Went in August 1971 on a Wardair 707 charter from Manchester to Vancouver, I guess they were not too common then. Sat in the landside buffet which faced over the field, awaiting departure, the aircraft arrived inbound, probably positioning from Gatwick, and a whole group of enthusiasts who of course had taken pole position at the window seats nearly knocked over all the coffee cups as they saw it and ran out.
Wasn't any of you lot, by chance ....... ?