Aviation Accident Summaries

Aviation Accident Summary LAX86LA036

MAMMOTH LAKES, CA, USA

Aircraft #1

N3096R

PIPER PA-28R-200

Analysis

THE PLT REPORTED THAT WHEN HE OBSERVED THE ARPT'S WIND SOCK IN PREPARATION FOR DEPARTURE THE WIND WAS BLOWING DOWN THE RWY WITH OCCASIONAL GUSTS THAT DID NOT SEEM OVER 20 KTS. AFTER TAKING OFF & CLIMBING TO ABT 100 FT AGL, THE ACFT ENCOUNTERED TURBULENCE LIKELY ASSOCIATED WITH A MOUNTAIN WAVE CONDITION. THE PLT STATED & A GROUND- BASED WITNESS REPORTED THAT THE ACFT RAPIDLY ROLLED 90 DEG. RT & DESCENDED. JUST BEFORE COLLIDING WITH TERRAIN THE ACFT'S WINGS WERE LEVELED. NO MECHANICAL FAILURES OR MALFUNCTIONS WERE REPORTED BY THE PLT. 30 MIN AFTER THE CRASH THE ARPT'S SPECIAL WX OBSERVATION LISTED THE PRESENCE OF STANDING LENTICULAR ALTOCUMULUS CLDS IN ALL QUADRANTS, & THE SURFACE WINDS WERE 15 KTS GUSTING TO 25 KTS.

 

Source: NTSB Aviation Accident Database

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