STC ST04569AT

FAA Form 8110-2 (03/21) Page 1 of ___ STS Engineering Solutions ST04569AT STS Engineering Solutions 2000 NE Jensen Beach Boulevard, Jensen Beach, FL 34957.

Federal Aviation Regulations 25 BOEING 737-700 Series / 737-800 Series TCDS # A16WE Installation of passenger seats and Passenger Service Units in accordance with FAA approved SKH Aerospace, LLC: Master Drawings List for B737-700 Document No. 2500-1552, Revision (-), dated August 8, 2023; or later FAA approved revision; Master Drawings List for B737-800 Document No. 2500-1556, Revision (-), dated August 8, 2023; or later FAA approved revision.

The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. (Limitations and Conditions continued on page 3 of 4) 10/27/2021 04/22/2024 11/08/2023 4

The installer must determine whether this design change is compatible with previously approved modifications.

If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

A copy of this STC must be included in the permanent record of the modified aircraft.

The SKH Aerospace, LLC Instructions for Continued Airworthiness, SKH2018-159, Revision A, dated January 9, 2023; and SKH2018-160, Revision A, dated January 9, 2023; or later FAA accepted revisions, must be made available to the operator at the time of installation.

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48A, the certification basis for the Boeing Model 737-700 Series and 737-800 Series is as follows:

a. The type certification basis for parts not changed or not affected by the change, for the Boeing Model 737-700 Series and 737-800 Series, is shown on TCDS A16WE.

b. The certification basis for parts changed or affected by the change since the reference date of application, October 27, 2021, is based upon Part 25 as amended by Amendment 25-146. Based on 14 CFR §§ 21.115 and

21.101, and the FAA policy for non-significant changes in FAA Order 8110.48A, the certification basis for this modification was determined to be: (Certification Basis Continued on Page 4 of 4) 3 4

Regulations at the latest amendment 25-1 through 25-146:

None

Regulations at an intermediate amendment:

None

Regulations at the amendment level in TCDS A16WE for the Model 737-700 and -800:

25.301(a)(b), 25.303, 25.305(a)(b)(d)(e)(f), 25.307(a), 25.561(b)(c), 25.562(a)(b)(c)(1)(2)(3)(4)(5)(7)(8), 25.601,

25.603(a)(b)(c), 25.605(a), 25.609(a), 25.785(a)(b)(c)(d)(f)(i)(j)(k), 25.789(a), 25.791(a)(b)(c)(d), 25.803(a)(c)(d)

(g), 25.812(a)(c)(d)(e), 25.813(a)(b)(c), 25.815, 25.817, 25.853(a)(b)(c), 25.1301(a), 25.1351(a), 25.1411(a)(f),

25.1529, 25.1541, 25.1557.

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