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| Date: | Friday 17 August 1990 |
| Time: | 09:15 LT |
| Type: |  Aerospatiale AS-350-B |
| Owner/operator: | Temsco Helicopter |
| Registration: | N26492 |
| MSN: | 1066 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 4078 hours |
| Engine model: | Turbomeca ARRIEL 1B |
| Fatalities: | Fatalities: 0 / Occupants: 6 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Juneau, AK -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
SHORTLY ATER TAKEOFF, THE HELICOPTER EXPERIENCED A COMPLETE ENGINE FAILURE. THE PILOT MADE AN EMERGENCY LANDING ONTO AN OPEN LOT. THE ENGINE FAILURE WAS DUE TO A FAILURE AND SEPARATION OF THE TURBINE INTERMEDIATE PINION DRIVEN GEAR WEB UNIT.
Probable Cause: FAILURE OF THE FREE TURBINE INTERMEDIATE PINION DRIVEN GEAR AND SUBSEQUENT DISINTEGRATION OF THE FREE TURBINE ASSEMBLY.
Accident investigation:
 |
|
Sources:
NTSB ANC90LA147
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 20:11 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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