WASHINGTON, Feb 7, (AP): The Pentagon believes it has identified the mechanical failure that led to a fatal crash of an Osprey aircraft in Japan and the grounding of the fleet for two months, a US defense official told The Associated Press. It is now weighing how the aircraft can be returned to service.
The Pentagon’s Joint Safety Council is now working with the Air Force, Navy and Marine Corps on their plans to get Osprey crews ready to fly again, said Navy Rear Adm Chris Engdahl, chairman of the council and commander of Naval Safety Command.
The Air Force investigation is continuing into the Nov 29 Air Force special operations command CV-22 crash, which killed eight service members. The crash led to a rare grounding on Dec 6 of about 400 Osprey aircraft across the three services. Japan also grounded its fleet of 14 Ospreys following the crash.
The official who said the mechanical failure had been identified declined to say what the failure was. It has opened the door to discussions on return to flight because mitigations can be put in place. The official was not authorized to discuss the investigation publicly and spoke on condition of anonymity.
While each service will determine when it returns its own fleets to the skies, the council is talking with "commanders across the services on what are their plans to come back to flight, what are their risk decisions,” Engdahl said. "In aviation, they’ve done this before, but probably not on this broad scale with a platform like we have in the V-22” Osprey.
That could include getting service-wide input on how many simulator hours are needed to get a crew back to proficiency, with what type of flying, and what maintenance is needed on each Osprey before they go up in the air again, Engdahl said.
Flight safety is dependent on pilots maintaining currency on an aircraft - meaning that they are flying regularly enough to be proficient in all types of flying, such as night missions, close formation flying or refueling. After 60 days of being grounded, that will be one of the key issues the services must prepare for as the Ospreys return to flight.
They also must make sure the aircraft are ready. Both the Air Force and Marine Corps have been running the Osprey's engines; the Marines have been conducting ground movements to keep the aircraft working.