ASN Wikibase Occurrence # 214351
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Wednesday 29 May 1985 |
| Time: | 09:00 |
| Type: |  Bell 47G-5 |
| Owner/operator: | |
| Registration: | VH-SJY |
| MSN: | |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ivanhoe Station, WA -
 Australia
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Ivanhoe Station, WA |
| Ivanhoe Station, WA | |
| Investigating agency: | BASI |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was engaged in cattle mustering on Ivanhoe Station. The pilot in command was training the other pilot in aerial mustering techniques. While the helicopter was being flown at about 50 feet above ground level, one main rotor blade grip failed. The associated main rotor blade separated from the helicopter and the resulting imbalance caused the other main rotor blade and transmission to be torn from the helicopter. The aircraft then fell to the ground, landing on its right side. The main rotor blade grip failed due to a combination of fatigue and overload forces. Examination of the aircraft records revealed that because of a error in the recording of component hours, the 5000 hour service life of the grip had been exceeded by 687 hours. During the investigation inspections of the blade grips on several other helicopters were carried out. Fatigue cracking was revealed in a significant number of the blade grips inspected. As a result, the manufacturer of the aircraft has recommended a reduction in the service life of the component.
Accident investigation:
 |
|
Sources:
https://www.atsb.gov.au/publications/investigation_reports/1985/aair/aair198500137/
https://www.atsb.gov.au/media/31681/aair198500137.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Aug-2018 00:25 | Pineapple | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation