conducting a routine...
