STC SA3972SW-D

ttnittd £tatts of amrrica Btpartmcnt of Importation —$ederal 2toiation administration Supplemental t^pe Certificate SA 3972SW-D

AMERICAN AIRLINES INC P. 0. Box 582809, MD 208 Tulsa, Oklahoma 74158-2809 iwJrwJy^i^de&iOMfc>*jA&^>6lc>astn^fi>r<>cUud taMvremtyn&^JlivJ 25 ^jA& Federal Aviation *sl&aM£a/i0-nA/.

Boeing 757-223 O/ Modify the Passenger Cabin Interior Configuration from 12 First Class and 182 Coach Class to 22 First Class and 166 Coach Class seats, and install new galley, closet and flight attendant seats per ECO F0208XX dated 7/17/92 and Prototype Revision Form 7721-3 dated 8/20/92 or later DAS1SW approved revision.

For overwater aircraft, modify the Passenger Cabin Interior from 12 First Class and 182 Coach Class to 22 First Class and 166 Coach Class seats, with a new galley, closet and flight attendant seats per ECO F0240XX dated 8/20/92 and Prototype Revision Form 7721-3 dated 9/2/92 or later DAS1SW approved revision.

This approval should not be incorporated in any aircraft of this specific model until compatability of this modification with previously approved modifications has been determined by the installer.

This modification does not comply with FAR 25.813(c) as amended by Amendment 25-76 effective June 3, 1992 (FAR 121. 310(f ) (3) (iii)) .

.' fi/ 29/92 8/20/92 (Signature) DAS1SW Coordinator (Title)

FAA FOUM 81 10-2 (10-68)

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