Aberdeen Airport in the early eighties.
They used to have an open day where the spectators were on the East side and watched the normal take offs and landing plus what the local helicopter and fixed wing operators could organise. An essential part of the ground entertainment was a very large beer marquee which, in typical North Eastern Scotland fashion, was packed.
During the display ATC got a tip from London that a Concorde was doing a round Britain charter flight and Aberdeen persuaded it to do a fly pass. It was better than that, it did a roller.
It is the only time in history that a Scottish beer tent has been empty.