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ASN Wikibase Occurrence # 180422
Last updated: 11 October 2021
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Time:20:23 LT
Type:Silhouette image of generic EC55 model; specific model in this crash may look slightly different
Eurocopter EC 155B1
Registration: OY-HJJ
MSN: 6662
Fatalities:Fatalities: 0 / Occupants: 10
Other fatalities:0
Aircraft damage: None
Location:Clipper Field, Southern North Sea -   United Kingdom
Phase: Take off
Departure airport:Clipper Offshore Installation
Destination airport:EGSH
Investigating agency: AAIB
After take-off from a Shell offshore platform at night, the helicopter entered a series of extreme pitch excursions. This resulted in the airspeed reducing below 20 kt, and start of a descent. The crew were eventually able to recover to normal flight. The helicopter had descended to within approximately 50 feet of the sea surface. It was found that the helicopterís flight path was consistent with inappropriate control inputs.

The investigation concluded that a combination of technical and organisational factors had pre-disposed the flight crew to believing that the helicopter was not performing correctly, which led them to depart from normal operating parameters. This resulted in the crew rapidly becoming disorientated to the extent that their ability to control the helicopter safely was compromised. Several safety actions have been taken by the helicopter operator.


Accident investigation:
Investigating agency: AAIB
Status: Investigation completed
Download report: Final report


Photo of OY-HJJ courtesy

Den Helder - De Kooy (EHKD / DHR)
7 August 2019; (c) Bart Hoekstra

Revision history:

15-Oct-2015 18:35 jevage Added
23-Sep-2016 18:52 Aerossurance Updated [Aircraft type, Location, Departure airport]
26-Sep-2016 18:07 Aerossurance Updated [Time, Source, Narrative]
26-Sep-2016 18:09 Aerossurance Updated [Aircraft type]
26-Sep-2016 18:13 Aerossurance Updated [Narrative]

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