Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2012

Schedule II Valuation and Qualifying Accounts

Schedule II

Valuation and Qualifying Accounts

For the Years Ended December 31, 2012, 2011 and 2010

(In millions) Description	Balance at Beginning of Period		Assumed in Merger/ Acquisition Accounting Adjustment		Additions Charged to Costs and Expenses		Deductions (a)		Balance at End of Period
Allowance for doubtful accounts - UAL:
2012	$	7	$	—	$	12	$	6	$	13
2011		6		—		8		7		7
2010		14		—		4		12		6
Allowance for doubtful accounts - United:
2012	$	5	$	—	$	9	$	3	$	11
2011		5		—		5		5		5
2010		14		—		3		12		5
Allowance for doubtful accounts - Continental:
2012	$	2	$	—	$	3	$	3	$	2
2011		1		—		3		2		2
October 1 to December 31, 2010 (Successor Company)		5		(5)		1		—		1
January 1 to September 30, 2010 (Predecessor Company)		7		—		1		3		5
Obsolescence allowance—spare parts - UAL:
2012	$	89	$	—	$	40	$	4	$	125
2011		64		—		31		6		89
2010		61		—		215		212		64
Obsolescence allowance—spare parts - United:
2012	$	73	$	—	$	15	$	2	$	86
2011		61		—		16		4		73
2010		61		—		212		212		61
Obsolescence allowance—spare parts - Continental:
2012	$	16	$	—	$	25	$	2	$	39
2011		3		—		15		2		16
October 1 to December 31, 2010 (Successor Company)		121		(121)		3		—		3
January 1 to September 30, 2010 (Predecessor Company)		113		—		9		1		121
Valuation allowance for deferred tax assets - UAL:
2012	$	4,137	$	—	$	487	$	21	$	4,603
2011		4,171		—		333		367		4,137
2010		3,060		1,487		90		466		4,171
Valuation allowance for deferred tax assets - United:
2012	$	2,614	$	—	$	460	$	6	$	3,068
2011		2,624		—		82		92		2,614
2010		2,977		—		30		383		2,624
Valuation allowance for deferred tax assets - Continental:
2012	$	1,434	$	—	$	201	$	200	$	1,435
2011		1,384		—		289		239		1,434
October 1 to December 31, 2010 (Successor Company)		362		1,125		2		105		1,384
January 1 to September 30, 2010 (Predecessor Company)		563		—		—		201		362

(a) Deduction from reserve for purpose for which reserve was created.