Helikopter Service Flight 165
A Sikorsky S-61 similar to the accident aircraft
Date26 June 1978
SummaryStructural failure
SiteNorth Sea, Norway
61°01′N 002°48′E / 61.017°N 2.800°E / 61.017; 2.800Coordinates: 61°01′N 002°48′E / 61.017°N 2.800°E / 61.017; 2.800
Aircraft typeSikorsky S-61
OperatorHelikopter Service
Flight originBergen Airport, Flesland, Bergen, Norway
DestinationStatfjord A, North Sea, Norway

Helikopter Service Flight 165 was a crash of a Sikorsky S-61 helicopter into the North Sea, 78 nautical miles (144 km; 90 mi) northwest of Bergen, Norway, on 26 June 1978. The aircraft was en route from Bergen Airport, Flesland to Statfjord A, an offshore oil platform. The accident was caused by a fatigue crack in a knuckle joint, causing one of the rotor blades to loosen. All eighteen people on board were killed in the crash.[1]


  1. ^ "Rapport om luftfartsulykke i Nordsjøen den 26. juni 1978 ca. kl. 1115 med helikopter S-61 LN-OQS, tilhørende K/S Helikopter Service A/S" (in Norwegian). Accident Investigation Board Norway. 17 January 1980. Archived from the original on 19 September 2012. Retrieved 19 September 2012.