 A similar Super Puma operated by Helikopter Service | |
| Accident | |
|---|---|
| Date | 8 September 1997 |
| Summary | Mechanical failure |
| Site | Norwegian Sea, Norway 66°04′25″N 008°34′21″E / 66.07361°N 8.57250°E |
| Aircraft | |
| Aircraft type | Eurocopter AS 332L1 Super Puma |
| Operator | Helikopter Service |
| ICAO flight No. | HKS451 |
| Call sign | HELIBUS 451 |
| Registration | LN-OPG |
| Flight origin | Brønnøysund Airport, Brønnøy, Brønnøy, Norway |
| Destination | Norne, Norwegian Sea, Norway |
| Passengers | 10 |
| Crew | 2 |
| Fatalities | 12 |
| Survivors | 0 |
On 8 September 1997 Flight 451, a Eurocopter AS 332L1 Super Puma, from the Norwegian helicopter operator Helikopter Service, crashed into the Norwegian Sea, 100 nautical miles (190 km; 120 mi) northwest of Brønnøysund, Norway. The aircraft was en route from Brønnøysund Airport, Brønnøy to Norne, an offshore Floating production storage and offloading vessel (FPSO). The accident was caused by a fatigue crack in a spline of a power transmission shaft connector, which ultimately caused the power transmission shaft to fail. All twelve people on board were killed in the crash.