I have seen the Airplane yesterday.
There is one interesting ibservation. Modern comedies lack jokes. I mean it.

Modern comedies try to make the story into a joke, but that has 2 effects.
1) frequency of jokes goes down to 1/20th
2) since there remain only 3 jokes per movie, every joke gets 100 times more important, so noone dares to even make the jokes risky. And comedy without risk is just not working.