An oil worker who died when a helicopter crashed off the coast of Norway has been laid to rest in his home town.

Iain Stuart, 41, from Laurencekirk in Aberdeenshire, was among 13 men who died when the Super Puma went down near Bergen on April 29.

His funeral was held at Laurencekirk Parish Church on Friday before he was laid to rest at the town's cemetery.

Air accident investigators believe a technical fault caused the crash, which happened after the helicopter's rotor blades detached in mid-air.

A preliminary report into the crash published on Friday by the Accident Investigation Board Norway (AIBN) said the accident was "not survivable".

The AIBN reported: "The recordings on the Cockpit Voice and Flight Data Recorder (CVFDR) showed that everything appeared to be normal until a sudden catastrophic failure developed in one to two seconds.

"The CVFDR recordings ended abruptly at the same time. There are no indications that flight crew actions were a factor in the accident."

Wreckage from the helicopter is being examined by investigators, while a "significant" sea and land search is being carried out to find further components.

Meanwhile, the European Aviation Safety Agency (EASA) has ordered checks on all EC225 Super Pumas before they are allowed to fly. A Civil Aviation Authority travel ban remains in place in the UK.

EASA said it believes the helicopter's blades came off when the main rotor hub detached from its gearbox.

It emerged after the crash that operator CHC had changed components on the helicopter a few days earlier after a warning light had gone off.

Norwegian Civil Aviation Authority legal adviser Hege Aalstad said the helicopter had both its gearbox and rotor head replaced in the months before the crash.