STC ST10494SC

FAA Form 8110-2-1(10-69) Page 1 of 3 Number ST10494SC

This Certificate issued to

Part 25 of the Federal Aviation Regulations.

Description of Type Design Change: Reconfiguration of tourist class seats in accordance with Master Data List, K3525-AMD-01, MDL, Revision A, August 30, 2013, or later ODA-700094-SW approved revision.

Limitations and Conditions: 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)

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

American Airlines, Inc.

3900 N. Mingo Road Engineering Dept., MD 208 Tulsa, Oklahoma 74116 A6WE Make: Boeing Model: DC-9-82, DC-9-83 Date of application : October 24, 2012

Date of issuance : December 20, 2012

Date amended: August 30, 2013

(Signature)

C.E. Williams ODA-700094-SW Administrator

(Title)

FAA Form 8110-2-1(10-69) Page 3 of 3 (Continuation Sheet)

Number ST10494SC

The Instructions for Continued Airworthiness, Document Number K3525-ICA, Revision New, dated November 2, 2012 or later FAA AEG accepted revision shall be made available to the operator at the time of installation. The aircraft shall be maintained in accordance with the Instructions for Continued Airworthiness. A revised EWIS ICA is not required for this STC.

This modification requires previous or concurrent incorporation of the following STCs: ST10151SC-D, SA3993SW-D, and ST10163SC-D.

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 DC-9-82 & DC-9-83 series aircraft for the change is as follows:

a. The Type Certification basis for Boeing Model DC-9-82 & DC-9-83 series airplanes is shown on TCDS A6WE 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, October 24, 2012 is based upon Part 25, as amended by Amendment 25-136 and Part 26 as amended by Amendment 26-6. 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 determined to be:

Regulations at the latest amendment 25-0 through 25-136

25.301, 25.303, 25.601, 25.619, 25.815, 25.817, 25.1423(c), 25.1529, 25.1541

Regulations at an intermediate amendment

25.853(a),(c) Amendment 83, 25.869(a.4) Amendment 72, 25.981(a.3),(b) Amendment 102,

25.1309(a),(e),(f) Amendment 41, 25.1351(a) Amendment 41, 25.1353(b) Amendment 41

Regulations at the amendment level in TCDS A6WE

25.21(a.1), 25.29, 25.305(a),(b), 25.307(a), 25.365(g), 25.561, 25.603, 25.605, 25.611, 25.613(a),(b),

25.625(d), 25.785(a),(b), (c.2),(d),(e),(i), 25.787(a), 25.789, 25.791(a),(b),(e), 25.803(d), 25.811(d),

25.812(e.1),(l), 25.1301, 25.1411(a),(b), 25.1415(e), 25.1447(c.1), 25.1561(b),(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),(d)(5) (Amendment No. 26-0, through 26-6) -------------------------------------------------------------- END -----------------------------------------------------------------