NTSB Identification: NYC88LA184.
The docket is stored on NTSB microfiche number 38686.
Accident occurred Sunday, July 17, 1988 in PRINCETON, NJ
Probable Cause Approval Date: 01/24/1990
Aircraft: MOONEY M20F, registration: N6310Q
Injuries: 2 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 MOONEY M20F MADE A TAKEOFF AND AS THE PILOT TURNED CROSSWIND, HE EXPERIENCED A PARTIAL POWER LOSS. HE RETURNED FOR A LANDING AND THE ENGINE SMOOTHED OUT. HE MADE EXTENSIVE GROUND RUNS AND COULD NOT DUPLICATE THE PROBLEM. HOWEVER HE DID NOT HAVE MAINTENANCE PERSONNEL LOOK AT THE AIRCRAFT. ON THE SECOND TAKEOFF, HE AGAIN LOST POWER AND THIS TIME, MADE AN OFF AIRPORT LANDING IN A FIELD. EXAMINATION OF THE ENGINE REVEALED THAT THE SPARK PLUGS HAD SOOT ON THEM. THE FUEL INJECTOR SERVO, MANIFOLD, AND NOZZLES CHECKED OUT OK; HOWEVER, THE RUBBER INTAKE BOOT BETWEEN THE AIR FILTER AND THE FUEL SERVO WAS FOUND PARTIALLY COLLAPSED.

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

INDUCTION AIR DUCTING..COLLAPSED

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

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..ATTEMPTED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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