Aerospatiale SA315B N351RM
7 August 1990 · Cougar, Washington, United States · Serious injuries
Summary
On 7 August 1990 at about 18:30 local time, a Aerospatiale SA315B registered N351RM, operated by Rocky Mountain Helicopters, was involved in an accident near Cougar, Washington, United States. One person was on board and one was seriously injured. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 18:30
- Classification
- Accident
- Location
- Cougar, Washington, United States
- Coordinates
- 46.1903, -122.1291
- Aircraft
- Aerospatiale SA315B
- Registration
- N351RM
- 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
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA90FA158
People
1 person was seriously injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 1 | 0 | 0 |
Probable cause
LOSS OF POWER DUE TO CONTAMINATION IN THE ENGINE SPEED GOVERNOR.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE ACFT WAS HOVERING OVER TREES AT APPROX 200 FT. AGL, PICKING UP A LOAD OF LOGS DURING A LONG LINE HELI-LOGGING OPERATION, WHEN THE ENGINE LOST POWER. THE ACFT DESECENDED VERTICALLY AND IMPACTED THE TERRAIN. DISASSEMBLY AND EXAMINATION OF THE ENGINE SPEED GOVERNOR REVEALED PARTICLES OF SEALANT MATERIAL INSIDE THE GOVERNOR ASSY.
Quoted verbatim from the NTSB record.
Other Aerospatiale SA315B accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 23 May 1990 | Aerospatiale SA315B | La Sal, Utah, United States | GEO - Seis Helicopters, Inc | Serious injuries | - |
| 8 Nov 1990 | Aerospatiale SA315B LAMA | Trout Lake, Washington, United States | Rocky Mountain Helicopters | Minor injuries | - |
| 18 Apr 1988 | Aerospatiale SA315B | Near Central, Alaska, United States | Rocky Mountain Helicopters Inc | Minor injuries | - |
| 13 Jul 1988 | Aerospatiale SA315B | Oakridge, Oregon, United States | Gradney Helicopters, Inc. | Serious injuries | - |
| 13 Apr 1992 | Aerospatiale SA315B | Magna, Utah, United States | Rocky Mountain Helicopters Inc | No injuries | - |
| 20 Feb 1986 | Aerospatiale SA315B | Meeker, Colorado, United States | Colorado Airlift, Inc. | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 9 Jan 1990 | Cessna 177B | Friday Harbor, Washington, United States | - | No injuries | - |
| 4 Feb 1990 | Bell 206B | Winthrop, Washington, United States | - | No injuries | - |
| 1 Mar 1990 | Bell BH-47G3B2 | Des Moines, Washington, United States | Richard H. Butz | Minor injuries | - |
| 25 Feb 1990 | Cessna 140 | Vancouver, Washington, United States | Bogar, Floyd | No injuries | - |
| 12 Mar 1990 | Cessna 150J | Graham, Washington, United States | - | No injuries | - |
| 12 Mar 1990 | Bell 206 | Cougar, Washington, United States | Bluebird Helicopter | No injuries | - |