I'm pretty positive I saw this, but can't for the life of me remember why they were stewardesses dressed as nurses!
There was no end to these films in the 70s. I remember going to the drive-in one night and seeing:
The Big Bust Out The Big Doll House The Big Bird Cage
My wife said, "If I see one more pair of t*ts, I'm going to throw up!" There seemed to be a sadistic prison matron in each who exclaimed, "Alright ladies, strip!"