VISALIA, CA, USA
N9273M
MOONEY M20E
THE PILOT REMOVED THE VACUUM PUMP FROM THE ENGINE PRIOR TO THE FLIGHT BECAUSE OF AN INTERNAL FAILURE IN THE PUMP. THE PILOT DID NOT INSTALL A COVER PLATE ON THE ACCESSORY MOUNTING HOLE VACATED BY THE PUMP. AFTER TAKEOFF ON THE LOCAL FLIGHT, THE PILOT NOTICED THE OIL PRESSURE WAS DROPPING AND THE TEMPERATURE WAS RISING. HE ELECTED TO RETURN TO THE AIRPORT. THE ENGINE SIEZED AND THE PILOT MADE A FORCED LANDING IN A COTTON FIELD.
Source: NTSB Aviation Accident Database
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