FYI, Delta told Comair we had too many 50 seaters. They told us we were going to park 50s until our fleet was down to 44 aircraft - mostly 700/900s.

18 months later, just as we passed the 50 airplane mark on our way to 44, Delta announced that we would not be efficient with just 44 aircraft, and that they were shutting us down.

On the other hand, Compass had a fleet of 36 aircraft for years. Of course they don't have 15-year Captains either.