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F-22 prototype crashes due to Pilot Induced Oscillations
On April 25th 1992, this F-22 prototype crashes on the runway at the Edwards Air Force Base. The plane pitches forward and back 40 feet (12 m) above the runway, lands hardly without gear down, slides 8000 feet (2400 m), and partially burns. The pilot was not seriously hurt.
Investigations showed that the accident was caused by Pilot Induced Oscillations (PIO happens when the flight controls reacts too slowly in regards to the pilot orders).
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