RENO, NV, USA
N86WW
NORTH AMERICAN SNJ-4
THE PILOT EXPERIENCED A 'SEVERE VIBRATION' AND MADE AN EMERGENCY LANDING DURING A HEAT RACE AT THE NATIONAL CHAMPIONSHIP AIR RACES. SUBSEQUENT EXAMINATION REVEALED THAT A PROPELLER BLADE PITCH CHANGE BOLT, P/N 53546, HAD FAILED, ALLOWING ONE PROPELLER BLADE TO MOVE INTO A HIGH PITCH BLADE ANGLE.
Source: NTSB Aviation Accident Database
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