Sounds like maybe you bought (or sold) at the wrong time. Air Tran stock is up from under $4 at the end of the 2nd qtr of 2002, to over $20.50 as recently as last week. At last check, it is around $17.50, and was only down $.66 today. Besides, I wouldn't think that a change of just over 3.6% would translate into "lotta bucks", or be a source of panic. It has certainly performed well over the past 12-14 months.
Who knows what the 737s will do for the stock price (although I'm sure there are plenty of people who will tell you they know the answer to this question). Besides, I wouldn't think this is the greatest place for advice on airline stocks. However, in general, over the past few months, airline stocks have been doing quite well. What does the future hold? If I (or anyone else) knew the answer to that, I sure wouldn't be wasting my time here.