NEW YORK (Standard&Poor's) Sept. 15, 2014--Standard&Poor's Ratings Services today assigned its 'A (sf)' issue rating to American Airlines Inc.'s series 2014-1 class A pass-through certificates, which have an expected maturity of Oct. 1, 2026. At the same time, we assigned our 'BBB- (sf)' issue rating to the company's series 2014-1 class B pass-through certificates, which have an expected maturity of Oct. 1, 2022. The final legal maturity dates will be 18 months after the expected maturity dates. American Airlines is issuing the certificates under a Rule 415 shelf registration. We base the ratings on the credit quality of American Airlines' parent, American Airlines Group Inc. (AAG), the substantial collateral coverage by good-quality aircraft, and the legal