STC ST00173MC

Number ST00173MC

This certificate issued to: L3Harris Technologies Integrated Systems L.P.

10001 Jack Finney Blvd.

Greenville, TX 75402

Part 25 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: A20WE Make: The Boeing Company Model: 747-200B (2G4B)

Project 10510-1 Installation of Mission Communications System upgrades on the VC-25A aircraft in accordance with (1) L3Harris Technologies Integrated Systems L.P. Sealed Drawing List 10510-1 Revision M dated 1 February 2023, (2) L3Harris Technologies Integrated Systems L.P. Instructions for Continued Airworthiness (ICA), Document No.

G10510.28.08 Revision F, dated 1 July 2022 (3) L3Harris Technologies Integrated Systems L.P. Flight Manual Supplement Document No. G10510.28.45 Revision A, dated 1 June 2022, or later FAA/ODA approved revisions of (1) (2) and/or (3).

(Limitations and Conditions continued on page 3 of 4)

Date of application: 23 June 2017 Date reissued:

Date of issuance: 30 July 2019 Date amended: 2 February 2023

Signature

Title ODA-750173-SW Administrator Page 1 2 3 4 Amdt 1 1 1 1

FAA Form 8110-2 (5/14) Page 1 of 4

To (Name and address of transferee)

From (Name and address of grantor)

FAA Form 8110-2 (5/14) Page 2 of 4

Number: ST00173MC Amendment 1 Date of Issuance: 2 February 2023 Limitations and Conditions: (Continued)

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

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

3. The FAA has not certified certain mission equipment components for which the provisions are intended. You must get additional FAA approval to install this equipment. The FAA must evaluate the installation to ensure it complies with the applicable airworthiness standards.

4. Installation of this STC is limited to serial numbers 23824 and 23825.

5. Refer to STC Configuration Management Document, G10510.28.46 Revision C dated 26 August 2022, or later FAA-approved revision, for applicable prerequisite STC configurations and FAA-approved configurations certified by this STC.

6. Equivalent Level of Safety Findings have been made for the following regulation(s):

14 CFR 25.251(b) Vibration and buffeting.

(documented in TAD ELOS Memorandum ST00435MC-T-F-1)

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 Company 747-200B (2G4B) aircraft is as follows:

a. The type certification basis for The Boeing Company 747-200B (2G4B) series airplanes is shown on TCDS A20WE 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, 23 June 2017, is as follows:

(Certification Basis continued on Page 4 of 4)

FAA Form 8110-2 (5/14) Page 3 of 4

(Continuation Sheet) Number: ST00173MC Amendment 1 Date of Issuance: 2 February 2023

Para. Amdt. Para. Amdt. Para. Amdt.

25.21(a)(1) 25-7 25.373(a) 0 25.831(b) 0

25.23(a)(b) 0 25.471(a)(b)(c) 25-23 25.841(a) 0

25.29(a)(b) 25-72 25.473(a)(b)(c) 0 25.853(a)(b)(b-2)(b-3)(d-2) 25-59

25.147(a)(b)(c)(d)(e) 0 25.479(a)(b)(c)(e) 0 25.855(b) 25-15

25.173(a)(b)(c)(d) 25-7 25.481(a)(c) 0 25.869(a)(4) 25-72

25.177(a)(b)(c) 0 25.491 0 25.901(c) 25-40

25.181 0 25.561(a)(b)(c) 25-23 25.903(c) 25-40

25.231(a) 0 25.571(a)(b)(d)(e)(1) 25-45 25.981(a)(3) 25-102

25.233(a)(b)(c) 0 25.581(a)(b)(c) 25-23 25.1301(a)(b)(c)(d) 0

25.251(a)(b)(c) 0 25.601 0 25.1309(a)(b)(e) 0

25.301(a)(b)(c) 25-23 25.603(a)(b)(c) 25-46 25.1329(f) 0

25.303 25-23 25.605(a) 25-46 25.1351(a) 0

25.305(a)(b)(c) 25-23 25.607(a)(b)(c) 25-23 25.1353(a)(b) 0

25.307(a)(b)(c) 25-54 25.609(a)(b) 0 25.1357(a)(c) 0

25.321(a)(b) 0 25.611 25-23 25.1381(a) 0

25.331(a)(b)(c)(d) 0 25.613(a)(b)(c) 25-112 25.1401(b) 0

25.333(a)(b)(c) 0 25.615(a)(b) 0 25.1419(a)(b) 0

25.337(a)(b)(c)(d) 0 25.619(a)(b)(c) 0 25.1431(a)(c) 0

25.341(a)(b)(c) 0 25.625(a)(b)(c) 25-72 25.1529 25-54

25.345(a) 0 25.629(a)(b) 0 25.1541(a)(b) 0

25.349(a) 0 25.685(a)(c) 0 25.1581(a)(b)(c) 0

25.351(a)(b) 0 25.785(c)(2) 0 25.1583(a)(c) 25-105

25.365(a)(b)(c)(d)(e)(f)(g) 0 25.791 25-32 747.SC.A3 0

25.365(e)(3)(f)* 25-87 25.801(a)(b)(c)(d)(e) 0 747.SC.A4(a)(b)(d)(e)(f)(j)(u) 0

25.367(a)(b) 0 25.807(d)(2) 25-15 *Applicable to VPS Modification Only Exemption from CFR Part 26: Exemption No. 9935 was granted on 16 September 2009.

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FAA Form 8110-2 (5/14) Page 4 of 4