ASN Wikibase Occurrence # 367646
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| Date: | Wednesday 29 November 1989 |
| Time: | 16:30 LT |
| Type: | Hiller UH-12E Soloy |
| Owner/operator: | Glacier Helicopters |
| Registration: | N9762C |
| MSN: | 2159 |
| Year of manufacture: | 1962 |
| Total airframe hrs: | 8066 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Raymond, WA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Raymond, WA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING AN EXTERNAL LOAD OPERATION, WHILE HAULING A LOAD UPHILL TO THE LANDING ZONE, THE PILOT HEARD A LOUD NOISE AND THE ENGINE BEGAN TO LOSE POWER. THE PILOT RELEASED THE LOAD AND AUTOROTATED TO A LANDING ON INCLINED TERRAIN. WHILE LANDING, THE HELICOPTER ROLLED OVER. DURING AN ENGINE TEARDOWN, A SECTION OF THE IMPELLER WAS FOUND TO HAVE FAILED FROM FATIGUE, WHICH RESULTED IN ADDITIONAL DAMAGE TO THE ENGINE AND A LOSS OF POWER.
Probable Cause: LOSS OF ENGINE POWER DUE TO FATIGUE FAILURE OF THE IMPELLER. THE HELICOPTER WAS SUBSTANTIALLY DAMAGED AS A RESULT OF A ROLL-OVER ON UNEVEN TERRAIN.
Accident investigation:
 |
|
Sources:
NTSB SEA90LA025
History of this aircraft
Other occurrences involving this aircraft
| 20 April 2000 | N9762C | Henry Haddock | 0 | Stonesboro, South Carolina | |
sub |
| Fuel exhaustion | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 17:19 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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