COMMITMENTS

As of December 31, 2014, the Company leased 76 aircraft and 29 spare engines with varying terms extending through 2024 and terminal space, operating facilities and office equipment with terms extending through 2033 under operating leases. The components of rent expense for the years ended December 31 are as follows (in millions):



	2014		2013		2012
Aircraft and engine rent	$	126.0	$	122.6	$	110.7
Other	10.3		11.7		9.2
Total rent expense	$	136.3	$	134.3	$	119.9

The Company has long-term maintenance agreements with an avionics equipment manufacturer and maintenance provider that has a guaranteed minimum annual flight hour requirement. The minimum guaranteed amount based on the Company's current operations is $2.6 million per year through December 2016 for the E145 family of aircraft and $10.3 million per year through December 2014 for the E170 family of aircraft.

The following table represents our maintenance agreements for engines, auxiliary power units ("APU") and other airframe components for our E140/145, E170/175 and Q400 aircraft:



	Expiration Date of Agreement:
Maintenance Agreements	E140/145	E170/175	Q400
Engines	December 2017⁽²⁾	March 2027⁽³⁾	June 2021⁽²⁾
APU	December 2016	July 2019	July 2021
Avionics	December 2017	April 2023	NA⁽¹⁾
Wheels and Brakes	December 2019	January 2022	August 2022 ⁽⁴⁾
Parts Pooling	December 2017	February 2027	July 2021
Emergency Slides	NA⁽¹⁾	December 2024	NA⁽¹⁾
Tires	NA⁽¹⁾	NA⁽¹⁾	July 2021
Propellers	NA⁽¹⁾	NA⁽¹⁾	July 2021

⁽¹⁾Agreements do not exist for the specified maintenance item for the related aircraft type.

⁽²⁾ Maintenance agreements for engines include life limited parts ("LLPs") for E140/145 and Q400 aircraft. As of

December 31, 2014 and 2013, we had maintenance deposits of $53.2 million and $36.6 million, respectively, for the future replacement of LLPs.


⁽³⁾	Maintenance agreements for engines on United and Delta E175 aircraft expire December 2018, US Airways E175 aircraft expire December 2022, and American E175 aircraft expire March 2027.


⁽⁴⁾	Q400 maintenance agreements do not include wheels.

Under these agreements, we are charged for covered services based on a fixed rate for each flight hour or flight cycle accumulated by the engines or airframes in our service during each month. The rates are subject to annual revisions, generally based on certain Bureau of Labor Statistics' labor and material indices. We believe these agreements, coupled with our ongoing maintenance program, reduce the likelihood of unexpected levels of engine, APU, avionics, wheels and brakes, emergency slides, and select rotable parts maintenance expense during their term. Certain of these agreements contain minimum guarantee amounts, penalty provisions for either the early removal of aircraft or agreement termination for activity levels below the minimums.

Total payments under these long-term maintenance agreements were $173.0 million, $163.8 million, and $119.4 million for the years ended December 31, 2014, 2013 and 2012, respectively.

As part of the Company's lease agreements, the Company typically indemnifies the lessor of the respective aircraft against liabilities that may arise due to changes in benefits from tax ownership or tax laws of the respective leased aircraft. The Company has not recorded a liability for these indemnifications because they are not estimable. The Company is responsible for all other maintenance costs of its aircraft and must meet specified return conditions upon lease expiration for both the air frames and engines. The Company recorded a liability for the return conditions of $2.3 million as of December 31, 2014 for maintenance commitments on three E190 aircraft that will be returned to the lessor in 2015.

Future minimum payments under non-cancelable operating leases are as follows for the years ending December 31 (in millions):



	Aircraft		Other		Total
2015	$	106.5	$	16.2	$	122.7
2016	101.6		15.1		116.7
2017	87.8		13.1		100.9
2018	77.1		12.0		89.1
2019	73.9		9.9		83.8
Thereafter	103.9		44.5		148.4
Total	$	550.8	$	110.8	$	661.6

As of December 31, 2014, the Company has leased eight E145 aircraft, three E170 aircraft, and three E190 aircraft to a foreign airline, and it has leased one E135 aircraft and three E145 aircraft to domestic airlines. As of December 31, 2014, the total amount of minimum rentals to be received in the future under non-cancelable leases is $104.0 million. During the years ended December 31, 2014, 2013, and 2012, the Company recognized $20.1 million, $18.7 million and $15.9 million, respectively, of lease income that is included in other revenue in the consolidated statements of operations.

As of December 31, 2014, the Company has firm orders to purchase 40 CS300 aircraft that have scheduled delivery dates beginning in early 2015 and continuing through 2017. In January 2014, Bombardier announced that the aircraft would not be expected into service until early 2016. The Company has stopped making pre-delivery deposit payments on these aircraft.

The Company also has a commitment for 47 Embraer E175 aircraft (of which 41 have been delivered as of December 31, 2014) under the American Eagle brand that have scheduled delivery dates currently and through the second quarter of 2015. In addition, the Company has a commitment for 55 Embraer E175 aircraft under the United brand that have scheduled delivery dates between the third quarter of 2015 and the third quarter of 2017. The Company also has a commitment to acquire 11 spare aircraft engines (of which three have been delivered as of December 31, 2014) and expects to take delivery of four engines in 2015, three engines in 2016, and one engine in 2017.

The following table displays the Company's future contractual obligations for aircraft and other equipment under firm order (in millions):



	Payments Due By Period

	2015		2016		2017		2018		2019		Total
Debt or lease financed aircraft under purchase obligations ⁽¹⁾	$	554.2	$	2,447.0	$	1,385.5	$	—	$	—	$	4,386.7
Engines under firm orders	24.6		21.0		7.0		—		—		52.6
Total contractual obligations for aircraft and engines	$	578.8	$	2,468.0	$	1,392.5	$	—	$	—	$	4,439.3

⁽¹⁾Represents delivery of CS300s based on estimated service date of early 2016.

The information in the table above reflects a purchase price of the aircraft at projected delivery dates.