Exhibit 12 AMERICAN AIRLINES, INC. Computation of Ratio of Earnings to Fixed Charges (in millions) Three Months Ended March 31, 2006 2005 Earnings (loss): Loss before income taxes $ (106) $ (171) Add: Total fixed charges (per below) 418 384 Less: Interest capitalized 7 22 Total earnings (loss) before income taxes $ 305 $ 191 Fixed charges: Interest $ 207 $ 177 Portion of rental expense representative of the interest Factor 206 204 Amortization of debt expense 5 3 Total fixed charges $ 418 $ 384 Coverage deficiency $ 113 $ 193 Note: As of March 31, 2006 American has guaranteed approximately $1.2 billion of AMR's unsecured debt and approximately $408 million of AMR Eagle's secured debt. The impact of these unconditional guarantees is not included in the above computation.