CS 23.2250 Design and construction principles

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

IRImplementing rule

CS 23.2250Design and construction principles

(a)Each part, article, and assembly must be designed for the expected operating conditions of the aeroplane.

(b)Design data must adequately define the part, article, or assembly configuration, its design features, and any materials and processes used.

(c)The suitability of each design detail and part having an important bearing on safety in operations must be determined.

(d)The control system must be free from jamming, excessive friction, and excessive deflection when the aeroplane is subjected to expected limit air loads.

(e)Doors, canopies, and exits must be protected against inadvertent opening in flight, unless shown to create no hazard, when opened in flight.

IR · CS 23.2250 — CS-23 · ED Decision 2017/013/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMCAcceptable means of compliance

AMC1 23.2250Design and construction principles

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ASTM F44 F3264 Standard Specification for Normal Category Aeroplanes Certification

6.11 Design and Construction Principles F3061/F3061M-24a Standard Specification for Systems and Equipment in Small Aircraft F3232/F3232M-25 Standard Specification for Flight Controls in Small Aircraft F3114-21 Standard Specification for Structures F3380-19 Standard Practice for Structural Compliance of Very Light Aeroplanes F3408/F3408M-21 Standard Specification for Aircraft Emergency Parachute Recovery Systems [AMC & GM to CS-23: Issue 4] [AMC & GM to CS-23: Issue 5]

AMC · AMC1 23.2250 — CS-23 · ED Decision 2026/003/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMCAcceptable means of compliance

AMC2 23.2250Design and construction principles

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CS-23 Amdt 4

23.601 General

23.603 Materials and workmanship

23.683 Operation tests

23.687 Spring devices

23.689 Cable systems

23.731 Wheels

23.733(a), (c) Tires

23.735(b) Brakes

23.775(b), (c), (d) Windshields and windows

23.783(b), (c)(1), (e) Doors

23.807(d)(2) Emergency Exits

23.859(b) through (i) Combustion heater fire protection

23.1323 Airspeed indicating system

23.1325(a) through (e) Static Pressure System

23.1435(a)(3), (c) Hydraulic Systems

23.1445(a), (b) Oxygen distribution system

AMC · AMC2 23.2250 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMCAcceptable means of compliance

AMC3 23.2250Design and construction principles

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CS VLA Amdt 1 VLA.601 General VLA.603 Materials and workmanship VLA.683 Operation tests VLA.687 Spring devices VLA.689 Cable systems VLA.731 Wheels VLA.733 Tires VLA.735 Brakes VLA.775 Windshields and windows VLA.783 Exits VLA.807 Emergency Exits VLA.1323 Airspeed indicating system VLA.1325 Static Pressure System VLA.1436 Hydraulic manually-powered brake systems

AMC · AMC3 23.2250 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

All rules in SUBPART C — STRUCTURES

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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