EASA CS-25 Avionics System – Module 2

Historical introduction

The legacy page states that the course aimed to introduce EASA Certification Specifications in theory and with a practical approach on avionics systems.

Historical objectives

• Educate and train the candidate about key elements to consider in CS-25 for avionics-system installation or modification in large aircraft, using the Flight Management System (FMS) as an example
• Enable the candidate to justify and select specific CS-25 requirements to qualify and meet compliance for an avionics system
• Explain the safety implication and functional requirements on avionics systems to comply with CS-25 safety objectives
• Train candidates to understand the importance of lightning effect, HIRF, EMI, and system testing in order to adhere to CS-25 requirements and associated MOCs

Historical curriculum

• Understanding of CS-25 in respect to avionics systems and requirements for system installation/modification in large aircraft, AMC/GM
• How to be selective in CS-25 requirements for avionics systems without compromising safety objectives
• Safety aspects of CS-25 for avionics systems and protection against fire, smoke, lightning, HIRF and EMI
• Discussion on subjective topics related to commonly installed avionics systems
• General practices in avionics-system installation/modification and design consideration for showing compliance to CS-25

Historical suitable-for context

Part 21J (DOA) Office of Airworthiness, Avionics Compliance Verification Engineer, avionics design engineer / team leader, and individuals involved in certification of avionics-system installation or modification in large aircraft.

Alternate Part 21J (ADOA) applicants involved in design and modification of avionics systems and their certification process and procedures.

Part 145 large-aircraft inspectors, certifying staff and continued-airworthiness managers involved in avionics-system maintenance, operation and instruction for continued airworthiness.

Individuals, consultants or organisations involved in minor/major (STC) modification and/or repair in large aeroplanes in terms of avionics systems.

Part-M Subpart G (CAMO) organisation managers, post-holder maintenance managers and quality-control personnel involved in continued airworthiness of aircraft avionics systems (ATA chapters 23, 34 and 42).

Historical prerequisite context

CS-25 Module 1 Training

Historical regulatory / reference context

• EASA Certification Specifications and Acceptable Means of Compliance for Large Aeroplanes CS-25, latest amendment
• EASA AMC 25.1309 System Design Safety and Analysis
• FAA AC 25-16, Electrical Fault and Fire Prevention and Protection