ASN Wikibase Occurrence # 296471
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| Date: | Friday 1 November 2002 |
| Time: | 11:50 LT |
| Type: |  Hughes 269A |
| Owner/operator: | Tundra Resources Corporation |
| Registration: | N8885F |
| MSN: | 730261 |
| Total airframe hrs: | 1506 hours |
| Engine model: | Lycoming HO-360-B1B |
| Fatalities: | Fatalities: / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Fort Gibson, Oklahoma -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Cookson, OK |
| Tulsa-Richard Lloyd Jones Jr. Airport, OK (RVS/KRVS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During cruise flight, the helicopter experienced an in-flight breakup. Witnesses observed what appeared to be tail rotor, and main rotor components separate from the helicopter as it flew overhead. One of the witnesses reported that a portion of the tail rotor separated, and as helicopter pitched to the right, the main rotor separated. Subsequently, the helicopter's main fuselage started to spin and descended vertically toward the ground. Another witness reported that he heard a "pop," and observed the main rotor slowing, wobbling, stop turning, break away from the helicopter, and travel forward of the helicopter. He reported that the helicopter pitched "nose forward and then fell almost vertical." The main rotor assembly was found approximately 450 feet east of the main wreckage site, and the tail rotor components were found with the main wreckage. Metallurgical examination revealed that the left cluster fitting lugs (P/N 269A2234), which attached to the left tail boom strut, failed due to fatigue.
Probable Cause: The in-flight separation of the tail boom resulting from the failure of the fuselage to tail boom attachment fitting lugs, due to fatigue.
Accident investigation:
 |
|
Sources:
NTSB FTW03FA028
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Oct-2022 06:59 | ASN Update Bot | Added |
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