STC ST10487SC-D

FAA Form 8110-2-1(10-69) Page 1 of 3 Number ST 10487 SC-D

This Certificate issued to

Part 25 of the Federal Aviation Regulations.

Description of Type Design Change: Relocation of passenger seats in the F/C cabin in accordance with American Airlines Master Data List J1359-MDL, Revision A, dated 8 February 2010 or later FAA 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 A16WE Make : Boeing Model : 737-800 Date of application : 17 December 2009

Date of issuance : 8 February 2010

( Signature)

C.E.Williams ODA-700094-SW Administrator

( Title)

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

Number ST 10487 SC-D

This modification requires Boeing S/B 737-25-1614 - EQUIPMENT AND FURNISHINGS – Passenger Compartment – Interior Reconfiguration - Change from 148 Seat Passenger Configuration to 160 Seat Passenger Configuration (16 F/C, 144 T/C) or equivalent as delivered Boeing configuration as defined by LOPA-378-2091.

Certification Basis:

Based on 14CFR 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 series aircraft for the change is as follows:

a. The Type Certification basis for Boeing Model 737-800 series 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, 17 December 2009 is based upon Part 25, as amended by Amendment 25-129. 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 25-129

25.29, 25.301(a), 25.303, 25.307(a), 25.562(a)(c.5)(c.8), 25.601, 25.609(a.3), 25.619, 25.625(d), 25.789(a),

25.791(a-b), 25.815, 25.1529

Regulations at an intermediate amendment None.

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