Aerospatiale SA315B N315DY

Summary

On 13 April 1992 at about 14:45 local time, a Aerospatiale SA315B registered N315DY, operated by Rocky Mountain Helicopters Inc, was involved in an accident near Magna, Utah, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

13 April 1992 at 14:45

Classification

Accident

Location

Magna, Utah, United States

Coordinates

40.6998, -112.0794

Aircraft

Aerospatiale SA315B

Registration

N315DY

Category

Helicopter

Engines

1

Operator

Rocky Mountain Helicopters Inc

Operating rule

Part 133: Rotorcraft Ext. Load

Purpose of flight

Other Work Use

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

SEA92LA076

Nobody was injured.

THE OVERHEAT OF THE ENGINE COMBUSTION SECTION, AND THE FAILURE OF THE TURBINE BLADES.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

THE PILOT OF THE AEROSPATIALE SA315B WAS ATTEMPTING TO LIFT AN EXTERNAL LOAD LIQUID DISPENSING BUCKET WHEN HE REACHED THE MAIN ROTOR PITCH LIMIT. HE THEREFORE REDUCED THE COLLECTIVE, AND AT THE SAME MOMENT EXPERIENCED A TOTAL LOSS OF POWER. THE AIRCRAFT THEN SETTLED ONTO THE BUCKET IT HAD BEEN ATTEMPTING TO LIFT, AND EVENTUALLY ROLLED OVER AND CONTACTED THE GROUND. INVESTIGATION REVEALED THAT, FOR UNDETERMINED REASONS, THE ENGINE HAD EXPERIENCED AN OVER TEMPERATURE CONDITION, WHICH CAUSED THE TURBINE BLADES TO FAIL.

Quoted verbatim from the NTSB record.