ASN Wikibase Occurrence # 366091
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| Date: | Thursday 4 October 1990 |
| Time: | 15:20 LT |
| Type: |  Hughes 500D |
| Owner/operator: | Temsco Helicopters, Inc. |
| Registration: | N1107G |
| MSN: | 210899D |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 4266 hours |
| Engine model: | Allison 250-C20-B |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Kennsington, AK -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT-IN-COMMAND WAS UNABLE TO FIND A FLAT SPOT TO SET THE HELICOPTER ON TO PICK UP HIS PASSENGERS. HE NOSED THE HELICOPTER INTO THE SIDE OF THE MOUNTAIN AND MAINTAINED THE AFT PORTION OF THE SKIDS AT A HOVER. THE PASSENGERS LOADED THEMSELVES AND WERE STRAPPED IN WHEN THE PILOT BEGAN HIS TAKEOFF. HE APPLIED POWER AND THE HELICOPTER BEGAN SETTLING AFT. HE CONTINUED TO APPLY POWER AND THE HELICOPTER ROLLED OVER ONTO ITS LEFT SIDE AND TURNED 90 DEGREES TO ITS LEFT. THE PILOT DID NOT RECALL HEARING AN ENGINE-OUT WARNING AND THE CIRCUIT BREAKER WAS FOUND IN THE OUT POSITION. EXAMINATION OF THE HELICOPTER AND TEST RUN OF THE ENGINE SHOWED NO REASON FOR A LOSS OF ENGINE POWER OR MECHANICAL FAILURE. THE TERRAIN WAS UNEVEN AND VERY ROCKY.
Probable Cause: THE LOSS OF CONTROL DURING TAKEOFF DUE TO DYNAMIC ROLLOVER. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT-IN-COMMAND'S SELECTION OF AN UNEVEN LANDING AREA.
Accident investigation:
 |
|
Sources:
NTSB ANC91FA001
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 17:20 | ASN Update Bot | Added |
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