ASN Wikibase Occurrence # 213140
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| Date: | Wednesday 12 September 1984 |
| Time: | 16:48 |
| Type: | Bell 47J-2 |
| Owner/operator: | |
| Registration: | VH-THH |
| MSN: | |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Location: | Mataranka, NT -
 Australia
|
| Phase: | Landing |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Mataranka, NT |
| Mataranka, NT | |
| Investigating agency: | BASI |
| Confidence Rating: |  Accident investigation report completed and information captured |
A ten minute flight in the local area had been completed without incident. After departure for a second flight, the helicopter was climbed to 150 feet above ground level to allow the passengers to view the campsite and a herd of animals. The pilot and passengers then heard a loud bang which was followed by a severe airframe vibration. The noise and vibration continued and the pilot elected to carry out an autorotational descent and land in a small clearing. The clearing was overshot and the helicopter struck several trees. Investigation indicates that the engine cooling fan drive belt, which rotates at high rpm, failed. The flailing belt then tore a section of the canvas cooling fan shroud. Vibration was produced when the broken belt and section of shroud were ingested into the cooling fan.
Accident investigation:
 |
|
Sources:
https://www.atsb.gov.au/publications/investigation_reports/1984/aair/aair198403572/
https://www.atsb.gov.au/media/31489/aair198403572.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Jul-2018 08:25 | Pineapple | Added |
Corrections or additions? ... Edit this accident description
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