STC ST00140MC

Vnitea States of.flm.erica (J)epartment ofTransportation Cf'ecfera{}lviation jlaministration Supp[ementa[rtype Certificate ¾um6er ST00140MC %is certificate issued" to: L-3 Communications Integrated Systems L.P.

10001 Jack Finney Blvd.

Greenville, TX 75402 Certifies tfiat tlie cliange in tlie type aesignfor tliefoffowing proauct witli tlie flmitations anacontfitions tlierefore as specified" fie reon meets tlie airworthiness requirements of<Part 25 oftlie Coae of Peaera[ <J<fgufations.

Origina[<Proauct 9vta/i.g: The Boeing Company 'lype Certificate :Jfum6er. A2NM 9vtoae£ 757-200 (])escription ofrtype (])esign Cliange:

Installation of mission communications systems on a 757-200 in accordance with (1) L-3 Communications Integrated Systems L.P. Sealed Drawing List SDL 10452A- l Revision M, dated 03 September 2021, or later FAA-approved revision;

(2) Instructions for Continued Airworthiness (ICA), L-3 Communications Document No. G 10452A.28.08 Revision G, dated 01 October 2020, or later FAA-accepted revision; (3) L-3 Flight Manual Supplement, L-3 Communications Document No. D63 l N002. l 0556 Revision -, dated O1 July 2018, or later FAA-approved revision.

Limitations ana Contfitions.

(Limitations and Conditions continued on page 3 of 4) Tliis certificate ana tlie supporting aata wliicli is tlie 6asis for approva( sfia[[ remain in effect unti[ surrenaered', suspenaea, revo/i.ga or a termination aate is otlierwise esta6[isliea 6y tfie }l.aministrator of tfie Peaera[}l.viation }laministration.

(])ate ofJl.ppflcation: 30 March 2015 (])ate <J<fissuea: 05 November 2018 (])ate ofIssuance: 11 December 2016 (])ate }l.menaea: (1) 10 August 2018, (2) 03 Sept 2021 <By (])irection oftlie }l.aministrator Signature _ rfitfe ODA-750173-SW Administrator 42 3 22 2 (Ref. 14 CFR 21.1201.

Vn itecfStates of;4men·ca (J)epartment of<Transportation <Fecfera{]1.vi.ation. }1aministration Supp{ementa{rtype Certificate :Num6er ST00140MC l¾~V(;<l1O:NS: 7ne transfer endorsement 6efow may 6e usedto notify tne appropriate PJI.Jl }lircraft Certification Office oftne transfer oftnis Supp{ementa{<Jype Certificate. 7ne PJI.Jl wi{{reissue tne certificate in tne name oftne transferee and forward it to nim.

Transfer 'Enaorsement 'lransfer tlie ownersfiip ofSuppfementa[r[ype Certificate :Num6er:

rro (:Name ana aaaress oftransferee) Prom (:Name ana aaaress ofgrantor)

r.E:>(tent of}lutfiority (if ucensing agreement):

<Date ofrtransfer:

Signature ofgrantor:

The STC's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder . (Ref. 14 CFR 21.120}.

Vnitetf States offimen'ca <Depa,tment of<Transportatfon Petfera{}l·viation JJ..cfministration Supp{ementa{rtype Certificate (Continuation Sheet) Wum6er: ST00140MC Jl_mendment 2 <Date ofIssuance: 03 September 2021 Limitations ana Conaitions: (Continued')

1. This approval of the change in type design applies to aircraft serial numbers 29025, 29026, 29027, and 29028 .

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

3. 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.

4. Installation of STCs ST00129BO, ST00744WI-D, ST00259WI-D, ST01401SE, ST01053WI-D, ST01448SE, and STI 0704SC are prerequisites for this STC.

5. The FAA has not certified the following mission equipment components for which the provisions are intended: Communication Switching System Fax/Printer/Scanner, Mission Printer/Copier, A/B/C Switches, Communications Satellite Modem, Fill Panels, Transmitter Receivers, ARC-210 Transceiver, Diplexers, 'Speakers, MIDU Panel, Airlink Gateway Unit, Airborne Communication Gateway Unit, HSD-400, Radio Set Controls, Mission Radio Control Panels, Communication Management Controller, KY-100/KYl00M, RT-5000 Transceiver, HF Receiver Exciter, Audio Control Panels, Lighting Power Supply, CSU, UPS, Controllers, Mission Systems Receivers, Baseband Interface Group Equipment, Antenna Select Panels, Mission GPS Receiver, MUOS, and components of the VPS communication system. 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.

6. The lithium batteries are not installed in the HWW-2U-3L-4 Control Hardware Bridge System Interface Module, KY-l00M, KIV-7M as part of the FAA-approved type design.

7. Electrical Wiring Interconnection System (EWIS) ICA requirements are documented in Section 17 of L-3 document G 10452A.28.08.

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

Section 25.25 l(b) at Amendment 25-23 Vibration and buffeting (documented in TSB ELOS Memo SA00427MC-T-F-l)

9. Refer to STC Configuration Management Document, Gl0556A.28.46 Revision-dated 13 December 2019, or later FAA-approved revision, for FAA-approved configurations certified by this STC.

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 757-200 aircraft is as follows:

a. The type certification basis for 757-200 series airplanes is shown on TCDS A2NM 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, 30 March 2015, is as follows:

(Certification Basis continued on Page 4 of 4) (Ref. 14 CFR 21.55}.

VnitedStates ofj1 men·ca (J)epartment of<Transportatfon Ped'era{J1.'oiation ]1.dministration Supp{ementa{rtype Certificate (Continuation Sheet) :Num6er: ST00140MC }lmendment 2 (])ate ofIssuance: 03 September 2021 Para. Arndt. Para. Arndt. Para. Arndt.

25.2l(a)(l) 25-42 25.365(a)(b)(d) (See Note 1) 25-0 25.857(c) 25-32

25.23(a)(b) 25-0 25.365(e) (See Note 2) 25-0 25.90l(c) 25-40

25.29(a)(b) 25-42 25 .365(e) (See Note 3) 25-54 25.903(c) 25-40

25.101 (a)(b )( c)( d)( e )(f)(g)(h) 25-38 25.365(e) (See Note 4) 25-72 25.98l(a)(3) 25-102

25.105(a)(b)(c)(d) 25-0 25.561 (a)(b )(3)( c) 25-23 25.1301 (a)(b )( c )( d) 25-0 25 .109( a)(b )( d) 25-0 25.571 (a)(b )( d)( e) 25-45 25.1307(c) 25-23

25.11 l(a)(b)(c)(d) 25-42 25.58l(a)(b)(c) 25-23 25. l 309(a)(b )( c )( d)(g) 25-41

25. l 13(a)(b) 25-23 25.601 25-0 25.1322(a)(b)(c)(d) 25-38

25. l 15(a)(b)(c) 25-0 25.603(a)(b) 25-38 25.135l(a) 25-41

25.117 25-0 25.605 25-0 25.1353(a)(b)(c) 25-42

25. l 19(a)(b) 25-0 25.609(a)(b) 25-0 25.1355(a) 25-38

25.121 (a)(b )( c)( d) 25-0 25.613(a)(b)(c)(d)(e) (See Note 5) 25-0 25.1357(a)(c)(d) 25-0

25.123(a)(b) 25-0 25 .613(a)(b)(c) (See Note 6) 25-112 25.1359(d) 25-32

25.171 25-7 25 .615(a) 25-23 25.138l(a)(b) 25-0

25. l 73(a)(b)(d) 25-7 25 .619(a)(b)(c) 25-23 25.140l(b) 25-41

25.177(a)(b) 25-42 25.625(a)(b)(c) 25-23 25.1419(a)(b) 25-23

25.18l(a)(b) 25-42 25.629(a)(b) 25-46 25.143 l(a)(c) 25-0

25.207(c) 25-42 25.777(a) 25-0 25.1438(a)(c) 25-41

25.251 (a)(b )( c)( d) 25-23 25.785(b)(c) 25-32 25.146l(a)(d) 25-41

25.253(a)(b) 25-23 25.787(a)(b)(c) 25-38 25.1529 25-54

25.30l(a)(b)(c) 25-23 25.789 25-32 25.154l(a)(b) 25-0

25.303 25-23 25.803(a) 25-32 25 .1557(a) 25-38

25.305(a)(b) 25-23 25.813(a) 25-32 25.158l(a)(b) 25-42

25.307(a)(b )( c)( d) 25-23 25.815 25-38 25.1583(c)(l) 25-42

25.32l(a)(b) 25-23 25.831 (a) 25-41 25 .1585(a) 25-42

25.33l(a)(b)(c) 25-23 25.84l(a) 25-38 25. l 587(b )(3) 25-42

25.337(a)(b)(c) 25-23 25.843(a) 25-0 26.1 l(c) 26-0

25.34l(a)(b)(c) 25-0 25.853(a)(b )(b-2)(b-3) 25-32 26.47(c) 26-1

25.35l(a) 25-46 25.855(a)(a- l )(a-2)(b )( e )(2) 25-32 36.7 36-26

25.35l(b) 25-23 25 .856(a) 25-111 Note 1. Certification basis for 14 CFR 25.365(a)(b)(d) Amendment 0 is applicable to the fuselage penetrations associated with antenna relocations due to the VPS antenna/radome installation.

Note 2. Certification basis for 14 CFR 25.365(e) Amendment 0 is applicable to the forward cargo bay modification and is consistent with the TCDS certification basis.

Note 3. Certification basis for 14 CFR 25.365(e) Amendment 54 is applicable to the mission system modifications affecting decompression venting between the upper and lower decks .

Note 4. Certification basis for 14 CFR 25.365(e) Amendment 72 is applicable to the VPS radome installation.

Note 5. Certification basis for 14 CFR 25.613 (a)(b)(c)(d)(e) Amendment 0 is applicable to the mission communication system interior modification.

Note 6. Certification basis for 14 CFR 25.613 (a)(b)(c) Amendment 112 is applicable to the VPS radome installation and associated VPS system interior modifications and mission system changes certified under Amendment 2 of the STC.

--------------------------------------------------END----------------------------------------------- AType Certificate holder who allows a person to use the Type Certificate to manufacture a new aircraft aircraft engine or propeller must provide that person with a written licensing agreement acceptable to the FAA. (Ref. 14 CFR 21.SSl.

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