Aviation Accident Summaries

Aviation Accident Summary SEA87LA092

SILETZ, OR, USA

Aircraft #1

N47256

AEROSPATIALE SA315-D LAMA

Analysis

DURING EXTERNAL LOAD OPERATIONS THE CHOCKERS BECAME LOOSE DUE TO IMPROPER LOADING. THE EXTERNAL LOAD LONGLINE CABLE BECAME ENTANGLED WITH THE TAILROTOR CAUSING A FAILURE OF THE TAIL ROTOR SYSTEM. THE HELICOPTER ASSUMED A NOSE DOWN ATTITUDE AND SPUN TO THE LEFT, IMPACTING TERRAIN WITH THE LEFT SKID, AND THEN ROLLING OVER ONTO ITS RIGHT SIDE. THE TAIL ROTOR WAS LOCATED 100 YARDS FROM THE IMPACT AREA.

 

Source: NTSB Aviation Accident Database

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