NEAR SAVANNAH, GA, USA
N100TA
GATES LEARJET 23
THE FLT WAS CLEARED TO DESCEND FROM FL410 TO FL390. THE FLIGHTCREW ACKNOWLEDGED THE CLEARANCE & ATC OBSERVED THE RADAR TARGET DESCEND. THE ACFT SUDDENLY PITCHED UP WHEN WITHIN 600 FT OF FL390 & CLIMBED. THE PITCHUP WAS FOLLOWED BY TWO PITCH OSCILLATIONS WHICH WERE THEN FOLLOWED BY AN UNCONTROLLED DESCENT AT PROGRESSIVELY STEEPER ANGLES UNTIL IMPACT INTO THE ATLANTIC OCEAN.
Source: NTSB Aviation Accident Database
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