ASN Wikibase Occurrence # 297905
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| Date: | Tuesday 11 January 2022 |
| Time: | 10:15 |
| Type: |  Robinson R22 BETA |
| Owner/operator: | Diamont T Helicopters Pty Ltd |
| Registration: | VH-VHE |
| MSN: | 4470 |
| Year of manufacture: | 2010 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 130km SW of Mitchell, QLD -
 Australia
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Mitchell, QLD |
| Mitchell, QLD | |
| Investigating agency: | ATSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The Robinson R22 Beta helicopter with registration VH‑VHE, was participating in a mustering operation south-west of Mitchell, Queensland. At approximately 10:15, 25 minutes into the second mustering flight of the day, the pilot heard a ‘pop’ and a ‘crack’, and experienced a significant uncommanded yaw and abnormal vibration. The pilot completed a forced landing from an altitude of approximately 3 to 5 metres, shut down the engine and inspected the helicopter; identifying that the tail rotor drive shaft had fractured.
The ATSB found that the intake valve in the engine’s number-four cylinder sustained thermal damage, which led to reduced engine performance and required the pilot to conduct a forced landing. During the forced landing, for reasons that could not be determined, the tail rotor drive shaft fractured as a result of torsional overstress.
In addition, an unapproved modification was present on the leading edge of the tail rotor blades, although this probably had no influence on the occurrence.
Accident investigation:
 |
|
Sources:
http://www.atsb.gov.au/publications/investigation_reports/2022/aair/ao-2022-005/
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 10:15 | Pineapple | Added |
| 22-Oct-2022 08:07 | harro | Updated [Total occupants, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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