| Percent of Maintenance Expenses 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 | 2020 | ||
| American | 18.5% | 18.8% | 16.4% | 20.7% | 25.5% | 25.3% | 24.6% | 22.5% | 22.0% | 25.8% | 24.8% | 24.3% | 25.5% | 25.4% | 25.3% | 24.3% | 24.4% | 25.7% | 30.3% | 29.4% | 34.9% | 38.1% | 38.5% | 38.8% | 41.4% | 32.4% | |
| Continental | 45.5% | 45.1% | 48.6% | 41.8% | 46.9% | 46.5% | 40.3% | 35.2% | 39.2% | 42.6% | 46.2% | 48.1% | 49.2% | 47.7% | 44.5% | 42.2% | 46.6% | ||||||||||
| Delta | 12.5% | 19.8% | 17.3% | 23.7% | 24.4% | 21.0% | 23.6% | 25.9% | 23.8% | 23.9% | 34.9% | 43.9% | 36.2% | 31.0% | 25.9% | 39.3% | 38.3% | 41.5% | 41.8% | 36.7% | 41.1% | 42.9% | 45.8% | 53.7% | 59.8% | 39.2% | |
| Northwest | 18.5% | 22.1% | 24.0% | 26.6% | 26.4% | 24.4% | 28.0% | 27.5% | 36.7% | 34.9% | 56.8% | 72.0% | 73.6% | 68.9% | 60.7% | ||||||||||||
| United | 7.7% | 9.1% | 13.6% | 15.0% | 16.2% | 16.3% | 18.4% | 16.7% | 21.3% | 33.0% | 40.5% | 44.9% | 45.7% | 44.3% | 40.6% | 40.0% | 51.5% | 47.8% | 52.1% | 52.6% | 52.1% | 51.3% | 52.0% | 52.0% | 47.6% | 37.6% | |
| US Airways | 29.4% | 30.9% | 28.8% | 29.3% | 29.1% | 29.5% | 29.2% | 28.8% | 35.0% | 36.7% | 57.6% | 43.2% | 55.0% | 63.7% | 60.4% | 57.6% | 57.8% | 56.5% | 54.2% | 54.3% | 58.3% | ||||||
| America West | 48.1% | 74.1% | 73.5% | 74.4% | 73.7% | 73.1% | 67.8% | 68.6% | 67.3% | 64.0% | 69.0% | 68.3% | 67.0% | ||||||||||||||
| --sub Network | 19.1% | 22.2% | 22.8% | 25.4% | 27.5% | 26.7% | 27.1% | 26.0% | 28.9% | 32.5% | 40.8% | 43.8% | 44.4% | 43.3% | 39.0% | 37.8% | 40.9% | 41.2% | 43.6% | 41.8% | 43.7% | 43.6% | 44.9% | 46.6% | 47.1% | 35.4% | |
| Southwest | 68.5% | 67.9% | 66.0% | 67.2% | 67.1% | 64.8% | 62.2% | 62.8% | 59.0% | 58.8% | 56.3% | 56.2% | 60.4% | 61.3% | 61.7% | 60.1% | 59.0% | 59.8% | 59.7% | 58.2% | 56.2% | 51.7% | 52.8% | 53.6% | 50.2% | 42.6% | |
| AirTran | 28.7% | 16.6% | 49.6% | 54.6% | 41.3% | 47.2% | 50.5% | 54.2% | 67.0% | 67.9% | 69.4% | 72.4% | 74.5% | 70.7% | 76.7% | ||||||||||||
| jetBlue | 7.9% | 51.6% | 19.2% | 27.1% | 35.9% | 40.7% | 44.2% | 45.7% | 49.9% | 53.7% | 54.5% | 59.7% | 66.3% | 69.5% | 68.4% | 71.9% | 73.6% | 74.6% | 71.0% | 70.0% | 68.2% | ||||||
| Alaska | 57.0% | 55.6% | 55.6% | 54.3% | 61.6% | 62.7% | 54.7% | 58.9% | 56.9% | 58.0% | 76.6% | 56.6% | 57.0% | 54.7% | 56.0% | 55.9% | 53.3% | 52.1% | 56.5% | 51.0% | 51.1% | 48.2% | 52.0% | 62.8% | 59.6% | 63.2% | |
| Virgin America | 49.0% | 48.0% | 40.6% | 32.5% | 25.9% | 40.2% | 58.7% | 39.5% | 67.4% | ||||||||||||||||||
| Hawaiian | 75.2% | 78.3% | 78.1% | 80.2% | 86.1% | 81.6% | 81.1% | 75.4% | 69.0% | 64.9% | 66.8% | 67.9% | 71.6% | 74.5% | 74.1% | 74.7% | 78.6% | 79.1% | 78.1% | 78.4% | 78.7% | 74.5% | 71.6% | 75.5% | 71.4% | 59.9% | |
| --sub Hybrid | 67.6% | 67.4% | 66.2% | 64.3% | 62.2% | 64.8% | 62.1% | 60.4% | 56.3% | 56.3% | 58.7% | 56.7% | 59.7% | 61.1% | 61.8% | 61.5% | 61.3% | 61.5% | 62.2% | 61.2% | 61.3% | 58.2% | 60.3% | 61.1% | 57.7% | 53.5% | |
| Allegiant | 3.4% | 4.0% | 2.4% | 2.7% | 3.3% | 2.5% | 4.7% | 20.8% | 32.3% | 30.2% | 27.7% | 19.7% | 8.0% | 8.0% | 4.8% | ||||||||||||
| Frontier | 72.7% | 58.4% | 53.3% | 54.0% | 52.3% | 52.8% | 56.8% | 51.2% | 54.8% | 56.0% | 59.1% | 36.7% | 7.8% | 0.3% | 0.1% | 56.1% | 46.3% | 47.6% | 51.2% | 45.1% | 39.1% | 36.8% | 39.6% | ||||
| Spirit | 87.0% | 137.5% | 76.7% | 70.7% | 69.4% | 79.4% | 50.7% | 33.3% | 16.3% | 15.2% | 21.3% | 14.3% | 15.6% | 25.4% | 26.1% | 29.9% | 27.8% | 23.9% | 23.1% | 20.9% | 20.9% | 13.8% | |||||
| -- sub ULCC | 113.6% | 68.4% | 69.3% | 61.0% | 59.6% | 60.2% | 65.4% | 51.2% | 42.4% | 38.2% | 36.5% | 21.3% | 8.4% | 4.9% | 10.7% | 35.4% | 34.9% | 34.0% | 31.5% | 27.4% | 21.0% | 21.2% | 18.8% | ||||
| Total All Sectors | 22.7% | 26.1% | 26.4% | 28.9% | 31.2% | 30.8% | 31.0% | 30.0% | 33.0% | 36.4% | 43.6% | 45.8% | 46.9% | 46.4% | 43.3% | 42.1% | 44.4% | 45.3% | 47.8% | 46.0% | 47.8% | 46.9% | 48.0% | 49.6% | 49.2% | 39.6% | |
| Data Source: US DOT Form 41 via BTS, Schedule P6 & P52. | |||||||||||||||||||||||||||