Table 3: Quarterly Domestic Operating profit/loss margin (in percent),,,,,,, Low-Cost Carriers ,,,,,,, Ranked by 2nd Quarter 2006 Margin ,,,,,,, (Operating Profit/Loss as Percent of Total Operating Revenue,,,,,,, 2Q 2006 Rank,Low-Cost Carriers,2nd Quarter 2005 (%),3rd Quarter 2005 (%),4th Quarter 2005 (%),1st Quarter 2006 (%),2nd Quarter 2006 (%),2nd Quarter Operating Profit/Loss $(Millions) 1,Southwest,11.5,13.7,8.2,4.9,16.4,401 2,AirTran,5.3,0.3,0.9,-1.1,10.3,54 3,JetBlue,9.3,3.2,-4,-5.1,7.7,47 4,America West,3.4,-6.2,-16.5,9,5.4,53 5,Frontier,-0.2,5.2,-5.5,-3.9,4.2,12 6,Spirit,-10.7,-14.2,-22.3,-7.3,-3.2,-4 7,ATA,-38.9,-81.4,53.8,-38.7,-21.1,-23 ,Seven-Carrier Total,5.3,2.1,1.2,2.2,10.6,541 "Source: Bureau of Transportation Statistics; Form 41, Schedule P1.2",,,,,,,