Ponch didn't seem to have a fear of flying in the episode "Career Day " the 5th episode of S1. He begged to go up the the chopper to avoid desk duty. Furthermore he seemed to enjoy the ride.
Jenilee Harrison appears (in a speaking role) as one of a group of L.A. Rams cheerleaders. She actually was a Rams cheerleader at the time.
Both Jon's apartment and Carol and Kim's apartment appear to share the very same layout and style,as well as the same hallway.