ASN Wikibase Occurrence # 177561
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| Date: | Sunday 28 June 2015 |
| Time: | 15:00 |
| Type: |  Robinson R22 BETA |
| Owner/operator: | Helidoc Pty Ltd |
| Registration: | VH-RBO |
| MSN: | 0810 |
| Year of manufacture: | 1988 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Buchanan Downs Station, Daly Waters, NT -
 Australia
|
| Phase: | Approach |
| Nature: | Survey |
| Departure airport: | Buchanan Downs Station, Daly Waters, NT |
| Buchanan Downs Station, Daly Waters, NT | |
| Investigating agency: | ATSB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
When at about 100 feet above ground level and an airspeed of 40 knots, the pilot conducted a turn into wind. As the helicopter turned, the pilot received a low rotor rpm warning. The helicopter collided with terrain and rolled onto its side, resulting in substantial damage. The pilot sustained minor injuries. According to the following summary from the official ATSB report into the accident:
"On 28 June 2015, at about 15:00 Central Standard Time (CST), a Robinson R22 helicopter, registered VH-RBO, took off from a property near Daly Waters, Northern Territory, for a local flight including inspection of bores on the property. The temperature was about 30 °C with a south-easterly wind at 10-15 knots. After flying for about 20 minutes, the pilot, who was the sole occupant of the helicopter, landed to open a gate. The pilot selected the governor off, then exited the helicopter, leaving the engine running. The pilot then re-boarded the helicopter and took off.
After a further 5 to 10 minutes of flight, when at about 100 ft above ground level, and an airspeed of 40 knots, the pilot conducted a turn to the south. The low rotor revolutions per minute (RPM) warning horn sounded. The pilot immediately wound the throttle fully open, and lowered the collective to try to regain rotor RPM. The helicopter continued to descend. The pilot attempted to flare the helicopter when low to the ground. The main rotor blades collided with tree branches. The helicopter landed heavily, the skids dug in to the soil and the helicopter rolled onto its side. The pilot sustained minor injuries and the helicopter sustained substantial damage.
Final report says “The Robinson Helicopter Company Safety Notice SN-24 states that rotor stall due to low RPM causes a very high percentage of helicopter accidents. These mostly occur close to the ground during take-off and landing. Safety Notice SN-10 reminds pilots to have their ‘reflexes conditioned so they will instantly add throttle and lower collective to maintain RPM in an emergency’.”
Accident investigation:
 |
|
Sources:
1. http://www.atsb.gov.au/publications/investigation_reports/2015/aair/ao-2015-071.aspx
2. http://helihub.com/2015/06/28/28-jun-15-vh-rbo-robinson-r22-daly-waters-australia/
3. http://www.planetrace.co.uk/r22_0501-1000_29.html
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Jul-2015 07:26 | Pineapple | Added |
| 18-Oct-2016 16:22 | Dr.John Smith | Updated [Time, Location, Nature, Departure airport, Destination airport, Source, Narrative] |
| 07-Jun-2022 12:27 | Ron Averes | Updated [Location] |
Corrections or additions? ... Edit this accident description
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