I had thought that an aircraft had to have enough fuel on board to return to it;s start point .
A colleague at work was on board the KL flight due to touch down at EDI this morning at 0905 , captain took 3 attempts to land in high winds , passengers said to screaming in terror , came on and said he might have to divert to GLA or NCL as they did;nt have enough fuel to return to AMS .