Hi,
So I want there to be a retrofit option, like say if you have a dc-8 but you don't want to get a 747 and take it off the flights, which takes forever.
This retrofit option will cost a lot (Depending on fleet size) it advances the Avionics, adds winglets and adds TV's(Optional) It's somewhat like what Delta did (i think). Also this resets the age of the plane to, so you don't have to renew your fleet. BUT!!! there is a chance that you can overwork your employees and cause them to go on strike, AND you can't retrofit every aircraft of that specific fleet. EVERY AIRCRAFT IN THE GAME CAN BE RETROFITTED