ASN Wikibase Occurrence # 190747
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| Date: | Wednesday 25 March 1981 |
| Time: | |
| Type: |  Bell 206L-1 LongRanger II |
| Owner/operator: | |
| Registration: | N1077N |
| MSN: | |
| Fatalities: | Fatalities: 0 / Occupants: 6 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Gulf of Mexico -
 Atlantic Ocean
|
| Phase: | En route |
| Nature: | Offshore |
| Departure airport: | |
| Freeport, TX | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
A BELL 206L-1 HELICOPTER, N1077N, WAS EN ROUTE FROM AN OFFSHORE OIL RIG TO SHORE WHEN THE PILOT REPORTED THAT THE ENGINE FLAMED OUT. THE AIRCRAFT WAS SUCCESSFULLY AUTOROTATED TO THE WATER FROM A CRUISING ALTITUDE OF 500 FEET. THE PILOT AND FIVE PASSENGERS ESCAPED INJURY EVEN THOUGH THE HELICOPTER ROLLED OVER DURING WATER ENTRY. DISASSEMBLY OF THE ENGINE (DETROIT DIESEL ALLISON 250-C28) REVEALED THAT THE SPLINED ADAPTER, PART NUMBER 6899243, REVISION A, HAD FRACTURED. THIS ADAPTER CONNECTS THE GAS GENERATOR TURBINE SHAFT TO THE COMPRESSOR IMPLELLER. PRELIMINARY METALLURGICAL EXAMINATION OF THE FRACTURED SURFACE INDICATED FATIGUE. TOTAL SERVICE TIME ON THE ADAPTER WAS 60.6 HOURS.
Accident investigation:
|
Sources:
https://www.ntsb.gov/about/employment/_layouts/ntsb.recsearch/Recommendation.aspx?Rec=A-81-060
https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=27764&key=0
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Oct-2016 13:35 | harro | Added |
Corrections or additions? ... Edit this accident description
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