As an aside to all this, I recall an incident many years ago now, when the pax were queuing on the tarmac (in the heat!) and the engineer tripped over someone’s briefcase. He was puzzled that the briefcase seemed to be screwed to the ground and called me to check. It weighed a ton and was full of gold jewellery. The courier seemed a fairly slight chap but actually was a weight-lifter. We had to get load spreaders for the hold and I have often wondered what would have happened had it gone into an overhead locker, which was the original intention.
Prober