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  4. Part 25
  5. § 25.1705
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14 CFR · Part 25

14 CFR § 25.1705

Systems and functions: EWIS.

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Read in Subpart H
Part 25 Contents
  • Special Federal Aviation Regulation No. 13
  • Special Federal Aviation Regulation No. 109
  • Subpart A: General
  • Subpart B: Flight
  • Subpart C: Structure
  • Subpart D: Design and Construction
  • Subpart E: Powerplant
  • Subpart F: Equipment
  • Subpart G: Operating Limitations and Information
  • Subpart H: Electrical Wiring Interconnection Systems (EWIS)
  • Subpart I: Special Federal Aviation Regulations
  • Appendix A to Part 25
  • Appendix B to Part 25
  • Appendix C to Part 25
  • Appendix D to Part 25
  • Appendix E to Part 25
  • Appendix F to Part 25
  • Appendix H to Part 25: Instructions for Continued Airworthiness
  • Appendix I to Part 25: Installation of an Automatic Takeoff Thrust Control System (ATTCS)
  • Appendix J to Part 25: Emergency Evacuation
  • Appendix K to Part 25: Extended Operations (ETOPS)
  • Appendix L to Part 25: HIRF Environments and Equipment HIRF Test Levels
  • Appendix M to Part 25: Fuel Tank System Flammability Reduction Means
  • Appendix N to Part 25: Fuel Tank Flammability Exposure and Reliability Analysis
  • Appendix O to Part 25: Supercooled Large Drop Icing Conditions
(a)

EWIS associated with any system required for type certification or by operating rules must be considered an integral part of that system and must be considered in showing compliance with the applicable requirements for that system.

(b)

For systems to which the following rules apply, the components of EWIS associated with those systems must be considered an integral part of that system or systems and must be considered in showing compliance with the applicable requirements for that system.

(1)

§ 25.773(b)(2) Pilot compartment view.

(2)

§ 25.981 Fuel tank ignition prevention.

(3)

§ 25.1165 Engine ignition systems.

(4)

§ 25.1310 Power source capacity and distribution.

(5)

§ 25.1316 System lightning protection.

(6)

§ 25.1331(a)(2) Instruments using a power supply.

(7)

§ 25.1351 General.

(8)

§ 25.1355 Distribution system.

(9)

§ 25.1360 Precautions against injury.

(10)

§ 25.1362 Electrical supplies for emergency conditions.

(11)

§ 25.1365 Electrical appliances, motors, and transformers.

(12)

§ 25.1431(c) and (d) Electronic equipment.

Regulations Referenced

14 CFR 25.77314 CFR 25.98114 CFR 25.116514 CFR 25.131014 CFR 25.131614 CFR 25.133114 CFR 25.135114 CFR 25.135514 CFR 25.136014 CFR 25.136214 CFR 25.136514 CFR 25.1431

Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.

Primary Source

  • Official Source (14 CFR · Part 25)