ASN Wikibase Occurrence # 385700
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| Date: | Tuesday 26 June 2001 |
| Time: | 18:58 LT |
| Type: |  Bell 212 |
| Owner/operator: | State Of Alaska, Division Of Forestry |
| Registration: | N5017H |
| MSN: | 30930 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 10002 hours |
| Engine model: | P&W PT6T-3 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Clear, AK -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Clear, AK |
| Clear, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was flying a twin engine helicopter that was lightly loaded. He was flying in close proximity to a helipad, waiting for another helicopter to leave the pad, when he reported he had a loss of engine power in the number two engine. Although the helicopter's operations manual specified that the helicopter was easily capable of sustaining flight, and even of initiating a rate of climb somewhere between 550 and 700 feet per minute, the pilot elected to make an immediate landing into a confined area. During the descent, the helicopter collided with trees, and sustained substantial damage. An examination of the engines disclosed that an improper bleed air flow jet was left installed in the engine's automatic fuel control unit (AFCU), contrary to a service bulletin from the manufacturer. The presence of the air flow jet resulted in a substandard fuel flow pressure, and the potential for a loss of engine power.
Probable Cause: The pilot's selection of an unsuitable landing site following a partial loss of power during approach to landing in a multiengine helicopter. Factors associated with the accident are an automatic fuel control unit that had a restricted fuel flow due to an improperly complied with service bulletin, and the pilot's improper single engine emergency procedures.
Accident investigation:
 |
|
Sources:
NTSB ANC01TA076
History of this aircraft
Other occurrences involving this aircraft
| 15 July 2002 | N5017H | State Of Alaska | 0 | Wasilla, Alaska | |
sub |
| 3 December 2003 | N5017H | Evergreen Helicopters International, Inc. | 0 | Galliano, LA | |
non |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 06:57 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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