Certification Specification 25 (CS-25)

This course provides design, certification and continuing-airworthiness personnel with a structured understanding of CS-25 and its application to the certification of large aeroplanes and changes to them, from the certification basis to the demonstration of compliance. By the end of the course, participants will be able to:

1. Explain the structure of CS-25 Book 1 and Book 2 and its link with Part-21

2. Establish a certification basis, including special conditions, ELOS and changed product rule

3. Interpret the key requirements of each CS-25 Subpart and associated AMC

4. Select appropriate means of compliance and plan a certification programme

5. Understand the certification aspects of typical modifications: cabin, avionics, connectivity

6. Understand EWIS, HIRF, lightning and system safety requirements

7. Understand AFM supplements, ICA and OSD resulting from a design change

8. Work effectively with EASA through the CRI process and compliance documentation

1: Regulatory Background

2: Subpart B: Flight

3: Subparts C & D: Structure, Design & Construction

4: Subparts E & J: Powerplant and APU

5: Subpart F: Equipment

6: Subparts G & H: Limitations and EWIS

7: Showing Compliance

8: Practical Exercise