NTSB Identification: LAX88LA054.
The docket is stored on NTSB microfiche number 36424.
Accident occurred Tuesday, November 24, 1987 in SAN CLEMENTE, CA
Probable Cause Approval Date: 04/24/1989
Aircraft: CESSNA 152, registration: N5418P
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.A PARTIAL LOSS OF ENG POWER OCCURRED WHILE THE STUDENT PLT WAS ON A SOLO X-COUNTRY FLT. HE APPLIED CARB HEAT, BUT TO NO AVAIL. THE ENG CONTINUED TO RUN ROUGH & THE PLT MADE AN EMERGENCY LANDING ON UPWARD SLOPING TERRAIN. DURING THE LANDING ROLL, THE NOSE GEAR HIT A HOLE IN THE DIRT & THE ACFT NOSED OVER. AN EXAM OF THE ENG DISCLOSED THAT THE #3 EXHAUST VALVE RETAINING NUT HAD BACKED OFF UNTIL THE VALVE WOULD NOT OPERATE AS THE CRANKSHAFT WAS ROTATED. DURING MAINTENANCE ON THE PREVIOUS DAY, THE #3 VALVES HAD BEEN ADJUSTED.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
ENGINE ASSEMBLY,VALVE,EXHAUST..LOOSE
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
MAINTENANCE..IMPROPER..COMPANY MAINTENANCE PERSONNEL
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
ENGINE ASSEMBLY,VALVE,EXHAUST..INOPERATIVE
Contributing Factors
TERRAIN CONDITION..ROUGH/UNEVEN
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