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Glasgow helicopter crash: No engine or gearbox failure

9 December 2013 Last updated at 17:01 GMT

Investigators have found no evidence of a "major" engine or gearbox failure in their initial report into the cause of the helicopter crash in Glasgow, which killed nine people.

The BBC's Kevin Keane said the Air Accidents Investigation Branch has not concluded what caused the helicopter to crash into the Clutha pub.

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