Watched Airport 1975 the other day, it was on Legend or something, I'd seen it as a kid in the cinema so watched for nostalga. Quite a few moments when I laughed thinking of the Airplane scenes, like the stewardess playing the guitar or Captain Kramer being a micky take of Heston. I think it holds up pretty well as a slapstick kind of comedy and it led to Police Squad being made which I loved, but you're right how people and times change, we tend these days to appreciate more sophisticated comedies for their word play.