Table 20: Regional Airlines System* Passenger Revenue Yield ,,,,,,, Regional Airlines Ranked by 1st Quarter 2008 Revenue Yield (Cents Per RPM) ,,,,,,, (Passenger Revenue per Revenue Passenger Mile in cents),,,,,,, 1Q 2008 Rank,Regional Airlines,1st Quarter 2007 ,2nd Quarter 2007 ,3rd Quarter 2007,4th Quarter 2007 ,1st Quarter 2008 ,1st Quarter Passenger Revenue $(Millions) 1,Comair,26.4,23.6,24.3,27.1,31.5,335 2,American Eagle,25.1,23.3,22.6,25.7,28.4,507 3,Horizon,25.0,23.9,23.0,24.6,26.2,172 4,Atlantic Southeast,22.7,21.4,20.6,22.9,24.0,356 5,Mesa,18.4,17.5,17.8,19.6,20.9,248 6,SkyWest,18.5,17.3,16.6,17.9,19.0,515 7,ExpressJet,17.9,16.6,17.6,15.7,16.7,437 ,Seven-Carrier Total,21.1,19.7,19.6,20.8,22.4,"2,556" Source: Form 41; Schedule P1.2. T100; T2 Data,,,,,,, * System = domestic + international ,,,,,,, ** Comair failed to report financial data for the first quarter of 2008.,,,,,,, ,,,,,,,