David Miller, deputy chief inspector of the Air Accidents Investigation Branch (AAIB), said the helicopter made a vertical descent into the Clutha bar in Glasgow and he confirmed the pilot made no mayday call.
The helicopter did not have a flight data recorder
It did, however, have electronic systems on board which may have important recorded data
Nothing detached from the craft in flight before the accident
And there is nothing to connect the incident with any previous accidents in the North Sea