ASN Wikibase Occurrence # 204976
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| Date: | Monday 11 December 1989 |
| Time: | 15:00 |
| Type: |  Hughes 269C |
| Owner/operator: | |
| Registration: | VH-AHQ |
| MSN: | 1190854 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 5km W of Gisborne, VIC -
 Australia
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | YMEN |
| YBSS | |
| Investigating agency: | BASI |
| Confidence Rating: |  Accident investigation report completed and information captured |
An examiner was testing a pilot in order to obtain a helicopter license when he closed the throttle without warning to simulate an engine failure. He had preselected what he considered to a be suitable area within autorotative distance for a practice forced landing. The pilot under examination was not expecting a practice forced landing and was not holding the collective lever, however he performed a normal entry into autorotation straight ahead. The main rotor RPM initially reduced to 390RPM. Instead of reducing to idle RPM, the engine stopped when the throttle was closed. The examiner immediately took control of the aircraft and diverted it towards the clearing. Rotor RPM was soon established to about 450RPM, however there was no response from the throttle. During the autorotative descent, the helicopter undershot the clearing. At the tops of 15m tall trees that were about 20 metres short of the clearing, the examiner flared the helicopter and applied some of the collective pitch to reduce the rate of descent. As the helicopter settled through the trees with about 20 knots forward speed, he pulled the remaining collective pitch. At about 5 metres above ground level the helicopter settled on to saplings at the edge of the clearing, which cushioned the descent and reduced the forward speed. The main rotor struck the ground and the helicopter came to rest on its right side about 8 metres into the clearing.
Accident investigation:
 |
|
Sources:
https://www.atsb.gov.au/publications/investigation_reports/1989/aair/aair198901561/
https://www.atsb.gov.au/media/30381/aair198901561.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Jan-2018 09:22 | Pineapple | Added |
Corrections or additions? ... Edit this accident description
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