NTSB Identification: LAX88LA279.
The docket is stored on NTSB microfiche number 37757.
Accident occurred Wednesday, August 03, 1988 in VISALIA, CA
Probable Cause Approval Date: 11/07/1989
Aircraft: MOONEY M20E, registration: N9273M
Injuries: 4 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ACCESSORIES,VACUUM PUMP..LACK OF

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FLUID,OIL..LOSS,TOTAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY..SEIZED

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,MODIFICATION..IMPROPER..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..NONE SUITABLE


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION

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