STC ST04664NY

IMPORT ST04664NY

AMAC AEROSPACE SWITZERLAND AG STERNENGASSE 18 4051 BASEL

SWITZERLAND Part 25 Title 14 Code of Federal Regulations A16WE The Boeing Company 737-700/-800/-900/-900ER Series 737-8/-9

1. Activation of Wireless Local Area Network (WLAN) system. This Modification activates the Wireless Local Area Network (WLAN) Function of a preinstalled WLAN system (Router interfaced with WAPs in the cabin emitting in 2.4GHz and/or 5GHz Frequency Band and a cockpit WLAN ON/OFF switch). Activation must be in accordance with AMAC Aerospace Master Data List as follows:

Configuration 1: MDL-B7372-1-4430, Rev. B, dated March 30, 2023, or later EASA approved revisions.

Configuration 2: MDL-B7372-2-4430, Rev. A, dated March 20, 2023, or later EASA approved revisions.

(See Description of Type Design Change Continued on Page 3 of 4)

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

(See Limitations and Conditions Continued on Page 3 of 4) July 20, 2021 September 27, 2021 July 11, 2023 Anthony E. Gallo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 4

IMPORT ST04664NY 4

IMPORT ST04664NY Date Amended: July 11, 2023

Description of Type Design Change (continued):

2. Aircraft is to be operated in accordance with AMAC Aerospace Airplane Flight Manual Supplement, or later EASA approved revisions, as follows:

Configuration 1: AFMS-B7372-1-4430, Rev. A, dated March 29, 2021 Configuration 2: AFMS-B7372-2-4430, Rev. A, dated June 10, 2023

3. Aircraft is to be maintained in accordance with AMAC Aerospace Instruction for Continued Airworthiness or later EASA accepted revisions, as follows:

Configuration 1: ICA-B7372-1-4430, Rev A, January 17, 2023 Configuration 2: ICA-B7372-2-4430, Rev A, dated September 2, 2022

4. The existing aircraft maintenance manual remain unchanged.

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

3. Aircraft is to be operated in accordance with the "Limitations" section of AMAC Aerospace Airplane Flight Manual Supplement referenced in item 2, Configuration 1, under description of type design change section of this STC.

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

5. Configuration 1 has not been tested to be compatible with Category III and WLAN must be switched off as interference with aircraft system has not been tested.

Configuration 2 has been tested to be compatible with Category III with no limitation to switch off the WLAN during low visibility approaches.

Certification Basis:

Based on 14 CFR §21.115 and §21.101, and the FAA policy for changes that are not significant in FAA Order 8110.48A, the certification basis for this modification are as follows:

a) The type certification basis for the Boeing 737-700, -800, -900 and -900ER, -8 and -9 aircraft is as shown on TCDS A16WE for parts not changed or not affected by the change.

(Certification Basis Continued on Page 3 of 4) 3 4

IMPORT ST04664NY Date Amended: July 11, 2023

Certification Basis (continued:

b) The type certification basis for the Boeing 737-8 and -9 aircraft is as shown on TCDS A16WE for parts changed or affected by the change.

c) The type certification basis for the Boeing 737-700, -800, -900 and -900ER aircraft is as shown on TCDS A16WE for parts changed or affected by the change with the following exceptions:

Regulations at the latest amendment 25-0 through 25-137:

25.1, 25.869, 25.1301, 25.1309, 25.1351, 25.1353, 25.1360, 25.1431, 25.1501,

25.1529, 25.1581, 25.1585.

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