40-45 S80s by the end of the year = about 900 less F/As needed. But attrition runing at 50/month = 400 less F/As due to retirements. So overage is 500 F/As at the end of the year. 737s coming on line starting in 2009, 34 of them at staffing of 25 F/As per aircraft minimum = 850 F/As needed provided no more S80s retired in 2009.