ASN Wikibase Occurrence # 179559
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: | Saturday 12 September 2015 |
| Time: | 09:56 |
| Type: |  Robinson R66 |
| Owner/operator: | London Rock Supplies Ltd. |
| Registration: | G-LROK |
| MSN: | 0581 |
| Year of manufacture: | 2015 |
| Engine model: | Rolls-Royce 250-C300/A1 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Denham Aerodrome, Buckinghamshire -
 United Kingdom
|
| Phase: | Take off |
| Nature: | Training |
| Departure airport: | Denham, Buckinghamshire (EGLD) |
| Investigating agency: | AAIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Robinson R66 G-LROK rolled over on take off from Denham Aerodrome,Gerrards Cross, Buckinghamshire. The helicopter was involved in an accident that left it on its side. The aircraft is registered to London Rock Supplies Limited. One of the two occupants onboard the aircraft received minor injuries. Damage to the main rotor blades, drive train, transmission bay, tail boom and windshield.
The student pilot had commenced training for his PPL(H) on the R44, in which he had flown solo, before changing to the R66 some 18 flying hours before the accident flight. On the day, he completed five dual circuits with his instructor. They then landed and the instructor exited the helicopter, to allow the student to conduct his first solo flight on the R66. As the student lifted into the hover, the helicopter rolled right and the rotors struck the ground. The helicopter came to rest on its side and the student, who sustained minor injuries, was able to vacate the cabin. The instructor, who was standing 50 yards away, commented that it appeared a dynamic rollover had occurred.
In 1982 the Robinson Helicopter Company issued Safety Notice SN-9, concerning dynamic rollover. It states:
‘A dynamic rollover can occur whenever the landing gear contacts a fixed object, forcing the aircraft to pivot about the object instead of about its own center of gravity…Once started, dynamic rollover cannot be stopped by application of opposite cyclic alone…Quickly applying down collective is the most effective way to stop dynamic rollover.’
Accident investigation:
 |
|
Sources:
1. AAIB: https://assets.digital.cabinet-office.gov.uk/media/56bc4578e5274a036900001f/Robinson_R66_G-LROK_02-16.pdf
2. CAA: https://siteapps.caa.co.uk/g-info/rk=LROK
3. https://www.pprune.org/rotorheads/567588-r66-its-side-denham.html
4. http://www.bucksfreepress.co.uk/news/13716608.Man_receives_first_aid_treatment_after_unsuccessful_helicopter_take_off/
5. http://www.robinsonheli.com/service_library/safety_notices/rhc_sn09.pdf
Media:
Firefighters from Gerrards Cross gave first aid to man after this helicopter came down on take-off this morning pic.twitter.com/Lq8xa4RQOE
— Bucks and MK Fire (@Bucksfire) September 12, 2015Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Sep-2015 17:38 | Aerossurance | Added |
| 14-Sep-2015 19:09 | APikesley | Updated [Date] |
| 14-Sep-2015 21:07 | Geno | Updated [Time, Operator, Total occupants, Location, Phase, Departure airport, Source, Narrative] |
| 15-Sep-2015 11:57 | Dr. John Smith | Updated [Nature, Source, Embed code, Narrative] |
| 15-Sep-2015 11:58 | Dr. John Smith | Updated [Source, Embed code, Narrative] |
| 03-Feb-2016 15:08 | Anon. | Updated [Damage] |
| 11-Feb-2016 17:24 | Dr.John Smith | Updated [Time, Location, Nature, Departure airport, Source, Narrative] |
| 11-Aug-2020 09:52 | Aerossurance | Updated [Location, Narrative] |
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