From the BBC Website
Clutha helicopter crash: No mechanical fault found
Investigators have found no evidence of engine or gearbox failure in the police helicopter which crashed into a busy pub in Glasgow killing nine people.
Preliminary findings from the Air Accidents Investigation Branch (AAIB) found the main and tail rotors were not rotating at the time of impact.
The report also stated the Police Scotland helicopter had about 95 litres of fuel when it crashed on The Clutha.
The three crew and six people in the bar died in the crash on 29 November.
The report said that the helicopter took off at 20:45 with 400kg of fuel on board.
It stayed over an area of Glasgow's south side for about 30 minutes before making a short 10 minute foray over Dalkeith in Midlothian, some 38 nautical miles away.
The helicopter was granted permission to re-enter Glasgow air space at 22:18.
The report said: "No further radio transmissions from the pilot were received. Radar contact with the helicopter was lost at 22:22.
"Around this time the helicopter was seen and heard by a witness who described hearing a noise like a loud "misfiring car".
The report continued: "He then saw the helicopter descend rapidly. It crashed through the roof of The Clutha Bar, a single storey building on Stockwell Street in central Glasgow."
Last edited by Sven Sixtoo; 9th Dec 2013 at 16:34.
Reason: add aaib link, then remove when aaib pulled it to publish corrected version