OSLO A helicopter ferrying passengers from a Norwegian oil platform crashed in the North Sea on Friday, killing at least 11 of the 13 people on board, rescue officials said.
The 11 passengers and two crew on the flight from the Gullfaks B oil platform, operated by Statoil, were all Norwegian except for one British and one Italian national, according to the Rescue Coordination Centre for Southern Norway.
"The helicopter is completely destroyed," it said. After several hours searching for survivors, 11 bodies were found and the remaining two people were presumed dead.
Plumes of smoke rose from the scene in a stretch of sea with many small islands and debris could be seen on the rocks. Several witnesses told Norwegian media they saw the rotor separate from the helicopter while still in the air.
"While I looked up, the rotor loosened and disappeared towards the north," John Atle Sekkingstad told the website of local paper Bergens Tidende.
"After that, the helicopter turned north and I saw fire at the top of the helicopter, where the rotor had been attached. It caught fire before it crashed."
The main body of the aircraft was lying under water, while its rotor was found on a rocky outcrop 200-300 metres (yards) away, state broadcaster NRK said, quoting the rescue centre.
Oil worker Chris Andersen told NRK: "I saw the rotor separate .... It was horrible. There was a huge explosion that you could physically feel. You felt the vibrations."
The area, just west of Bergen, Norway's second-largest city, has frequent helicopter traffic to and from offshore oil installations. Weather conditions on the day were normal.
Norway's king and the prime minister expressed their condolences to the families of the victims.
"You are not alone in your sorrow," Prime Minister Erna Solberg, dressed in black, said in an address to the nation.
PRODUCTION, FLIGHTS HALTED
Statoil halted production at the Gullfaks B platform, a visibly upset company executive told a news conference.
"This is one of the worst accidents in Norwegian oil history," said Arne Sigve Nylund, Statoil's head of production in Norway, adding that the helicopter passengers worked for different companies but were all on assignments for Statoil.
"This is a heavy day ... Some of our colleagues will never come home," he said in a trembling voice.
The Norwegian Civil Aviation Authority immediately imposed a temporary flying ban on type of helicopter involved, a Eurocopter EC225LP, but said it was too early to determine the cause of the crash.
The British Civil Aviation Authority also suspended passenger flights in those aircraft.
Airbus Helicopters, a subsidiary of Airbus Group, which is what Eurocopter is now known as, said it was "deeply saddened by this tragedy."
"Safety is Airbus Helicopters' top priority and we are providing our full support to both the accident investigators as well as CHC. Airbus Helicopters teams are fully mobilized to understand the root cause of the accident," it said.
Now known as the H225 Super Puma, the aircraft is a long-range helicopter widely used in the oil and gas industry.
The last helicopter crash in the Norwegian oil industry, in 1997, involved a Super Puma in which 12 people died, according to the website of the Norwegian Accident Investigation Board.
The helicopter that crashed on Friday had seen its maintenance servicing delayed twice last year, an aviation authority official told Norwegian daily VG.
The aviation authority also said there had been problems with the helicopter model in 2012 "when errors in the main gear box were identified" but that the manufacturer had since produced a modification that was approved by the European Aviation Safety Agency. Airbus did not comment on that.
The flight was operated by CHC Helicopter, owned by U.S. private equity firm First Reserve. CHC Helicopter was not immediately able to comment when contacted by Reuters.
(Additional reporting by Terje Solsvik and Nerijus Adomaitis and by Cyril Altmeyer in Paris; Writing by Gwladys Fouche; Editing by Alistair Scrutton and Robin Pomeroy)
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Updated Date: Apr 29, 2016 23:46 PM