US Military V-22 Osprey Aircraft Fly Again After 3-Month Grounding, Marines Unveil "ReVamp" Plan

The US Marine Corps, Navy, and Air Force are all flying and deploying their V-22 Ospreys again, after the Pentagon’s monthslong grounding was lifted in March. V-22 Osprey is a tiltrotor aircraft - it generates lift and propulsion by way of one or more powered rotors mounted on rotating shafts. “We’re back to flying. We got all services back in the sky,” Marine Col. Brian Taylor, the V-22 program manager, said on April 30.
Each US military service has its own plan to get its tiltrotor aircraft flying again after the three-month grounding. All V-22s halted operations in December after a “material failure” caused a CV-22 crash off the coast of Japan, killing eight airmen.
The US military is the only one flying a tiltrotor because it’s a complicated plane with a complicated drive system.