Table 2: System* Quarterly Operating profit/loss margin (in percent),,,,,,, Network Carriers ,,,,,,, Ranked by 3rd Quarter 2007 Margin ,,,,,,, (Operating Profit/Loss as Percent of Total Operating Revenue),,,,,,, 3Q 2007 Rank,Network Carriers,3rd Quarter 2006 (%),4th Quarter 2006 (%),1st Quarter 2007 (%),2nd Quarter 2007 (%),3rd Quarter 2007 (%),3rd Quarter Operating Profit/Loss $(Millions) 1,Northwest,11.1,3.7,7.2,11.3,13.2,460 2,Alaska,0.5,-0.7,-2.7,9.6,12.8,112 3,United,6.6,0.3,-2.0,10.1,11.5,636 4,US Airways,5.9,7.4,4.4,13.9,10.7,243 5,Delta,3.0,-0.1,3.5,9.3,8.0,422 6,Continental,4.9,0.2,1.5,7.0,6.6,250 7,American,3.8,2.3,3.4,6.7,4.5,265 ,Seven-Carrier Total,5.4,1.7,2.5,9.2,8.8,"2,387" "Source: Bureau of Transportation Statistics; Form 41, Schedule P1.2 ",,,,,,, * System = domestic + international ,,,,,,,