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CS 25.1705 Systems and Functions; EWIS

Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023

IRImplementing rule

CS 25.1705Systems and Functions; EWIS

(a)EWIS associated with systems 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)CS 25.773(b)(2) Pilot compartment view.

(2)CS 25.854 Lavatory fire protection

(3)CS 25.858 Cargo compartment fire detection systems

(4)CS 25.981 Fuel tank ignition prevention.

(5)CS 25.1165 Engine ignition systems.

(6)CS 25.1203 Fire-detector systems

(7)CS 25.1303(b) Flight and Navigation Instruments

(8)CS 25.1310 Power source Capacity and Distribution

(9)CS 25.1316 System lightning protection

(10)CS 25.1331(a)(2) Instruments using a power supply

(11)CS 25.1351 General.

(12)CS 25.1355 Distribution system.

(13)CS 25.1360 Precautions against injury.

(14)CS 25.1362 Electrical supplies for emergency conditions.

(15)CS 25.1365 Electrical appliances, motors, and transformers.

(16)CS 25.1431(c) and (d) Electronic equipment.

[Amdt 25/5]

IR · CS 25.1705 — CS-25 · ED Decision 2008/006/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

All rules in SUBPART H – ELECTRICAL WIRING INTERCONNECTION SYSTEMS

Consolidated from the EASA Easy Access Rules (revision 26 Jan 2023, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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