An eyewitness has described the moment a helicopter fell "like a torpedo" into the North Sea, claiming 16 lives, including that of a man from Norwich.
The account was given on the first day of a fatal accident inquiry (FAI) almost five years after the Super Puma plunged into water off Aberdeenshire
Lidvar Olav Hildre, a ship's mechanic, was painting a railing on board the Normand Aurora, a platform supply boat sailing to Norway.
He heard a helicopter making a "normal buzzing noise" above the ship.
"Apart from the helicopter noise I didn't hear anything else - then suddenly there was silence," he said in a statement to police which was read out at the inquiry in Aberdeen.
"This made me look into the air, as this was unusual, and I saw on the starboard side of us an oblong shape falling like a torpedo towards the sea."
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The Met Office has issued a yellow cold weather alert and there's the risk of snow in places later on Boxing Day.
Mostly dry and bright, but chilly. Frost tonight.
Most places will see bright or sunny spells through the day, but with a few showers around, especially during the morning.