Leonardo AW139 crash near Viscount Platform, North Sea, United Kingdom

The crew approached and landed on what they mistakenly believed to be the correct offshore platform. However, the crew had not appreciated that the planned destination had been changed and, in part, this happened because certain platforms can be referred to using different identifiers. When the crew realised they had landed on the wrong, unmanned platform, they lifted off and continued to the correct platform without further incident. An internal investigation by the helicopter operator recommended several actions which may be implemented to prevent such an incident recurring. This AAIB report also provides information concerning activities being undertaken across the offshore helicopter industry, by a trade association, to prevent Wrong Deck Landings (WDLs). A correction was issued concerning this report prior to publication. The online version of the report was corrected when published on 14 December 2017. Agusta AW139, G-CIPW 12-17 Agusta AW139, G-CIPW Correction 01-18