Aviation Accident Summary NYC89LA195

MILBRIDGE, ME, USA

Aircraft #1

N89JD

ENSTROM 280C

Analysis

SHORTLY AFTER DEPARTING THE PILOT'S PRIVATE HELIPORT IN MILBRIDGE, MAINE, THE HELICOPTER HAD A PARTIAL LOSS OF POWER. IT WAS THEN AUTOROTATED INTO THE NARRAGUAGUS RIVER AND WAS SUBSTANTIALLY DAMAGED. THE NUMBER 3 INTAKE VALVE OUTER SPRING, P/N LW11796, HAD BROKEN NEAR THE TOP OF THE VALVE STEM.

Probable Cause and Findings

FAILURE OF THE NUMBER 3 INTAKE VALVE OUTER SPRING. THE WATER (RIVER) IN THE EMERGENCY LANDING AREA WAS A RELATED FACTOR.

 

Source: NTSB Aviation Accident Database

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