The audit was conducted from 9 to 12 May 2023 with assistance from the Civil Aviation Authority Norway.


The objective of the audit was to ensure that the responsible parties are working systematically to reduce the risk associated with helicopter operations at COSL’s offshore facilities. In addition, we wanted to verify the management of helideck operations on board COSLPromoter.


We identified three non-conformities during the audit. These concerned:

  • Person weight and the capacity of rescue equipment
  • One helideck access barred
  • Sound level in area for emergency response management

We also identified one improvement point concerning helideck maintenance.

On the helideck, there were nine non-conformities/observations. 

What happens now?

We have asked COSL Drilling to report to us by 1 September 2023 on how the non-conformities will be addressed, and to give us their assessment of the improvement point identified.