ASN Wikibase Occurrence # 382509
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| Date: | Saturday 26 February 1983 |
| Time: | 12:45 LT |
| Type: |  Bell 47G-2 |
| Owner/operator: | Private |
| Registration: | N5191B |
| MSN: | 2176 |
| Engine model: | Lycoming VO-435-A1F |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Hardeeville, SC -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PLT STATED THAT HE NOTICED A PECULIAR PEDAL REACTION DURING A TURN-AROUND; HOWEVER, HE REPORTED THAT THIS MAY HAVE BEEN CAUSED BY THE WIND WHICH WAS GUSTING TO 15 KTS. SHORTLY AFTER COMPLETING THE TURN-AROUND, HE EXPERIENCED A COMPLETE LOSS OF TAIL ROTOR CONTROL. THE FAILURE WAS REALIZED BY A REDUCTION OF NOISE, AN RPM INCREASE & AYAW TO THE RIGHT. THIS OCCURRED AT AN ALTITUDE OF APRX 300 FT AGL. THE PLT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL IN FLT, SO HE AUTOROTATED TO A NARROW LOGGING ROAD. WHILE DESCENDING TO LAND, THE MAIN ROTOR STRUCK TREES ON BOTH SIDES OF THE ROAD. DURING TOUCHDOWN. THE MAIN ROTOR STRUCK & SVERED THE TAIL BOOM. AN EXAM REVEALED THE TEETH ON THE FORWARD (SHORT) TAIL ROTOR DRIVE SHAFT, PN 47-644-180-9, WERE WORN & OVERHEATED. ALSO, THE MATCHING SPLINES ON THE FRONT COUPLING, PN 47-620-494-3, WERE OVERHEATED & STRIPPED. ONLY A MINIMAL AMOUNT OF LUBRICATION WAS FOUND IN THE FRONT COUPLING. THE BELL MAINTENANCE & OVERHAUL INSTRUCTIONS RECOMMENDED DAILY INSPECTIONS & LUBE EVERY 50 HRS.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ATL83FA122
History of this aircraft
Other occurrences involving this aircraft
| 17 April 1988 | VH-OCT | 3 | Horsley Park, NSW |  |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Apr-2024 14:39 | ASN Update Bot | Added |
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