Table 2: System* Quarterly Operating profit/loss margin (in percent),,,,,,,
Network Carriers ,,,,,,,
Ranked by 2nd Quarter 2007 Margin ,,,,,,,
(Operating Profit/Loss as Percent of Total Operating Revenue),,,,,,,
2Q 2007 Rank,Network Carriers,2nd Quarter 2006 (%),3rd Quarter 2006 (%),4th Quarter 2006 (%),"1st
 Quarter 2007 (%)",2nd Quarter 2007 (%),2nd Quarter Operating Profit/Loss $(Millions)
1,US Airways,12.6,5.9,7.4,4.4,13.9,319
2,Northwest,9.2,11.1,3.7,7.2,11.3,364
3,United,5.1,6.6,0.3,-2.0,10.1,526
4,Alaska,6.3,0.5,-0.7,-2.7,9.6,76
5,Delta,8.0,3.0,-0.1,3.5,9.3,470
6,Continental,6.8,4.9,0.2,1.5,7.0,257
7,American,7.0,3.8,2.3,3.4,6.7,394
,Seven-Carrier Total,7.5,5.4,1.7,2.5,9.2,"2,406"
"Source: Bureau of Transportation Statistics; Form 41, Schedule P1.2 ",,,,,,,
* System = domestic + international ,,,,,,,
 ,,,,,,,