Aerospatiale SA315-D LAMA N47256

Summary

On 13 May 1987 at about 13:20 local time, a Aerospatiale SA315-D LAMA registered N47256, operated by Rocky Mountain Helicopters, was involved in an accident near Siletz, Oregon, United States. One person was on board and one had minor injuries. The aircraft was destroyed. No probable cause statement is available for this record.

Date

13 May 1987 at 13:20

Classification

Accident

Location

Siletz, Oregon, United States

Coordinates

44.7692, -123.9193

Aircraft

Aerospatiale SA315-D LAMA

Registration

N47256

Category

Helicopter

Engines

1

Operator

Rocky Mountain Helicopters

Operating rule

Part 133: Rotorcraft Ext. Load

Purpose of flight

Other Work Use

Phase of flight

Not recorded

Route

Newport → Unknown

Aircraft damage

Destroyed

Weather

VMC

Light

Dawn

NTSB number

SEA87LA092

1 person had minor injuries.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.