Helikopter Service Flight 165
|Date||26 June 1978|
|Site||North Sea, Norway
|Aircraft type||Sikorsky S-61|
|Flight origin||Bergen Airport, Flesland, Bergen, Norway|
|Destination||Statfjord 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) northeast 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.
- "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" (PDF) (in Norwegian). Accident Investigation Board Norway. 17 January 1980. Archived from the original on 19 September 2012. Retrieved 19 September 2012.
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