Exhibit 12 AMERICAN AIRLINES, INC. Computation of Ratio of Earnings to Fixed Charges (in millions) Three Months Nine Months Ended September 30, Ended September 30, 2005 2004 2005 2004 Earnings (loss): Earnings (loss) before income taxes $(161) $ (225) $(291) $(420) Add: Total fixed charges (per below) 399 372 1,150 1,112 Less: Interest capitalized 12 20 58 56 Total earnings (loss) before income taxes $226 $ 127 $801 $636 Fixed charges: Interest, including interest capitalized $180 $ 164 $521 $486 Portion of rental expense representative of the interest factor 216 205 621 618 Amortization of debt expense 3 3 8 8 Total fixed charges $399 $ 372 $1,150 $1,112 Coverage deficiency $173 $245 $349 $476 Note: As of September 30, 2005, American has guaranteed approximately $1.3 billion of AMR's unsecured debt and approximately $428 million of AMR Eagle's secured debt. The impact of these unconditional guarantees is not included in the above computation.