TEN people were killed when a helicopter crashed into a pub after the pilot “consciously took a risk” and ignored low fuel warnings, an inquiry has found.

Three crew members and seven customers died when the Police Scotland aircraft fell on to the roof of the Clutha bar in Glasgow on November 29, 2013.

A Fatal Accident Inquiry (FAI) into the tragedy concluded the crash happened after the helicopter’s engines flamed out sequentially while it was airborne, as a result of fuel starvation due to depletion of the contents of the supply tank.

The accident was caused by pilot Captain David Traill’s failure to ensure that at least one of the fuel transfer pump switches was set to on, the inquiry found.

In his determination, Sheriff Principal Craig Turnbull said the accident could have been prevented if the pilot had followed emergency procedures relating to low fuel warnings.

The inquiry heard five low fuel warnings were acknowledged during the G-SPAO helicopter’s final flight.

Turnbull said that by not carrying out the actions set out in the pilot’s checklist, Captain Traill “consciously took a risk in proceeding on the basis that the low fuel warnings were in some way erroneous”, with fatal consequences.

On the issue of why both fuel transfer pumps were switched off, he said: “Regrettably, when switching off the second (ie the aft) fuel transfer pump, Captain Traill appears to have overlooked the fact that he had previously switched off the forward fuel transfer pump approximately 11 minutes earlier.”

The report found both fuel transfer pump switches were in the off position when the low fuel warnings were triggered.

It said that had one or both of them been switched back on by Captain Traill at that point in time, the helicopter would not have crashed - however they were left off.

Turnbull said there is no evidence whatsoever to suggest Captain Traill deliberately caused the helicopter to crash, and that there is evidence to suggest he “made a valiant attempt to land G-SPAO after both engines had flamed out”.