HX-21 completes testing of MV-22’s new attitude mode at sea

HX-21 went out to sea with its MV-22 on board USS Wasp in May to test a new flight control capability at sea.

A U.S. Marine Corps MV-22 Osprey with Air test and Evaluation Squadron (HX) 21 takes off of the flight deck of the Aviation Logistics Support Ship (T-AVB3) S.S. Wright, Nov. 10, 2017. HX-21 assisted the Wright in acquiring their Aviation Facilities Certification to prove shipboard compatibility with MV-22 Ospreys. (U.S. Marine Corps photo by Lance Cpl. Cody J. Ohira)


The new attitude mode allows the pilot to use lateral stick motion to control the attitude, rather than the rate, of the aircraft’s roll. This mode was recently certified for use in land-based operations, but has not yet been approved for shipboard landings and takeoffs.

Maj. Aaron Okun, head of the squadron’s MV-22 flight test department, said that attitude mode is a safer and more stable way to fly the aircraft.

During the week at sea, the team of 50 also test on increasing the tiltrotor’s takeoff and landing weight from a ship.

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