---
title: "CS 23.2505 General requirements on equipment installation — CS-23 · Avioverse"
description: "Each item of installed equipment is installed according to limitations specified for that equipment."
url: "https://avioverse.aero/regulations/easa/cs-23/subpart-f/cs-23-2505"
---

# CS 23.2505 General requirements on equipment installation

Normal-Category Aeroplanes (CS-23) · CS-23 · EAR revision 13 May 2026

IR Implementing rule

## CS 23.2505 General requirements on equipment installation

(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

AMC Acceptable means of compliance

## AMC1 23.2505 General requirements on equipment installation

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

AMC Acceptable means of compliance

## AMC2 23.2505 General requirements on equipment installation

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

AMC Acceptable means of compliance

## AMC3 23.2505 General requirements on equipment installation

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

[All rules in SUBPART F — SYSTEMS AND EQUIPMENT](https://avioverse.aero/regulations/easa/cs-23/subpart-f)

Consolidated from the EASA Easy Access Rules (revision 13 May 2026, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.