Aviation Accident Summary NYC85LA005

MOULTONBORO, NH, USA

Aircraft #1

N401GC

BELL 47G3-B1

Analysis

ACFT WAS CLIMBING THROUGH A MOUNTAIN SADDLE WHEN THE ENGINE BEGAN TO BACKFIRE AND LOSE POWER. PLT ENTERED AUTOROTATION & SETTLED INTO TREES ON AUTOROTATIVE FLARE. ENGINE INSPECTION REVEALED #3 CYLINDER INTAKE VALVE SPRINGS BROKEN.

 

Source: NTSB Aviation Accident Database

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