Maintenance Staff per Billion of Departed Seats
	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011
American	76	89	95	106	110	109	119	118	119	120	104	104	103	111	105	106	110
Continental	42	41	42	44	46	47	51	53	57	58	56	56	55	59	64	66	60
Delta	42	36	38	42	48	34	36	53	59	56	46	45	51	52	56	45	51
Northwest	45	44	49	61	55	52	51	47	30	26	15	3	3	3	19	-	-
United	30	14	97	100	102	103	106	53	75	49	47	46	47	67	48	53	55
US Airways	53	55	55	54	51	51	4	52	54	48	32	65	50	44	50	48	49
American West	27	14	14	15	23	21	28	32	32	32	30	-	-	-	-	-	-
--sub Network	47	44	63	68	70	67	63	65	69	62	53	54	54	61	62	64	66
Southwest	7	8	8	-	9	9	10	11	12	12	12	11	11	10	11	11	10
jetBlue	-	-	-	-	-	30	20	21	31	23	23	19	16	17	18	18	17
AirTran	-	-	33	36	30	30	30	24	21	19	15	14	13	12	11	12	11
Frontier	9	12	19	19	42	48	44	43	30	25	34	31	31	17	20	21	19
Virgin America	-	-	-	-	-	-	-	-	-	-	-	-	0	5	20	27	27
-- sub LCC	7	8	9	3	12	13	13	14	15	14	14	13	13	12	13	13	12
Alaska	23	1	22	1	1	26	29	27	25	38	8	6	27	29	31	29	27
Hawaiian	14	14	15	14	2	19	12	15	16	24	16	22	21	-	17	18	17
Allegiant	-	-	-	-	-	-	-	-	23	35	30	25	22	25	26	36	32
-- sub Other	19	6	19	6	1	22	22	22	22	33	11	12	25	19	25	26	24
Total All Sectors	42	38	55	57	60	57	53	55	56	51	43	41	41	45	45	46	47
* Total In-House Maintenance Employee Equivalents per billion of departed seats
Note: Shaded data means data appear questionable.
Data Source:  US DOT Form 41, Schedules P52 & P10