Here's another idea.
1. How about updating the systems of an aircraft? For example DC-10 modification to MD-10. 747-200 stretched upperdeck (SUD.
2. Changing your engines with newer ones (not after order, but if you already have your plane flying)
Why are these ideas unrealistic? Certainly for the first idea. This happened in real world as well. For example Fedex has updates their DC-10 to MD-10. KLM had updated the 747-200 to the SUD.
When I'm looking for a replacement for a certain aircraft, I have to switch between different browser pages. Is it possible to make some kind of comparison page, where you can select a certain amount of aircraft (let's say 3-5 planes).
What happened to this airport? In the game it only has 52 gates... Number of passengers is correct though. Is this maybe the number of gates available?
Atlanta Hartsfield-Jackson International Airport, KATL, Georgia, USA -> http://en.wikipedia....anta_Hartsfield