ASN Wikibase Occurrence # 42646
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| Date: | Sunday 23 February 1992 |
| Time: | 17:30 LT |
| Type: |  Bell 214B-1 |
| Owner/operator: | Rmh Aerologging |
| Registration: | N814RM |
| MSN: | 28067 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 6675 hours |
| Engine model: | Lycoming T-5508D |
| Fatalities: | Fatalities: 6 / Occupants: 11 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | near Hobart Bay, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Field Site, AK |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT IN COMMAND HAD A MECHANIC ATTACH A 30 FOOT CHOKER CABLE TO THE EXTERNAL CARGO HOOK SO THAT WHEN HE CAME TO A HOVER TO PICK UP PASSENGERS, THE CABLE WOULD TOUCH THE GROUND AND DISSIPATE THE STATIC ELECTRICITY. AFTER PICKING UP THE LAST TIMBER CUTTERS, EN ROUTE TO BASE CAMP, THE HELICOPTER FLEW THROUGH TURBULENCE AND A PASSENGER IN THE CABIN YELLED. THE PILOT TURNED TO LOOK AT THE PASSENGER, LOOKED FORWARD, HEARD A BANG AND EXPERIENCED A YAW. THE TAIL ROTOR AND 90 DEGREE GEARBOX SEPARATED FROM THE HELICOPTER AND HE AUTOROTATED INTO TALL TREES. SUBSEQUENT EXAMINATION SHOWED THE MARKS IN THE TAILROTOR BLADE MATCHED THE SOCKET SHAPE AT THE END OF THE CABLE.
Probable Cause: SEPARATION OF THE TAIL ROTOR AND 90 DEGREE GEARBOX DUE TO THE PILOT'S FAILURE TO FOLLOW PROCEDURES/DIRECTIVES WHICH RESULTED IN THE EXTERNAL LOAD CABLE BECOMING ENTANGLED IN THE TAIL ROTOR. FACTORS WERE THE TURBULENT WEATHER AND THE LACK OF SUITABLE TERRAIN FOR A FORCED LANDING.
Accident investigation:
 |
|
Sources:
NTSB ANC92FA040
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 19-Feb-2013 12:32 | TB | Updated [Operator, Location, Nature, Source] |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 08:49 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Source, Narrative, Accident report] |
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