CS 23.2500 General requirements on systems and equipment function

ASTM F44 F3264 Standard Specification for Normal Category Aeroplanes Certification

9.1 Systems and Equipment Function Requirements 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 F3229/F3229M-23a Standard Practice for Static Pressure System Tests in Small Aircraft F3064/F3064M-21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication F3066/F3066M-18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation F3117/F3117M-24a Standard Specification for Crew Interface in Aircraft F3120/F3120M-20 Standard Specification for Ice Protection for General Aviation Aircraft F3408/F3408M-21 Standard Specification for Aircraft Emergency Parachute Recovery Systems

Remarks F3061/F3061M-24a Standard Specification for Systems and Equipment in Small Aircraft At variance with F3061-24a, paragraph 4.4.2, use of system level verification is usually not acceptable, and it should be discussed with EASA. F3532-25 Standard Practice for Protection of Aircraft Systems from Intentional Unauthorized Electronic Interactions At variance with F3532 and F3061-24a, paragraph 4.3, for showing compliance with CS 23.2500(b) for equipment and systems whose improper functioning could lead to an intentional unauthorised electronic interaction (IUEI) For an aeroplane with assessment level IV, the applicant may consider AMC 20-42. For an aeroplane with assessment level I, level II or level III, the applicant may consider ASTM F3532-25. For an aeroplane with certification level 1, operated in visual flight rules (VFR) day or night, considerations of cybersecurity threats as potential sources of improper functioning of the equipment and systems are not required. 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]

CS-23 Amdt 4

23.1301 Function and installation

23.1303 Flight and navigation instruments

23.1305 Powerplant instruments

23.1309(a) Equipment, systems, and installations

23.1311 Electronic display instrument systems

23.1321 Arrangement and visibility

23.1323 Airspeed indicating system

23.1325 Static pressure system

23.1327 Magnetic direction indicator

23.1329 Automatic pilot system

23.1335 Flight director systems

23.1351(b), (e), (f), (g) Electrical Systems - General

23.1357 Circuit protective devices

23.1361 Master switch arrangement

23.1367 Switches

23.1381(c) Instrument lights

23.1416 Pneumatic de-icer boot system

23.729(d) Landing gear extension and retraction system

23.843(b) Pressurization tests

23.1141(b), (c), (d) Powerplant controls: general

23.1201 Fire extinguishing system materials

23.1203(e) Fire detector system

Remarks

23.1305 must be complemented. F3064-18 § 6.2.1.6 provides this AMC.

CS VLA Amdt 1 VLA.1301 Function and installation VLA.1303 Flight and navigation instruments VLA.1305 Powerplant instruments VLA.1307 Miscellaneous equipment VLA.1309 Equipment, systems, and installations VLA.1321 Arrangement and visibility VLA.1323 Airspeed indicating system VLA.1325 Static pressure system VLA.1327 Magnetic direction indicator VLA.1351 Electrical Systems - General VLA.1357 Circuit protective devices VLA.1361 Master switch arrangement VLA.1367 Switches VLA.729 Landing gear extension and retraction system VLA.1141 Powerplant controls and accessories: general

Remarks VLA.1305 must be complemented. F3064-18 § 6.2.1.6 provides this AMC.