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Normal-Category Aeroplanes (CS-23) · CS-23 · EAR revision 13 May 2026
IRImplementing rule
(a)Each item of installed equipment is installed according to limitations specified for that equipment.
(b)On multi-engine aeroplanes, engine-driven accessories essential to safe operation must be distributed among multiple engines.
IR · CS 23.2505 — CS-23 · ED Decision 2017/013/R · CS-23 Easy Access Rules · EAR revision 13 May 2026
AMCAcceptable means of compliance
ASTM F44 F3264 Standard Specification for Normal Category Aeroplanes Certification
9.2 Equipment Function and Installation Requirements F3061/F3061M-24a Standard Specification for Systems and Equipment in Small Aircraft F3231/F3231M-24 Standard Specification for Electrical Systems for Aircraft with Combustion Engine Electrical Power Generation F3235-22 Standard Specification for Aircraft Storage Batteries F3232/F3232M-25 Standard Specification for Flight Controls in Small Aircraft F3233/F3233M-23b Standard Specification for Flight and Navigation Instrumentation in Aircraft F3408/F3408M-21 Standard Specification for Aircraft Emergency Parachute Recovery Systems
Remarks ASTM F44 published standards for showing compliance for electrical systems that are installed on aeroplanes with electric or hybrid-electric propulsion systems. EASA has not yet accepted F3316-19; however, EASA would take into consideration applications from applicants that use this standard as the basis for the development of their means of compliance subject to agreement with EASA. [AMC&GM to CS-23: Issue 4] [AMC&GM to CS-23: Issue 5]
AMC · AMC1 23.2505 — CS-23 · ED Decision 2026/003/R · CS-23 Easy Access Rules · EAR revision 13 May 2026
AMCAcceptable means of compliance
CS-23 Amdt 4
23.1301 Function and installation
23.1437 Accessories for twin-engine aeroplanes
AMC · AMC2 23.2505 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026
AMCAcceptable means of compliance
CS VLA Amdt 1 VLA.1301 Function and installation
AMC · AMC3 23.2505 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026
Consolidated from the EASA Easy Access Rules (revision 13 May 2026, 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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