Flyboy767 From , joined Dec 1969, posts, RR:
Reply 1, posted (13 years 5 months 2 weeks 2 days 17 hours ago) and read 1606 times:
There have been many threads on this in the past that you can find this information on. Airlines choose the configuration of their exits based on personal preference and the number of exits required by FAA/JAA depending on how many classes, seats etc. the aircraft is being used for.