uncommanded

One advantage of the Air Force study (and the three-year Pentagon study it motivated) is that it investigated accidents ” such as uncommanded rolls and dives ” that were fatal to the crews.

There Is Nothing Left To Do But Care Eric McKinley 2009

Eleven times during the tests Macdonald flew, one of the rotors went into vortex ring state and the Osprey did a sudden, uncommanded roll—seven times to the right, four times to the left.

The Dream Machine Richard Whittle 2010

Eleven times during the tests Macdonald flew, one of the rotors went into vortex ring state and the Osprey did a sudden, uncommanded roll—seven times to the right, four times to the left.

The Dream Machine Richard Whittle 2010

“A tiltrotor aircraft, when deep within the vortex ring state region, can encounter uncommanded roll motions due to its side by side proprotor configuration,” the panel acknowledged, but the tests suggested it was just as easy for an Osprey to get out of it.

The Dream Machine Richard Whittle 2010

Eleven times during the tests Macdonald flew, one of the rotors went into vortex ring state and the Osprey did a sudden, uncommanded roll—seven times to the right, four times to the left.

The Dream Machine Richard Whittle 2010

“A tiltrotor aircraft, when deep within the vortex ring state region, can encounter uncommanded roll motions due to its side by side proprotor configuration,” the panel acknowledged, but the tests suggested it was just as easy for an Osprey to get out of it.

The Dream Machine Richard Whittle 2010

“A tiltrotor aircraft, when deep within the vortex ring state region, can encounter uncommanded roll motions due to its side by side proprotor configuration,” the panel acknowledged, but the tests suggested it was just as easy for an Osprey to get out of it.

The Dream Machine Richard Whittle 2010

Slowly, the bird started an uncommanded slow roll to the left, unresponsive to the stick.

Hal Donahue: 'The Unforgiving Minute', Craig Mullaney's Service 2009

Three months after the accident, the United States FAA issued an Airworthiness Directive that "required the deactivation of all electrically controlled B767… thrust reversers until corrective actions were identified to prevent uncommanded in-flight thrust reverser deployment" (as summarized in Thai Aircraft Accident Investigation Committee report, 2.5.4, paragraph 4).

There Is Nothing Left To Do But Care Eric McKinley 2009

Because he was giving a summary, he listed only the three most important, one of which was a sudden, uncommanded dive.

There Is Nothing Left To Do But Care Eric McKinley 2009