STC ST9437SC-D

United £tara of amtrica Bcpartment of Importation— federal atriation administration Supplemental 'Cgpe Certificate AS / ST9437 SC-D<sKwm>tW' American Airlines, Inc.

p. 0. Box 582809 MD176 Tulsa, Oklahoma 74158-2809 jaMy^^J!fa ^c^^v^^.**^^ 25 ^^» Federal Aviation iSleauta£&nA/.

V^ta^nM^ <JiwcUic£ ——. J'yfa'&^vt^tca^e>tyii6rrd0?-: AoWb McDonnell Douglas DC-9-82/-83 Installation of interior modifications in accordance with American Airlines Engineering Change Order (ECO) K2272XX dated 1/6/00 and 3 Prototype Revision Form 7721-6 each dated 3/16/00 and ECO K2279XX dated 1/4/00 and 3 Prototype Revision Form 7721-6 each dated 3/16/00 or later DAS 1 SW approved revisions of each.

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

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

S$d>rwnt&Jr<z£>v-^J&e' 9/21/99 ' 31 I //UU (Signtpu;

R. D. Iliff DAS 1SW Coordinator (Title)

FAAFot«8!10-2(IO-68)

INSTRUCTIONS: Tha transfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of the Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number_ to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number C street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink)