The V-22 Osprey tilt-rotor aircraft flies near near an airbase in Kanagawa.
Damon Coulter/SOPA Images/LightRocket via Getty Images
- Gearbox failures and crew errors caused the deadly V-22 crash off Japan in November, a probe found.
- The deadliest CV-22 incident in Air Force history, the crash led to a fleet grounding of the Osprey.
- The Air Force has since updated protocols to advise immediate landing after gearbox warnings.
The deadly crash of an CV-22B Osprey...