STC ST11264DS

Number: ST11264DS

This certificate issued to: American Airlines, Inc.

3900 North Mingo Road Engineering Dept., MD 537/TUL Tulsa, OK 74116

Part 25 of the Code of Federal Regulations.

Original Product Make: Boeing Type Certificate Number: A16WE Model: 737-800/-823

Description of Type Design Change: Takeoff Configuration Switch Installation .

Modification in accordance with Master Data List, 104111-MDL, Revision A, dated May 27, 2022 or later FAA approved revision and Serial Number Effectivity Report 104111-SNER, Revision B, dated May 6, 2022 or later FAA approved revision.

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.

(Limitations and Conditions continued on page 3 of 3)

Date of Application: February 9, 2022 Date Reissued:

Date of Issuance: May 28, 2022 Date Amended:

Signature Richard N. Hazlewood

Title: ODA-700094-SW Administrator

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST11264DS

Transfer the ownership of Supplemental Type Certificate Number: ST11264DS

To (Name and address of transferee)

From (Name and address of grantor)

FAA Form 8110-2 (3/21) Page 2 of 3

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST11264DS

The Instructions for Continued Airworthiness, Document Number 104111-ICA, Revision D, dated May 17, 2022 or later FAA accepted revision shall be made available to the operator at the time of installation. The aircraft shall be maintained in accordance with the applicable Instructions for Continued Airworthiness. A revised EWIS ICA is not required for this STC.

Certification Basis:

Based on 14 CFR 21.115 and 21.101, and the FAA policy for non-significant changes in FAA Order 8110.48, the certification basis for the Boeing Model 737-800/-823 aircraft for the change is as follows:

a. The Type Certification basis for Boeing Model 737-800/-823 airplanes is shown on TCDS A16WE for parts not changed or not affected by the change.

b. The certification basis for parts changed or affected by the change since the reference date of application, February 9, 2022 is based upon Part 25, as amended by Amendment 25-146 and Part 26 as amended by Amendment 26-7. Based on 14 CFR 21.115 and 21.101, and the FAA policy for non-significant changes in FAA Order 8110.48, the certification basis for this modification was dete rmined to be:

Regulations at the latest amendment 25-0 through 25-146

25.29, 25.301(a), 25.303, 25.601, 25.603, 25.605, 25.771(a), 25.777(a), 25.789(a) 25.853 (a), 25.1381(a)(1),

25.1529, 25.1541, 25.1581(a)(2)

Regulations at an intermediate amendment level

25.981(a)(3)(d) at amendment 25-125

Regulations at the amendment level in TCDS A16WE

25.21(a)(1), 25.305(a)(b), 25.307(a), 25.561(a)(b)(3)(c), 25.611, 25.613, 25.869(a)(4), 25.1301(a)(b)(c)(d),

25.1309(a)(b)(c)(d)(g), 25.1353(a), 25.1431(a)(c)

14 CFR Part 26 Regulations Based on 14 CFR 21.101(g), applicable provisions of 14 CFR part 26 are included in the certification basis. For any future 14 CFR part 26 amendments, the holder of this STC must demonstrate compliance with the applicable sections. As of the issuance of this STC, compliance has been found for the following regulations 14 CFR 26.11(c) Amendment 26-0.

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FAA Form 8110-2 (3/21) Page 3 of 3