NTSB Identification: ATL92LA052.
The docket is stored on NTSB microfiche number 46241.
Accident occurred Sunday, March 01, 1992 in CHARLESTON, SC
Probable Cause Approval Date: 08/13/1993
Aircraft: MOONEY M20C, registration: N6748U
Injuries: 1 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 ATTEMPTED TO CHANGE FUEL TANKS, AFTER HE EXPERIENCED A LOSS OF ENGINE POWER. THE ENGINE REGAINED POWER FOR A SHORT PERIOD OF TIME, AND THEN LOST POWER AGAIN. THE PILOT EXECUTED AN EMERGENCY LANDING IN A GROUP OF SMALL TREES. EXAMINATION OF THE AIRCRAFT REVEALED THAT THE RIGHT WING FUEL TANK WAS EMPTY, AND THE LEFT FUEL TANK WAS APPROXIMATELY ONE FOURTH FULL. FURTHER EXAMINATION REVEALED THAT THE LEFT WING TANK FUEL VENT WAS BLOCKED BY NESTING DIRT DAUBERS, AND AIR COULD NOT BE FORCED THROUGH THE VENT.

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

THE BLOCKED FUEL VENT.

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