Fantastic flying machines! I was a controller at Long Beach, Ca. years ago. N3A, Goodyear Columbia was based nearby just off the San Diego freeway. She would even call and get ILSs to LGB from us. That takes a looong time to vector her around the pattern for one. She would then do a low go down the runway, super pretty at night when all the neon lights would be on. The Captain once asked me if I’d like to see her do a “bag over”. (You gotta think about that one.)