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| Date: | Saturday 10 November 2001 |
| Time: | 12:54 |
| Type: |  Aerospatiale AS 332L Super Puma |
| Owner/operator: | CHC Scotia |
| Registration: | G-BKZE |
| MSN: | 2102 |
| Year of manufacture: | 1983 |
| Engine model: | Turbomeca Makila 1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | West Navion Drilling Vessel, West of Shetland -
 United Kingdom
|
| Phase: | Standing |
| Nature: | Offshore |
| Departure airport: | Aberdeen International Airport (ABZ/EGPD) |
| West Navion Drilling Vessel, 80 nm west of Shetland Islands | |
| Investigating agency: | AAIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The CHC Scotia helicopter, chartered by BP, rolled over on the West Navion Drilling Vessel, in Block 204/18b, 80 nautical mile west of Shetland. The aircraft commander was uninjured, but the co-pilot who was outside the helicopter sustained severe leg injuries. According to the AAIB:
"The aircraft had been contracted to transport ship's crew from Aberdeen to a drilling ship located about 80 miles to the west of the Shetland Isles. The ship was positioned to the north of a cold front lying between the north coast of Scotland and the West Coast of Norway.
The aircraft landed on the ship at 12:42 hours, with the captain as handling pilot, on a heading of 295 degrees. The captain remained on board the aircraft with the rotors running whilst the passengers disembarked and the co-pilot assisted with refuelling. At about 12:47 hours the ship's dynamic positioning system lost heading control and, unknown to the helicopter captain, the ship's heading started to drift slowly to the right.
As the ship's heading increased a list of approximately 1 degree to starboard developed and at 12:54 hours, with the aircraft heading now about 330 degrees, the aircraft toppled over to the right. As the main rotors impacted the deck they broke up and the co-pilot received a severe leg injury from flying debris."
Damage sustained to airframe: Per the AAIB report "The main rotor blades had become fragmented as they struck the helideck when the aircraft rolled over. Pieces of blade debris were recovered from various parts of the ship, although much of it undoubtedly went overboard. The rotor head, blade cuffs and pitch change linkages had also suffered severe damage.
The tail rotor assembly, including the gearbox, had become detached and was found on the deck at the rear of the aircraft. Four of the five blades had suffered major damage as a result of contacting the deck. The aircraft was otherwise substantially intact, with no major structural damage immediately apparent.
However, crushing damage to the right side of the fuselage had extended to the right windscreen, resulting in a gap that had allowed fire-fighting foam to enter the cockpit. The fuel tanks had remained intact, although some minor seepage from the fuel vent lines occurred for several days following the accident."
Accident investigation:
 |
|
Sources:
http://news.bbc.co.uk/1/hi/scotland/1709969.stm
https://www.gov.uk/aaib-reports/s4-2001-as332l-g-bkze-10-november-2001
https://www.gov.uk/aaib-reports/3-2004-eurocopter-as332l-super-puma-g-bkze-12-november-2001
https://www.caa.co.uk/our-work/publications/documents/content/factor-f29-2004/
https://aerossurance.com/safety-management/chc-as332l-west-navion-helideck-dp-accident/
Media:
Drillship West Navion's DP system switches to manual mode, its heading changes and a CHC AS332L rotors running on deck rolls over https://t.co/7arwzsj9nG#helideck #offshore #helicopter #accident #dynamicpositioning #helideckmotionsystem pic.twitter.com/SnVc9aYquV
— Aerossurance (@Aerossurance) November 10, 2024
Now UK CAA require a Helideck Motion System (HMS) with deck repeater lightshttps://t.co/7arwzsj9nG#helideck #offshore #helicopter #accident #dynamicpositioning #helideckmotionsystem pic.twitter.com/MMvOFfMlA5
— Aerossurance (@Aerossurance) November 10, 2024
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Jul-2016 12:26 | Dr.John Smith | Added |
| 19-Jul-2016 12:40 | Dr.John Smith | Updated [Date, ] |
| 19-Jul-2016 13:22 | Dr.John Smith | Updated [Location, ] |
| 08-Mar-2017 17:09 | TB | Updated [Time, Operator, Location, Source, ] |
| 18-Dec-2020 18:24 | Aerossurance | Updated [Location, Nature, Source, Narrative, Accident report, ] |
| 21-Aug-2022 12:24 | Aerossurance | Updated [Aircraft type, ] |
| 29-Mar-2024 14:46 | Aerossurance | Updated [Cn, Departure airport, ] |
| 02-Nov-2024 17:37 | Aerossurance | Updated |
| 02-Nov-2024 17:38 | ASN | Updated [Accident report, ] |
| 02-Nov-2024 18:04 | Aerossurance | Updated [Phase, Destination airport, Narrative, ] |
| 03-Nov-2024 11:25 | Aerossurance | Updated [Source, ] |
| 03-Nov-2024 12:01 | Aerossurance | Updated [Source, ] |
| 10-Nov-2024 10:37 | Aerossurance | Updated [Source, ] |
| 10-Nov-2024 11:37 | Aerossurance | Updated [Embed code, ] |
| 10-Nov-2024 11:50 | Aerossurance | Updated [Embed code, ] |
| 10-Nov-2024 11:58 | Aerossurance | Updated [Embed code, ] |
| 10-Nov-2024 12:09 | Aerossurance | Updated [Embed code, ] |
| 10-Nov-2024 12:10 | Aerossurance | Updated [Embed code, ] |
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