Carl Chebi, the head of Naval Air Systems Command, which runs the Osprey program ... flying the aircraft three decades ago, 64 personnel have been killed and 93 injured in crashes.

Using flight tracking data, CCTV and recordings of air traffic control, Sky News' Data and Forensics Unit examines the events that led to the disaster, which is thought to have killed 67 people.

Roughly a year ago, the military’s fleet of V-22 Osprey aircraft was grounded following a deadly Air Force Special Operations crash off the coast of Japan. The CV-22 Osprey crash, which occurred ...