Not at all dangerous, he would have had his anti-collision beacons on and would therefore be safe from everything! Apparently he had a jerrycan in the cabin with a hose leading to the fuel line. He had just bought it (locally) and was taking it home when he dropped into the pub for a 'traveller'. Pretty stupid thing to do - but pretty bloody funny too. Imagine the 'legend' status he will have for the rest of his life!