Originally Posted by hair-on-fire
You really think that American's financial problems were based on them having to buy a couple extra tow bars and teach the ground crews the difference between a MD80 and a 757?
While you are correct that different aircraft size (meaning seats available) permits a carrier to offer the properly sized aircraft in terms of the market requirements for different times of the day, SWA can do that with their various B737 models and save a whole lot of $$$ in the process.
That's a big advantage and credit for that must go to their management.