---
title: "CS 23.2300 – CS 23.2340: SUBPART D — DESIGN AND CONSTRUCTION (CS-23) — rule index · Avioverse"
description: "CS 23.2300 – CS 23.2340, CS-23. The flight control systems are designed to: operate easily, smoothly, and positively enough to allow proper performance…"
url: "https://avioverse.aero/regulations/easa/cs-23/subpart-d"
---

# SUBPART D — DESIGN AND CONSTRUCTION

Normal-Category Aeroplanes (CS-23) · CS-23 · CS 23.2300 – CS 23.2340

On this page

1. ## [CS 23.2300 Flight control systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2300)

   The flight control systems are designed to: operate easily, smoothly, and positively enough to allow proper performance of their functions;

   [AMC1 23.2300 Flight control systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2300#amc1-23-2300)

   [AMC2 23.2300 Flight control systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2300#amc2-23-2300)

   [AMC3 23.2300 Flight control systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2300#amc3-23-2300)

2. ## [CS 23.2305 Landing gear systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2305)

   The landing gear is designed to: provide stable support and control to the aeroplane during surface operation;

   [AMC1 23.2305 Landing gear systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2305#amc1-23-2305)

   [AMC2 23.2305 Landing gear systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2305#amc2-23-2305)

   [AMC3 23.2305 Landing gear systems](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2305#amc3-23-2305)

3. ## [CS 23.2310 Buoyancy for seaplanes and amphibians](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2310)

   Aeroplanes intended for operations on water must: provide buoyancy of 80 % in excess of the buoyancy required to support the maximum weight of the…

   [AMC1 23.2310 Buoyancy for seaplanes and amphibians](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2310#amc1-23-2310)

   [AMC2 23.2310 Buoyancy for seaplanes and amphibians](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2310#amc2-23-2310)

   [AMC3 23.2310 Buoyancy for seaplanes and amphibians](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2310#amc3-23-2310)

4. ## [CS 23.2315 Means of egress and emergency exits](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2315)

   With the cabin configured for take-off or landing, the aeroplane is designed to:

   [AMC1 23.2315 Means of egress and emergency exits](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2315#amc1-23-2315)

   [AMC2 23.2315 Means of egress and emergency exits](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2315#amc2-23-2315)

   [AMC3 23.2315 Means of egress and emergency exits](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2315#amc3-23-2315)

5. ## [CS 23.2320 Occupant physical environment](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2320)

   The applicant must design the aeroplane to: allow clear communication between the flight crew and passengers;

   [AMC1 23.2320 Occupant physical environment](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2320#amc1-23-2320)

   [AMC2 23.2320 Occupant physical environment](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2320#amc2-23-2320)

   [AMC3 23.2320 Occupant physical environment](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2320#amc3-23-2320)

6. ## [CS 23.2325 Fire protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2325)

   The aeroplane is designed to minimise the risk of fire initiation due to:

   [AMC1 23.2325 Fire protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2325#amc1-23-2325)

   [AMC2 23.2325 Fire protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2325#amc2-23-2325)

   [AMC3 23.2325 Fire protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2325#amc3-23-2325)

7. ## [CS 23.2330 Fire protection in designated fire zones](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2330)

   Flight controls, engine mounts, and other flight structures within or adjacent to designated fire zones must be capable of withstanding the effects of a…

   [AMC1 23.2330 Fire protection in designated fire zones](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2330#amc1-23-2330)

   [AMC2 23.2330 Fire protection in designated fire zones](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2330#amc2-23-2330)

   [AMC3 23.2330 Fire protection in designated fire zones](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2330#amc3-23-2330)

8. ## [CS 23.2335 Lightning protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2335)

   For operations where the exposure to lightning is likely, the aeroplane must be protected against catastrophic effects of lightning.

   [AMC1 23.2335 Lightning protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2335#amc1-23-2335)

   [AMC2 23.2335 Lightning protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2335#amc2-23-2335)

   [AMC3 23.2335 Lightning protection](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2335#amc3-23-2335)

9. ## [CS 23.2340 Design and construction information](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2340)

   The following design and construction information is established:

   [AMC1 23.2340 Design and construction information](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2340#amc1-23-2340)

   [AMC2 23.2340 Design and construction information](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2340#amc2-23-2340)

   [AMC3 23.2340 Design and construction information](https://avioverse.aero/regulations/easa/cs-23/subpart-d/cs-23-2340#amc3-23-2340)

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.

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