I remember them. They had an...interesting buisness model. First they started a hub in Columbia, SC and tried to fly to the big airports on a route that the mainline carriers neglected. Since they only had a few planes, to start a bunch of cities they decided to add a bunch of tag-ons. You might be flying from Columbia to Jacksonville, and they would sell you a ticket that said it was nonstop, but the plane would make stops in 3 cities on the way down there. I'm sure people who saw how long the trip time was knew there would be stops, but 3 seems kinda of excessive. They also started routes in the Northeast with one airplane in a route network not even connected to their Columbia network. People in the Northeast couldn't even access most of Air South's cities as a result. When they weren't making money, they changed their buisness model and tried to serve smaller markets from big established hubs, usually in direct competition from legacy carriers. They also introduced a "Fly Three Fly Free!" frequent flyer program. They were bleeding money, and finally a 737-200 got stranded at an out station and needed a new engine, they had their final blow. They couldn't afford a new engine, so the plane sat there, and they canceled over 1/4 of their flights everyday for weeks creating a nightmare for their reservations. They shut down shortly afterwards.