The accident on Friday was the fifth in four years off the Scottish coast involving a Super Puma, a passenger helicopter manufactured by Eurocopter, part of the European aerospace giant EADS.
The body of the fourth victim was recovered today, police said.
"The fourth person was recovered from the wreckage a short time ago and we have deployed family liaison officers to support those who have lost loved ones. We are also working with the industry to help support all of those affected," said Angus MacInnes from Police Scotland.
The Super Puma AS332 L2 was travelling from the Borgsten Dolphin platform to Sumburgh airport on the Shetland archipelago when it came down three kilometres west of its destination on Friday.
"The two operators of Super Pumas in the United Kingdom yesterday voluntarily stopped operations," a spokesman for the Civil Aviation Authority (CAA), Britain's aviation regulator, told AFP.
The suspension by CHC and by fellow operator Bond of all four Super Puma variants currently in service follows a recommendation by the British offshore oil industry's Helicopter Safety Steering Group (HSSG).
It added: "HSSG will closely monitor the situation and will only recommend resumption of flights by one or more of the Super Puma variants when it considers that sufficient factual information is available to support the decision."
The CAA stressed that there had been no regulatory decision to ground Super Pumas, which would be the responsibility of the European Aviation Safety Agency.
Eurocopter did not immediately respond to the move, but earlier said that it was supporting the relevant authorities with their investigations.
Two of the 14 people rescued from the sea after the crash remain in hospital.
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