ASN Wikibase Occurrence # 383656
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| Date: | Saturday 7 August 1982 |
| Time: | 14:03 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Olympic Air, Inc. |
| Registration: | N10966 |
| MSN: | 1000818D |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 1259 hours |
| Engine model: | Allison 25O-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Shelton, WA -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Shelton, WA (KSHN) |
| Shelton, WA (KSHN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A SIGHT SEEING FLIGHT THE PILOT SMELLED A BURNING ODOR AND PREPARED TO MAKE A PRECAUTIONARY OFF-AIRPORT LANDING. SHORTLY THEREAFTER, ENGINE RPM DECAYED AND AN AUTOROTATIVE LANDING WAS EFFECTED ON A DIRT ROAD. ON TOUCHDOWN, THE MAIN ROTOR BLADES FLEXED DOWNWARD, STRIKING THE TAIL BOOM AND SEPARATING IT FROM THE FUSELAGE. THE INVESTIGATION REVEALED THETURBINE-TO-COMPRESSOR COUPLING WAS BOUND TO THE POWER TURBINE SHAFT WHICH SLEEVES IT. THERE WAS EVIDENCE OF THERMAL AND MECHANICAL DISTRESS TO THE COMPONENTS, CAUSED BY OVER-HEATING AND COKING OF THE OIL.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB SEA82DA137
History of this aircraft
Other occurrences involving this aircraft
| 25 September 1983 | N10966 | Olympic Air, Incorporated | 0 | Cougar, WA | |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 03:01 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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