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LAX91LA200

1991-05-05 · FULLERTON, California, United States · None · 1 aircraft · Status: Completed

Airport FUL

Aircraft involved

Probable cause & findings

THE LOSS OF POWER IN THE FRONT ENGINE DUE TO THE IMPROPER AND INCOMPLETE INSTALLATION OF THE ENGINE IN THE AIRCRAFT BY A MECHANIC.

Factual narrative

THE AIRCRAFT WAS ON A GO AROUND AT ABOUT 30 FT AGL WHEN THE FRONT ENGINE QUIT. THE PLT RETARDED BOTH THROTTLES AND LANDED; THE AIRCRAFT OVERRAN THE DEPARTURE END OF THE RUNWAY AND COLLIDED WITH A FENCE. THE FRONT ENGINE WAS OVERHAULED AND INSTALLED IN THE AIRCRAFT 2 HRS PRIOR TO THE ACCIDENT. EXAMINATION OF THE ENGINE REVEALED NUMEROUS DISCREPANCIES RELATING TO INCOMPLETE INSTALLATION OF THE ENGINE: TOOLS LEFT IN THE ENG COMPARTMENT; LOOSE AND NOT CONNECTED OIL AND FUEL LINES; IMPROPERLY CONNECTED THROTTLE AND MIXTURE CONTROLS; ETC. THE TURBO CONTROLLER WAS FOUND MISADJUSTED AND NOT PROPERLY CONTROLLING THE WASTE GATE VALVE. THE FUEL PRESSURE WAS SET EXCESSIVELY HIGH, WHICH CAUSED THE ENGINE TO QUIT WHEN RUN IN A TEST CELL. THE AIRCRAFT LOGBOOKS SHOWED THAT THE ENGINE INSTALLATION HAD BEEN SIGNED OFF BY AN AIRFRAME AND POWERPLANT MECHANIC AS COMPLETE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_LAX91LA200.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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