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Atlas / NTSB / LAX90FA106

NTSB CAROL · Event

Event LAX90FA106

1990-02-27 YOUNTVILLE, California, United States Airport · APC Fatal 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

THE PILOT USED POOR JUDGEMENT BY ATTEMPTING A V.F.R. FLIGHT TO AN AREA WITH FORECASTED INSTRUMENT METEOROLOGICAL CONDITIONS AND CONTINUING THE FLIGHT WHEN I.F.R. CONDITIONS WERE ENCOUNTERED.

Factual narrative

THE NONINSTRUMENT RATED PLT CALLED FLT SERVICE A DAY BEFORE THE ACCIDENT AND REQUESTED AND RECEIVED AN IFR BRIEFING FOR THE ACCIDENT FLIGHT. THE WX BRIEFER PROVIDED THE PLT WITH THE BRIEFING WHICH CONSISTED OF IFR CONDITIONS AT THE DESTINATION AIRPORT AREA WHICH INCLUDED THE ACCIDENT SITE. GND WITNESSES OBSERVED THE AIRPLANE MANEUVERING IN THE ACCIDENT AREA BEFORE IT ENTERED INTO THE 500 FT CEILING STRATUS CLOUDS. THE PREVAILING VISIBILITY WAS LESS THAN 1 MILE. THE ENGINE SOUND INCREASED RAPIDLY WHEN THE AIRPLANE ENTERED THE CLOUDS ABT 2 SECONDS BEFORE IT COLLIDED WITH THE SIDE OF THE HILL. THE ACFT EXAMINATION DISCLOSED THAT IT STRUCK THE HILLSIDE IN A LEVEL FLT ATTITUDE; THE PROPELLER BLADES AND HUB ASSY SHOWED DAMAGE CHARACTERISTICS CONSISTENT WITH HIGH POWER BEING DEVELOPED AT IMPACT. NO PREEXISTING MALFUNCTIONS AND/OR FAILURES WERE NOTED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_LAX90FA106.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.