ASN Wikibase Occurrence # 314665
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| Date: | Monday 22 March 2010 |
| Time: | 05:05 LT |
| Type: |  Sikorsky S-92A |
| Owner/operator: | Bristow U.S. |
| Registration: | N921AL |
| MSN: | 920090 |
| Year of manufacture: | 2008 |
| Total airframe hrs: | 640 hours |
| Engine model: | GE CT7-8A |
| Fatalities: | Fatalities: 0 / Occupants: 14 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Galliano, Louisiana -
 United States of America
|
| Phase: | Standing |
| Nature: | Offshore |
| Departure airport: | Galliano, LA (2LS0) |
| Galliano, LA (2LS0) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Prior to takeoff, the helicopter's upper Environmental Control System (ECS) panel was not properly secured. The helicopter departed to an off-station platform and returned back to the home base. At an unknown time during the flight the ECS panel departed the helicopter, resulting in damage to one main rotor blade and one tail rotor blade. The helicopter's ECS and auxiliary power unit panels were both painted the same color, impeding visual inspection of the panels for proper closure.
Probable Cause: An unsecured access door, which departed the helicopter and damaged a main rotor blade and a tail rotor blade. Contributing to the incident was the helicopter's color scheme, which made visual inspection of the door difficult.
Accident investigation:
 |
|
Sources:
NTSB CEN10IA169
History of this aircraft
Other occurrences involving this aircraft
| 22 October 2010 | N921AL | Bristow US LLC | 0 | Gulf of Mexico | |
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 |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Jun-2023 19:14 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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