CS 23.2605 Installation and operation information

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

IRImplementing rule

CS 23.2605Installation and operation information

(a)Each item of installed equipment related to the flight crew interface must be labelled, if applicable, as for its identification, function, or operating limitations, or any combination of these factors.

(b)There must be a discernible means of providing system operating parameters required to operate the aeroplane, including warnings, cautions, and normal indications, to the responsible crew member.

(c)Information concerning an unsafe system operating condition must be provided in a timely manner to the crew member responsible for taking corrective action. The information must be clear enough to avoid likely crew member errors.

(d)Information related to safety equipment is easily identifiable and its method of operation is clearly marked.

IR · CS 23.2605 — CS-23 · ED Decision 2017/013/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMCAcceptable means of compliance

AMC1 23.2605Installation and operation information

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ASTM F44 F3264 Standard Specification for Normal Category Aeroplanes Certification

10.2 Installation and Operation Information F3061/F3061M-24a Standard Specification for Systems and Equipment in Small Aircraft F3232/F3232M-25 Standard Specification for Flight Controls in Small Aircraft F3233/F3233M-23b Standard Specification for Flight and Navigation Instrumentation in Aircraft F3231/F3231M-24 Standard Specification for Electrical Systems for Aircraft with Combustion Engine Electrical Power Generation F3062/F3062M-20 Standard Specification for Aircraft Powerplant Installation F3063/F3063M-21 Standard Specification for Aircraft Fuel Storage and Delivery F3064/F3064M-21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication 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 F3227/F3227M-25 Standard Specification for Environmental Systems in Aircraft At variance with F3227-25, Oxygen Fire Hazards Analysis is not completely covered in current ASTM standards. At variance, additional means of compliance have been developed by EASA for this specific application. [AMC & GM to CS-23: Issue 4] [AMC & GM to CS-23: Issue 5]

AMC · AMC1 23.2605 — CS-23 · ED Decision 2026/003/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMCAcceptable means of compliance

AMC2 23.2605Installation and operation information

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CS-23 Amdt 4

23.671(b) Control systems - General

23.672(a) Stability augmentation and automatic and power-operated systems

23.679(a), (b) Control system locks

23.703 Take-off warning system

23.729(f) Landing gear extension and retraction system

23.783(e)(3) Doors

23.841(b)(5), (b)(6), (d)(4), (d)(5) Pressurised cabins

23.991(c) Fuel pumps

23.1142 Auxiliary power unit controls

23.1301(b) Function and installation

23.1305 Powerplant instruments

23.1309(d) Equipment, systems, and installations

23.1322 Warning, caution and advisory lights

23.1326 Pitot heat indication systems

23.1329(h) Automatic pilot system

23.1331(a) Instruments using a power source

23.1335 Flight director systems

23.1337(b), (d) Powerplant instruments installation

23.1351(c), (d) Electrical Systems - General

23.1416(c) Pneumatic de-icer boot system

23.1441(c) Oxygen Equipment and supply

23.1561 Safety equipment

Remarks

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

AMC · AMC2 23.2605 — CS-23 · ED Decision 2019/020/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMCAcceptable means of compliance

AMC3 23.2605Installation and operation information

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CS VLA Amdt 1 VLA.671 Control systems - General VLA.679 Control system locks VLA.729 Landing gear extension and retraction system VLA.783 Doors VLA.991 Fuel pumps VLA.1301 Function and installation VLA.1305 Powerplant instruments VLA.1309 Equipment, systems, and installations VLA.1322 Warning, caution and advisory lights VLA.1331 Instruments using a power supply VLA.1337 Powerplant instruments VLA.1351 Electrical Systems - General VLA.1561 Safety equipment

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

AMC · AMC3 23.2605 — CS-23 · ED Decision 2019/020/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

All rules in SUBPART G — FLIGHT CREW INTERFACE AND OTHER INFORMATION

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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