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Helikopter Service Flight 165

26 Jun 1978 · North Sea, Norway

Sikorsky S-61 · Structural failure

From Bergen Airport, Flesland (BGO) to Statfjord A, North Sea, Norway

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Event

Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
Event fatalities
18 · all aircraft and ground
Ground fatalities
Unknown
Occupants
Unknown
Survivors
0
InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
Unknown
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
Airline

Sikorsky S-61

Aircraft type
Sikorsky S-61
Category
Helicopter · from aircraft type
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
LN-OQS
Onboard fatalities
18
Route
From Bergen Airport, Flesland (BGO)To Statfjord A, North Sea, Norway

Approximate · Coordinates from the Wikipedia article; not checked against an investigation report.

From the Wikipedia article

Helikopter Service Flight 165 was a crash of a Sikorsky S-61 helicopter into the North Sea, 78 NM 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.

Text from the Wikipedia article “Helikopter Service Flight 165” (revision 1343209177, retrieved 2026-09-18) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out. Read the article

Sources

Wikipedia article: Helikopter Service Flight 165
Article
Helikopter Service Flight 165
Revision
1343209177 · 2026-03-12 · retrieved 2026-09-18
Wikidata
Q11991955
Licence
Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
Record
Wikipedia article "Helikopter Service Flight 165" (page 37059594, revision 1343209177)
Date
Wikipedia infobox: date
Place and country
Wikipedia infobox: site
Map position
Wikipedia article coordinates
Aircraft, operator and route
Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
Operation
flight number in the article title
Fatalities
Wikipedia infobox: aircraft fatalities
Ground fatalities
not stated in the Wikipedia infobox
Summary
Wikipedia infobox: summary
Source notes (1)
  • Wikipedia · Facts from the Wikipedia article's infobox and coordinates, not checked against an investigation report. Independent review pending.