ASN Wikibase Occurrence # 70844
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| Date: | Monday 15 July 2002 |
| Time: | 16:15 LT |
| Type: |  Sikorsky S-61N-II |
| Owner/operator: | Bristow Helicopters opf HM Coastguard |
| Registration: | G-BBHM |
| MSN: | 61713 |
| Year of manufacture: | 1973 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Royal Marine Barracks Poole, Dorset -
 United Kingdom
|
| Phase: | En route |
| Nature: | Ambulance |
| Departure airport: | Portland (EGDP) |
| Portland (EGDP) | |
| Investigating agency: | AAIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
G-BBHM had been airborne for about 40 minutes on a SAR mission over Poole Harbour when the two rear crew members became aware of an unusual noise. Almost immediately, the pilots saw the ‘NO 2 ENG FIRE WARN’ light illuminate accompanied by the audio alert. The pilots commenced their emergency procedures. However, with the ‘FIRE’ light still illuminated and indications of hydraulic failures from both tactile and warning systems, the commander called for an immediate landing. After touchdown, the pilots shut down No 1 engine and the crew quickly vacated the helicopter.
G-BBHM was destroyed by fire shortly after they were clear. The time between the onset of the original fire warning and touchdown was 82 seconds.
The No 2 engine had suffered rapid deterioration of the No 5 (location) bearing of the free turbine, and severance of Engine Mounting Rear Support Assembly tube by the drive shaft. A severe fire, outside of the engine fire zone, was caused because the released engine oil was ignited either by the mechanical interference, or by contact with the hot engine exhaust duct.
Accident investigation:
 |
|
Sources:
1. https://www.gov.uk/aaib-reports/2-2004-sikorsky-s-61n-g-bbhm-15-july-2002
2. CAA: https://siteapps.caa.co.uk/g-info/rk=BBHM
3. https://www.pprune.org/rotorheads/287207-bristow-photos-7.html#post3498939 photos
4. https://publicapps.caa.co.uk/modalapplication.aspx?catid=1&pagetype=65&appid=11&mode=detail&id=1300 (CAA FACTOR)
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 31-Dec-2009 00:06 | TB | Added |
| 10-Jul-2010 10:02 | TB | Updated [Operator] |
| 03-Aug-2014 18:48 | Aerossurance | Updated [Nature, Destination airport, Source, Narrative] |
| 17-Aug-2014 18:08 | Aerossurance | Updated [Source] |
| 18-Feb-2015 21:02 | Dr. John Smith | Updated [Time, Nature, Departure airport, Destination airport, Embed code] |
| 31-Oct-2015 14:29 | harro | Updated [Embed code] |
| 10-May-2016 20:22 | Aerossurance | Updated [Time, Nature, Source, Narrative] |
| 22-Jul-2016 14:27 | Dr.John Smith | Updated [Source, Narrative] |
| 22-Jul-2016 14:28 | Dr.John Smith | Updated [Source] |
| 24-Jun-2017 11:03 | Aerossurance | Updated [Operator, Location, Departure airport, Destination airport, Source, Narrative] |
| 25-May-2020 19:59 | Rerenstein | Updated [Photo] |
Corrections or additions? ... Edit this accident description
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