STC ST04594CH

Number: ST04594CH

Part 25 of the Federal Aviation Regulations.

Original Product Type Certificate Number: A16WE Make: Boeing Model: 737-8, 737-9

Date of Application: July 26, 2022 Date Reissued:

Date of Issuance: March 14, 2023 Date Amended:

Marilyn M. Feigl ODA Administrator Title: Envoy Aerospace, LLC ODA-831240-CE Envoy Aerospace, LLC 75 Executive Drive, Suite 313 Aurora, IL 60504 Installation of a Viasat Cellular Data Modem (VCDM) in accordance with Astronics Connectivity Systems and Certification (CSC) Master Data List, Doc. No. DC104-141743-00, Revision A, dated March 10, 2023, or later FAA-approved revisions.

1) This STC is applicable to all serial numbers for this Make-Model.

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

3) FAA Approved Airplane Flight Manual Supplement, Astronics CSC Doc. No. DC303-141743-00, Revision -, approved March 14, 2023, or later FAA approved revision is required on board the modified aircraft.

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

Number: ST04594CH

(Continuation Sheet) Number: ST04594CH Date of Issuance: March 14, 2023 Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Boeing 737-8, 737-9 aircraft is as follows:

a. The type certification basis for the Boeing 737-8, 737-9 aircraft is shown on TCDS A16WE for parts not changed or affected by the change.

b. This certification basis for parts changed or affected by the change since the reference date of application is based upon TCDS A16WE. Based on 14 CFR 21.115 and 21.101, and the FAA policy for significant changes in Order 8110.48, the certification basis for this modification was determined to be:

Applicable regulations at the latest amendment 25-0 through 25-137, 25-141 § 25.29(a)(b) § 25.301(a)(b) § 25.303 § 25.305(a)(b) § 25.307(a) § 25.561(c) § 25.601 § 25.603(a)(b)(c) § 25.605(a) § 25.609(a) § 25.611(a)(b) § 25.613(a)(b) § 25.619(a)(b)(c) § 25.625(a) § 25.789(a) § 25.853(a) § 25.869(a)(3) § 25.899(a)(b) § 25.981(a) § 25.1301(a)(b) § 25.1307(c) § 25.1309(a)(b)(d)(g) § 25.1351(a)(1) § 25.1353(a)(c) § 25.1357(a)(c)(g) § 25.1360(a) § 25.1431(a)(b)(c)(d) § 25.1501(a)(b) § 25.1529

§ 25.1581(a)(b)(d) § 25.1585(a)(b) § 25.1701(a)(b) § 25.1703(a)(b) § 25.1705(b) § 25.1707(a)(b)(e)-(j)(l) § 25.1709(a)(b) § 25.1711(a)(c)(d)(e) § 25.1713(a)(c) § 25.1715(a)(b) § 25.1717 § 25.1719 § 25.1721(a)(b)(c) § 25.1729 Applicable 14 CFR Part 26 regulations at the latest amendment 26-0 through 26-7 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 latest amendment date of this STC, compliance has been found for the following regulations:

14 CFR § 26.11(c) [Amdt. No. 26-7]; § 26.47(c) [Amdt. No. 26-7]. This modification does not affect or create fatigue critical baseline structure.

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