to reduce the carrying value of certain intangible assets based on their revised estimated fair values.

In accordance with SFAS 142, we apply a fair value-based impairment test to the net book value of goodwill and indefinite-lived intangible assets on an annual basis and, if certain events or circumstances indicate that an impairment loss may have been incurred, on an interim basis. The annual impairment test date for our goodwill and indefinite-lived intangible assets is October 1.

In evaluating our goodwill for impairment, we first compare our one reporting unit’s fair value to its carrying value. We estimate the fair value of our reporting unit by considering (1) our market capitalization, (2) any premium to our market capitalization an investor would pay for a controlling interest (“Control Premium”), (3) the potential value of synergies and other benefits that could result from such interest, (4) market multiple and recent transaction values of peer companies and (5) projected discounted future cash flows, if reasonably estimable. If the reporting unit’s fair value exceeds its carrying value, no further testing is required. If, however, the reporting unit’s carrying value exceeds its fair value, we then determine the amount of the impairment charge, if any. We recognize an impairment charge if the carrying value of the reporting unit’s goodwill exceeds its implied fair value.

We perform the impairment test for our indefinite-lived intangible assets by comparing the asset’s fair value to its carrying value. Fair value is estimated based on recent market transactions where available or projected discounted future cash flows. We recognize an impairment charge if the asset’s carrying value exceeds its estimated fair value.

 

At October 1, 2008, we performed an impairment test of our goodwill and indefinite-lived intangible assets, which resulted in no impairment charge. For both goodwill and indefinite-lived intangible assets, changes in assumptions or circumstances, including, but not limited to, (1) negative trends in our market capitalization, (2) volatile fuel prices, (3) declining passenger mile yields, (4) lower demand as a result of the weakening U.S. and global economy, (5) interruption to our operations due to an employee strike, terrorist attack, or other reasons and/or (6) consolidation of competitors within the industry, which are not offset by other factors such as improved yield or an increase in Control Premiums, could result in an impairment in the year in which the change occurs and in future years. For additional information about our accounting policy for goodwill and other intangible assets, see Notes 1 and 5 of the Notes to the Consolidated Financial Statements.

Long-Lived Assets . Our flight equipment and other long-lived assets have a recorded value of $20.6 billion on our Consolidated Balance Sheet at December 31, 2008. This value is based on various factors, including the assets’ estimated useful lives and their estimated salvage values. In accordance with SFAS No. 144, “Accounting for the Impairment or Disposal of Long-Lived Assets” (“SFAS 144”), we record impairment losses on long-lived assets used in