STC SA3961SW-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA3961SW-D This certificate issued to: American Airlines P.O. BOX 582809 MD208 Tulsa, Oklahoma 74158-2809 Pure 25 of the Federal Aviation Regulations.

Original Product -Type bertificate Numben: A22WE Make: MCDONNELL DOUGLAS Model: DC10-10 & -30 Description of Type Design Change:

Installation of TCAS provisions per ECO R3815BX, dated 5/16/90, 20 associated ECO/FCD Prototype Revision Approval Forms 7721/F2 dated 6/16/90, installation and test of TCAS per ECO R3913XX, dated 5/24/90 and 3 associated ECO/FCD Prototype Revision Approval Forms 7721/F2 dated 6/16/90, or installation and test of TCAS per ECO R3819XX, dated 11/15/90 and 3 associated ECO/FCD Prototype Revision Approval Forms 7721/F3 dated 12/31/90, or later DAS1SW approved revision.

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

The Bendix/King CAS-81 TCAS requires FAA approved American Airlines Inc. AFM AAL Supplement 4 (MDC-J1010) dated 6/4/90 and approved 6/16/90 or FAA approved American Airlines Inc. AFM AAL Supplement 6 (MDC-J5830) dated 6/4/90 and approved 1/20/91.

r of the Federal Aviation Administration .

Date spapplicatim: July 24, 1989 Jute missued:

Date of Issuance: December 18, 1989 Jale unvended: June 16, 1990 Amendment 1 By Direction of the Administrator 20, 1991 Amendment 2 EDERAL ATIO A. P.Vailh (Signature ) *MINISTRATO DAS1SW Coordinator (Title)

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 and street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Date of Transfer: - Signature of grantor (In ink): _.