ASN Wikibase Occurrence # 168938
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| Date: | Friday 22 October 2010 |
| Time: | |
| Type: |  Sikorsky S-92A |
| Owner/operator: | Bristow US LLC |
| Registration: | N921AL |
| MSN: | 920090 |
| Year of manufacture: | 2008 |
| Fatalities: | Fatalities: 0 / Occupants: 14 |
| Aircraft damage: | Minor |
| Location: | Gulf of Mexico -
 United States of America
|
| Phase: | En route |
| Nature: | Offshore |
| Departure airport: | Air Logistics Galliano Heliport (2LS0) |
| Walker Ridge 206 offshore installation | |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
Prior to takeoff, the helicopter's upper Environmental Control System (ECS) panel was not properly secured. The helicopter departed to an offshore platform and returned then back to the home base. At an unknown time during the trip the ECS panel departed the helicopter, resulting in damage to one main rotor blade and one tail rotor blade. The pilot reported the helicopter entered moderate turbulence fifteen minutes into the flight. No unusual characteristics or noises were reported during the flight. The ECS panel has not been recovered, and it is unknown when the panel separated from the helicopter. Damage was found during a post-flight inspection.
The helicopter's ECS and auxiliary power unit panels are on the 'upper deck' and were both painted the same colour, impeding visual inspection of the panels for proper closure. As a result of the incident the company applied contrasting paint to help detect if the doors are not properly secured.
Sources:
https://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20100323X10126&key=1
http://dms.ntsb.gov/public%2F50000-50499%2F50108%2F452862.pdf (photo)
History of this aircraft
Other occurrences involving this aircraft
| 22 March 2010 | N921AL | Bristow U.S. | 0 | Galliano, Louisiana | |
min |
| 20 September 2011 | LN-ONW | Bristow Norway AS | 0 | North Sea |  |
non |
| Oil and gas | ||||||
| 4 October 2013 | LN-ONW | Bristow Norway AS | 0 | Yme Offshore Installation, North Sea, 120nm SW of Stavanger | |
min |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Aug-2014 19:10 | Aerossurance | Added |
Corrections or additions? ... Edit this accident description
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