In 2013, and following several helicopter accidents in the North Sea, the UK Civil Aviation Authority (CAA) instigated a review into offshore operations which culminated in a comprehensive report published as CAP 1145 (Safety review of UK offshore public transport helicopter operations in support of the exploitation of oil and gas). This report raised many actions and recommendations to improve the safety of offshore commercial helicopter operations. Subsequently, the CAA determined that a similar approach should be undertaken with regards to the onshore sector of helicopter operations.