Blimey, 30,000 ft in a Hastings !
I was transiting through Nigeria in the mid/late sixties and we met the Minister of Aviation. He was wearing a uniform which didn't fit him very well (possibly belonging to his deposed predecessor) but he was wearing an S
brevet
Apparently he'd been a Sergeant Siggy on the Hastings Met Flight - I think he said they operated out of Aldergrove