Report in Daily Telegraph filed at 9:06pm 16th December.
Not sure whether this has been fully covered in this forum before (so many posts!). But if the red "low fuel" light appeared without any prior warning, that could very easily explain why the engines suddenly died and the rotor wasn't turning?
However, the manufacturer Eurocopter has issued a safety alert to operators around the world warning that fuel gauge errors were found and repaired on “some" EC135 aircraft.
It said the quantity of fuel in the supply tanks could be over estimated and in the worst-case scenario a red “low fuel” warning could appear without any amber warning appearing first.
It has issued a safety information notice to all operators of the Eurocopter EC135 aircraft, warning that the system may not work properly and must be checked.
The fault was discovered by Bond Aviation Group last Wednesday evening - 12 days after the fatal crash in Glasgow - in a North West Air Ambulance aircraft.