ASN Wikibase Occurrence # 368444
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| Date: | Saturday 8 July 1989 |
| Time: | 12:30 LT |
| Type: |  Sikorsky S-58T |
| Owner/operator: | Aris Helicopters Ltd. |
| Registration: | N6306 |
| MSN: | 58-1491 |
| Engine model: | P&W PT6T-6 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Susanville, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER ENTERED AN UNCOMMANDED LEFT YAW, IN AN AREA WITH SWIRLING WINDS, WHILE INBOUND FOR A FIRE SUPPRESSION WATER DROP. THE PILOT DUMPED THE WATER, RELEASED THE BUCKET COLLECTIVE PITCH AND ENTERED A DESCENT. HE WAS UNABLE TO STOP THE DESCENT DURING THE LANDING FLARE AND THE HELICOPTER COLLIDED WITH THE GROUND.
Probable Cause: THE PILOT'S INFLIGHT DECISION TO ENTER A DESCENT WHEN HE LOST YAW CONTROL OF THE AIRCRAFT. TURBULENT WEATHER CONDITIONS AND AN ABRUPT TOUCHDOWN WERE FACTORS IN THE ACCIDENT.
Accident investigation:
 |
|
Sources:
NTSB LAX89LA265
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 18:30 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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