PURCHASE COMMITMENTS AND CONTINGENCIES

Aircraft Purchase Commitments

Future aircraft purchase commitments at December 31, 2011 are estimated to total approximately $6.8 billion and include 100 B-737-900ER aircraft, 18 B-787-8 aircraft and nine previously owned MD-90 aircraft. The following table shows the timing of these commitments:



Years Ending December 31, (in millions)	Total
2012	$	215
2013	530
2014	745
2015	760
2016	760
Thereafter	3,810
Total	$	6,820

During 2011, we entered into an agreement with The Boeing Company to purchase 100 B-737-900ER aircraft with deliveries beginning in 2013 and continuing through 2018. We have obtained committed long-term financing for a substantial portion of the purchase price of these aircraft.

Our aircraft purchase commitments do not include orders for five A319-100 aircraft and two A320-200 aircraft because we have the right to cancel these orders.

Contract Carrier Agreements

During the year ended December 31, 2011, we had contract carrier agreements with nine contract carriers, including our wholly-owned subsidiary, Comair. Our third-party contract carrier agreements have expiration dates ranging from 2016 to 2022.

Capacity Purchase Agreements. During the year ended December 31, 2011, seven Contract Carriers operated for us (in addition to Comair) under capacity purchase agreements. Under these agreements, the Contract Carriers operate some or all of their aircraft using our flight designator codes, and we control the scheduling, pricing, reservations, ticketing and seat inventories of those aircraft and retain the revenues associated with those flights. We pay those airlines an amount, as defined in the applicable agreement, which is based on a determination of their cost of operating those flights and other factors intended to approximate market rates for those services.

The following table shows our minimum fixed obligations under these capacity purchase agreements (excluding Comair). The obligations set forth in the table contemplate minimum levels of flying by the Contract Carriers under the respective agreements and also reflect assumptions regarding certain costs associated with the minimum levels of flying such as the cost of fuel, labor, maintenance, insurance, catering, property tax and landing fees. Accordingly, our actual payments under these agreements could differ materially from the minimum fixed obligations set forth in the table below.



Years Ending December 31, (in millions)	Amount⁽¹⁾
2012	$	2,340
2013	2,420
2014	2,430
2015	2,400
2016	2,100
Thereafter	5,700
Total	$	17,390


⁽¹⁾	These amounts exclude Contract Carrier lease payments accounted for as operating leases, which are described in Note 8. The contingencies described below under “Contingencies Related to Termination of Contract Carrier Agreements” are also excluded from this table.

Revenue Proration Agreements. As of December 31, 2011, we had a revenue proration agreement with American Eagle Airlines, Inc. In addition, a portion of our Contract Carrier agreement with SkyWest Airlines, Inc. is structured as a revenue proration agreement. These revenue proration agreements establish a fixed dollar or percentage division of revenues for tickets sold to passengers traveling on connecting flight itineraries.

Contingencies Related to Termination of Contract Carrier Agreements

We may terminate without cause the Chautauqua agreement at any time and the Shuttle America agreement at any time after January 2016 by providing certain advance notice. If we terminate either the Chautauqua or Shuttle America agreements without cause, Chautauqua or Shuttle America, respectively, has the right to (1) assign to us leased aircraft that the airline operates for us, provided we are able to continue the leases on the same terms the airline had prior to the assignment and (2) require us to purchase or lease any aircraft the airline owns and operates for us at the time of the termination. If we are required to purchase aircraft owned by Chautauqua or Shuttle America, the purchase price would be equal to the amount necessary to (1) reimburse Chautauqua or Shuttle America for the equity it provided to purchase the aircraft and (2) repay in full any debt outstanding at such time that is not being assumed in connection with such purchase. If we are required to lease aircraft owned by Chautauqua or Shuttle America, the lease would have (1) a rate equal to the debt payments of Chautauqua or Shuttle America for the debt financing of the aircraft calculated as if 90% of the aircraft was debt financed by Chautauqua or Shuttle America and (2) other specified terms and conditions. Because these contingencies depend on our termination of the agreements without cause prior to their expiration dates, no obligation exists unless such termination occurs.

We estimate that the total fair values, determined as of December 31, 2011, of the aircraft Chautauqua or Shuttle America could assign to us or require that we purchase if we terminate without cause our contract carrier agreements with those airlines (the "Put Right") are approximately $134 million and $536 million, respectively. The actual amount we may be required to pay in these circumstances may be materially different from these estimates. If the Put Right is exercised, we must also pay the exercising carrier 10% interest (compounded monthly) on the equity the carrier provided when it purchased the put aircraft. These equity amounts for Chautauqua and Shuttle America total $25 million and $52 million, respectively.

Legal Contingencies

We are involved in various legal proceedings related to employment practices, environmental issues, antitrust matters and other matters concerning our business. We record liabilities for losses from legal proceedings when we determine that it is probable that the outcome in a legal proceeding will be unfavorable and the amount of loss can be reasonably estimated. We cannot reasonably estimate the potential loss for certain legal proceedings because, for example, the litigation is in its early stages or the plaintiff does not specify the damages being sought. Although the outcome of the legal proceedings in which we are involved cannot be predicted with certainty, management believes that the resolution of these matters will not have a material adverse effect on our Consolidated Financial Statements.

Credit Card Processing Agreements

Our VISA/MasterCard and American Express credit card processing agreements provide that no cash reserve ("Reserve") is required, and no withholding of payment related to receivables collected will occur, except in certain circumstances, including when we do not maintain a required level of unrestricted cash. In circumstances in which the credit card processor can establish a Reserve or withhold payments, the amount of the Reserve or payments that may be withheld would be equal to the potential liability of the credit card processor for tickets purchased with VISA/MasterCard or American Express credit cards, as applicable, that had not yet been used for travel. There was no Reserve or amounts withheld as of December 31, 2011 and 2010.

Other Contingencies

General Indemnifications

We are the lessee under many commercial real estate leases. It is common in these transactions for us, as the lessee, to agree to indemnify the lessor and the lessor's related parties for tort, environmental and other liabilities that arise out of or relate to our use or occupancy of the leased premises. This type of indemnity would typically make us responsible to indemnified parties for liabilities arising out of the conduct of, among others, contractors, licensees and invitees at, or in connection with, the use or occupancy of the leased premises. This indemnity often extends to related liabilities arising from the negligence of the indemnified parties, but usually excludes any liabilities caused by either their sole or gross negligence or their willful misconduct.

Our aircraft and other equipment lease and financing agreements typically contain provisions requiring us, as the lessee or obligor, to indemnify the other parties to those agreements, including certain of those parties' related persons, against virtually any liabilities that might arise from the use or operation of the aircraft or such other equipment.

We believe that our insurance would cover most of our exposure to liabilities and related indemnities associated with the commercial real estate leases and aircraft and other equipment lease and financing agreements described above. While our insurance does not typically cover environmental liabilities, we have certain insurance policies in place as required by applicable environmental laws.

Certain of our aircraft and other financing transactions include provisions, which require us to make payments to preserve an expected economic return to the lenders if that economic return is diminished due to certain changes in law or regulations. In certain of these financing transactions, we also bear the risk of certain changes in tax laws that would subject payments to non-U.S. lenders to withholding taxes.

We cannot reasonably estimate our potential future payments under the indemnities and related provisions described above because we cannot predict (1) when and under what circumstances these provisions may be triggered and (2) the amount that would be payable if the provisions were triggered because the amounts would be based on facts and circumstances existing at such time.

Employees Under Collective Bargaining Agreements

At December 31, 2011, we had approximately 78,400 full-time equivalent employees. Approximately 16% of these employees were represented by unions, including the following domestic employee groups.



Employee Group	Approximate Number of Active Employees Represented	Union	Date on which Collective Bargaining Agreement Becomes Amendable
Delta Pilots	10,850	ALPA	December 31, 2012
Delta Flight Superintendents (Dispatchers)	340	PAFCA	December 31, 2013
Comair Pilots	790	ALPA	March 2, 2011
Comair Maintenance Employees	280	IAM	December 31, 2010
Comair Flight Attendants	550	IBT	December 31, 2010

All of our agreements with workgroups at our airline subsidiary, Comair, are currently amendable. Comair is in discussions with representatives of the respective unions and we cannot predict the outcome of those discussions.

Labor unions periodically engage in organizing efforts to represent various groups of our employees, including at our airline subsidiary, that are not represented for collective bargaining purposes.

War-Risk Insurance Contingency

As a result of the terrorist attacks on September 11, 2001, aviation insurers significantly (1) reduced the maximum amount of insurance coverage available to commercial air carriers for liability to persons (other than employees or passengers) for claims resulting from acts of terrorism, war or similar events and (2) increased the premiums for such coverage and for aviation insurance in general. Since September 24, 2001, the U.S. government has been providing U.S. airlines with war-risk insurance to cover losses, including those resulting from terrorism, to passengers, third parties (ground damage) and the aircraft hull. The coverage currently extends through September 30, 2012, and we expect the coverage to be further extended. The withdrawal of government support of airline war-risk insurance would require us to obtain war-risk insurance coverage commercially, if available. Such commercial insurance could have substantially less desirable coverage than that currently provided by the U.S. government, may not be adequate to protect our risk of loss from future acts of terrorism, may result in a material increase to our operating expenses or may not be obtainable at all, resulting in an interruption to our operations.

Other

We have certain contracts for goods and services that require us to pay a penalty, acquire inventory specific to us or purchase contract specific equipment, as defined by each respective contract, if we terminate the contract without cause prior to its expiration date. Because these obligations are contingent on our termination of the contract without cause prior to its expiration date, no obligation would exist unless such a termination occu