NTSB Identification: FTW86LA166.
The docket is stored on NTSB microfiche number 31548.
Accident occurred Saturday, September 13, 1986 in OKLAHOMA CITY, OK
Aircraft: MOONEY M20E, registration: N1250X
Injuries: 4 Minor.

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 APPARENTLY HAD NEGLECTED TO CHECK HIS ENGINE OIL SUPPLY BEFORE TAKEOFF SINCE THERE WAS NO OIL IN THE CRANKCASE AT THE TIME OF THE ACCIDENT. IF FIVE QUARTS OF OIL (THE AMOUNT THE PILOT REPORTEDLY STATED WAS IN THE ENGINE AT TAKEOFF) HAD LEAKED OUT DURING A FIVE MINUTE FLIGHT, THEN THE BOTTOM OF THE FUSELAGE AND THE EMPENNAGE ASSEMBLY WOULD HAVE BEEN COATED WITH OIL. EXAMINATION OF THE AIRCRAFT AT THE ACCIDENT SITE SHOWED NO SIGNS OF AN OIL LEAK. THE FORCED LANDING WAS MADE ON ROUGH AND UNEVEN TERRAIN. AFTER TOUCHDOWN THE NOSE GEAR CONTACTED A DIRT BANK AND COLLAPSED.

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

ENGINE ASSEMBLY..FAILURE,TOTAL

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

FLUID,OIL..EXHAUSTION

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

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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