Table 9: Change in Low-Cost Airline Maintenance Employees Per Aircraft and Percent of Maintenance Spending Outsourced* 2000-2007,,,,, ,2000,2005,2006,2007,Pct. Change 2000-2007 AirTran,,,,, Maintenance Employees,337,364,407,409,21.4 Maintenance Empl Per Aircraft,7.0,4.0,3.6,3.3,-52.9 Pct. Outsourced,39.2,35.0,48.5,48.4,9.2 Pts Allegiant**,,,,, Maintenance Employees,N/A,46,70,88,N/A Maintenance Empl Per Aircraft,N/A,4.0,6.4,3.1,N/A Pct. Outsourced,N/A,N/A,38.1,34.6,N/A Frontier,,,,, Maintenance Employees,231,334,363,418,81.0 Maintenance Empl Per Aircraft,12.8,7.4,7.7,7.7,-39.8 Pct. Outsourced,16.6,14.9,16.8,20.5,3.9 Pts JetBlue,,,,, Maintenance Employees,50,397,456,468,836.0 Maintenance Empl Per Aircraft,10.0,5.2,4.1,3.9,-61.0 Pct. Outsourced,6.8,40.6,44.2,45.7,38.9 Pts Southwest,,,,, Maintenance Employees,"1,146","1,657","1,643","1,682",46.8 Maintenance Empl Per Aircraft,3.5,3.8,3.6,3.5,0.0 Pct. Outsourced,60.0,50.9,56.2,60.5,0.5 Pts Spirit,,,,, Maintenance Employees,246,227,199,161,-34.5 Maintenance Empl Per Aircraft,10.3,7.1,6.2,4.6,-55.3 Pct. Outsourced,0.0,12.4,10.0,18.9,18.9 Pts "Source: Bureau of Transportation Statistics, P-10",,,,, * Percent of total maintenance spending that is contracted outside the airline,,,,, "** Allegiant did not meet the standard for reporting in 2000. The standard is operation of at least one aircraft with the capacity to carry combined passengers, cargo and fuel of 18,000 pounds – the payload factor – and annual operating revenue of more than $20 million.",,,,, ,,,,, ,,,,, ,,,,,