STC ST9416SC-D

linked gtatts of amrrica Bepartment of transportation—Jfctoal 2ttiiation administration Supplemental 'Cgpe Certificate ST9416SC-Ds~*sf- American Airlines, Inc.

P /~\ 'DAW €QOQ/"\O• v/« 1JUA. *JO^Ow*r MD176 Tulsa, Oklahoma 74158-2809 '^n^*vijSi0Jeie&ij3mf<^J!rwfi>{tctcft<n^Jwwau<d<^^ , #& , 25 " - Federal Aviation•/rt&Mtr«m&n£l'4>t' <Jav( *Sl£au4a&0n&'.

A22WE McDonnell Douglas - ansceivers and Communication Radio Panels with 8.33 KHz channel spacing per ECO Z0930XX dated 4/1/98 and Prototype Revision Form 7721-6 dated 4/24/98 or later DAS1SW 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.

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DASlSWCooi ator (Title)

FAX FOUM 8110-2 (10-68)

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 or" grantor) (Number t street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink)