Wrong impression i'm afraid, all I'm saying is that it is like any other low fuel event. I used to work closely with the operation for many years until recently and can't think of any other fuel emergencies, but it could potentially happen to any airline, anytime, usually for reasons outwith the crews control. I was pointing out the reason why Aberdeen is always the preffered diversion after the Shetlands. Fuel will be calculated to do the trip, divert, and extra, but we all know that occasionally that extra may not be enough for some reason or another.. I'm sure it happens to many orbiting in the vicinity of Heathrow.... There are times where the 146's would go around at Scatsta and return direct to Aberdeen if Sumburgh was marginal. They'd only try Sumburgh if they had plenty of fuel on board to get back to Aberdeen if needed - no risks taken, but I'm sure there's no one out there that would really doubt that anyway!!!!! (and a lot of income is wasted on fuel trying to get into Shetland!!!!!!)