ASN Wikibase Occurrence # 245316
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| Date: | Wednesday 2 December 2020 |
| Time: | 16:30 LT |
| Type: |  Robinson R44 Raven I |
| Owner/operator: | Hughes Helicopters Pty Ltd |
| Registration: | VH-HGU |
| MSN: | 2615 |
| Year of manufacture: | 2020 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 31 km east of Goulburn Airport, NSW -
 Australia
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Goulburn Airport, NSW (GUL/YGLB) |
| Goulburn Airport, NSW (GUL/YGLB) | |
| Investigating agency: | ATSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A Robinson R44 Raven I, registered VH-HGU, departed Goulburn Airport, New South Wales with a student pilot and instructor on board. The helicopter flew east, and the last recorded ADS-B detected it descending into a valley in the Bungonia State Conservation Area. A search commenced when the helicopter did not return as expected, and the wreckage of VH-HGU was found in a valley, approximately 4 km north-west of its last ADS-B transmission. Both pilots were fatally injured, and the helicopter was destroyed.
Contributing factors:
- While flying in the vicinity of the valley, the helicopter entered a low-G condition due to turbulence, inappropriate control inputs, or a combination of both.
- The low-G condition, probably in combination with inappropriate recovery control inputs resulted in extreme teetering of the main rotor and subsequent in-flight break-up.
Other findings
- No evidence was found to indicate that the helicopter was not capable of normal operation prior to the in-flight break-up.
- In helicopters with semi-rigid rotor heads, the circumstances leading to in-flight break-ups from mast bumping and extreme teetering are not well understood. Recorded cockpit imagery could provide valuable insight for understanding the effect that weather conditions and pilot input has in these occurrences.
Accident investigation:
 |
|
Sources:
https://www.9news.com.au/national/nsw-news-helicopter-crash-training-flight-near-marulan/e0204f90-2f62-4695-bf2c-34899e6de51d
https://www.canberratimes.com.au/story/7038994/two-people-die-in-helicopter-crash/
https://www.smh.com.au/national/nsw/two-dead-in-helicopter-crash-in-southern-highlands-20201203-p56k2x.html
del. 10jul2020.
https://flightaware.com/live/flight/VHHGU/history/20201202/0414Z/YGLB/L%20-34.80331%20150.08434
https://www.atsb.gov.au/publications/investigation_reports/2020/aair/ao-2020-061/
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Dec-2020 14:10 | gerard57 | Added |
| 02-Dec-2020 18:16 | gerard57 | Updated [Total fatalities, Narrative] |
| 02-Dec-2020 19:21 | Aerossurance | Updated [Location, Narrative] |
| 03-Dec-2020 02:20 | Geno | Updated [Time, Registration, Cn, Operator, Location, Departure airport, Destination airport, Source] |
| 03-Dec-2020 07:35 | Pineapple | Updated [Registration, Source] |
| 03-Dec-2020 09:44 | A.J.Scholten | Updated [Source] |
| 06-Apr-2022 05:38 | harro | Updated [[Source]] |
| 06-Apr-2022 05:39 | harro | Updated [Category] |
Corrections or additions? ... Edit this accident description
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