Percent of Non-Maintenance Expenses (Ex Fuel) Outsourced
NO ADJUSTMENTS MADE
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
American 10.7% 9.4% 9.3% 9.8% 9.7% 10.0% 9.6% 8.2% 10.8% 11.7% 12.1% 12.4% 12.5% 11.9% 12.1% 12.6% 11.6% 11.7% 12.9% 11.9% 9.7% 9.3% 8.8% 8.8% 8.6%
Continental 13.2% 12.4% 13.1% 12.6% 12.9% 12.7% 12.9% 13.5% 14.6% 10.2% 10.4% 10.5% 10.9% 10.7% 10.5% 10.7% 10.7%
Delta 10.7% 11.3% 12.6% 13.3% 13.3% 11.6% 10.0% 10.8% 8.5% 9.3% 10.8% 11.8% 12.2% 11.8% 11.6% 11.3% 11.2% 10.4% 11.2% 11.1% 11.4% 11.4% 11.7% 12.1% 11.0%
Northwest 9.7% 9.8% 10.5% 10.3% 11.0% 11.2% 10.4% 10.2% 10.7% 9.6% 11.1% 12.2% 14.0% 13.3% 15.3%
United 6.9% 7.2% 7.2% 8.2% 8.3% 8.5% 8.1% 7.5% 7.3% 8.5% 8.4% 10.5% 10.8% 9.8% 10.0% 11.0% 10.1% 6.9% 7.6% 8.5% 9.2% 10.1% 10.3% 11.2% 11.9%
US Airways 9.1% 8.9% 9.0% 9.6% 8.7% 8.1% 7.4% 7.7% 8.6% 8.6% 9.5% 11.5% 8.1% 14.9% 10.4% 10.3% 10.3% 10.2% 9.9% 9.8%
America West 11.4% 13.2% 13.6% 14.3% 13.8% 12.9% 13.3% 13.7% 13.0% 11.9% 7.2%                            
 --sub Network 9.7% 9.6% 9.9% 10.5% 10.5% 10.2% 9.6% 9.4% 9.8% 9.8% 10.4% 11.5% 11.5% 11.9% 11.5% 11.3% 10.9% 9.5% 10.2% 10.3% 10.1% 10.2% 10.2% 10.6% 10.4%
 Southwest  6.2% 6.2% 6.8% 7.0% 6.9% 7.1% 7.4% 7.6% 7.5% 7.6% 8.7% 8.8% 8.8% 9.0% 8.8% 9.2% 9.9% 10.1% 10.8% 10.4% 9.5% 10.0% 10.3% 10.0% 9.5%
 jetBlue  15.0% 14.2% 15.6% 12.9% 13.2% 14.0% 14.4% 15.0% 15.5% 15.6% 16.9% 16.8% 16.1% 16.3% 16.4% 17.1% 16.9% 16.1% 17.5% 16.2%
 AirTran  2.2% 2.4% 3.4% 6.2% 5.9% 6.0% 5.1% 4.6% 5.2% 5.6% 6.1% 6.0% 6.5% 7.5% 9.0%
 Frontier  15.7% 11.4% 8.9% 10.7% 11.4% 11.4% 8.8% 7.7% 7.7% 5.3% 4.7% 4.9% 4.9% 4.5% 5.5% 4.1% 4.5% 6.7% 8.6% 18.7% 19.6% 18.2% 17.4% 17.8% 19.0%
Virgin America                         11.9% 10.1% 19.2% 19.9% 18.0% 17.7% 18.2% 18.7% 24.4% 24.8% 14.8%    
 --sub LCC 6.4% 6.4% 6.7% 6.7% 6.9% 7.5% 7.7% 8.1% 7.9% 7.8% 8.7% 8.9% 9.2% 9.4% 9.9% 10.3% 10.9% 11.5% 12.2% 12.5% 12.5% 12.9% 12.3% 12.4% 11.9%
Alaska 9.1% 9.2% 9.3% 9.4% 9.6% 9.9% 9.8% 10.6% 9.9% 10.0% 12.4% 11.6% 24.7% 14.6% 9.6% 10.6% 9.7% 9.1% 9.6% 10.1% 10.4% 10.2% 10.6% 9.5% 9.0%
Hawaiian 10.1% 10.2% 10.1% 10.7% 10.1% 10.7% 12.5% 12.0% 11.0% 11.3% 11.6% 12.5% 14.1% 15.4% 13.9% 13.5% 13.0% 14.4% 14.9% 14.1% 13.8% 13.6% 14.7% 14.6% 15.1%
Spirit 8.1% 2.3% 0.5% 1.6% 11.1% 11.7% 12.4% 11.2% 10.7% 12.4% 13.6% 13.1% 18.5% 16.8% 16.3% 14.8% 15.5% 14.7% 19.9% 21.6% 23.0% 23.1% 24.9% 25.0% 26.9%
Allegiant                   2.5% 6.1% 9.9% 8.5% 7.4% 6.7% 7.8% 8.5% 7.0% 8.0% 9.3% 5.9% 5.2% 8.3% 9.8% 8.4%
 -- sub Other 9.3% 9.1% 9.1% 9.1% 9.9% 10.3% 10.7% 11.0% 10.3% 10.3% 12.1% 11.9% 21.0% 14.6% 11.1% 11.6% 11.0% 11.0% 12.2% 12.8% 13.0% 13.0% 14.0% 13.4% 13.7%
Total All Sectors 9.6% 9.4% 9.8% 10.3% 10.3% 10.0% 9.5% 9.3% 9.7% 9.7% 10.3% 11.2% 11.6% 11.7% 11.3% 11.2% 10.9% 9.9% 10.6% 10.8% 10.7% 10.9% 10.9% 11.2% 11.0%
Note: Shaded data means data appear questionable.  
Data Source:  US DOT Form 41 via BTS, Schedule P6 & P52.