I remember this film. I was a Senior in High school. It was an okay pilot. With a little polish, I think it would have made a pretty good series. The real star of the show was Art Scholl's (RIP) Super Chipmunk stunt plane. I suspect that Mr. Scholl performed the stunts for the show. Since the show was on ABC, it seems that he may have done some contract work for them as the plane also appeared in an episode of the Six Million Dollar Man at about the same time.
The premise was a bit weak, but I believe in time it could have shaped up. It seems that ABC did a number of pilots in this fashion hoping for audience approval, I guess. Charlie's Angels was one of the few that sold, as did Starsky and Hutch.
I gave it an 8 because it had one of the best stunt planes ever built and did demonstrate some good stunts.