Certification Specification 25 (CS 25) Training Course – 5 Days

Certification requirements for civil [commercial] aircraft are derived from ICAO Annex 8 Airworthiness of Aircraft together with ICAO Airworthiness Manual, Part V State of Design and State of Manufacture. Each ICAO contracting state is obligated to establish its own legal framework. Within the European Community this activity is undertaken by EASA essentially harmonised with the FAA.

EC Regulation 748/2012 provides Procedures for certification of aeronautical products (aircraft, engines and propellers). Known as EASA Part 21 regulations they include both procedures for design organisation approval (DOA) (Sub-part J) and production organisations approval (POA) (Sub-part G)

There are a series of technical codes which must be followed to ensure the design of the various products and parts are fully compliant with all certification requirements. Related to Large Aircraft this Technical Code is known as CS-25 Large Aeroplane Certification
The CS 25 Large Aircraft Certification training provides the delegates with a basic knowledge of the typical certification processes related to large airplanes.

The course reviews the regulatory background driven by ICAO, JAA, FAA and EASA. Consideration is given to the technical aspects regarding systems and avionics, cabin and structure; certification topics. The Intent of this course focuses on a needs driven agenda rather than a line by line review of the various requirements.

What is the Benefit of this Training – What will I learn?

To achieve a basic understanding of Certification Specifications CS-25 together with an overview of the key fundamentals of Large Aeroplanes certification

To understand in details the Certification Process related to Large Turbine Powered Aeroplanes

To be able to use the regulatory information to document and demonstrate compliance

To Understand the Safety Assessment Process Related to CS25-1309

Why Should I choose SAS for the training?

Sofema Aviation Services a Regulatory training and consulting company with 45 years of commercial aviation experience and 10 years operational experience. Since we started we have provided certificates to approx 15,000 delegates we have grown for 2 primary reasons!

The first is that we are professional and we listen to our customers. Please visit our download area as an example of how we engage with our customer.

The second is not only the fact that our prices are far more cost effective than our competitors it is that our discount program leaves all the others way behind – please do not take our word for it check it out! SAS Discount Program

What Makes SAS Certification Specification 25 (CS 25) Training Course – 5 Days different?

Because our courses are written by people who have lived through the regulations. The author of the training material has more than 25 years’ experience as an auditor across the entire regulatory spectrum.

At Sofema Aviation Services our focus is on accepting that compliance with Regulations is in fact minimum compliance. Interpreting the regulations in a way which enables the development and optimisation of our business is where we should see opportunity to drive efficiencies and cost saving.

Detailed Content / Topics – The following Subjects will be addressed

- Regulatory Background (ICAO, JAA, FAA, EASA)
- Working with EASA
- EASA Part 21 Certification Process, Compliance Showing, Configuration Control,
- Flight Test Overview, Flight Manual Supplements, Instruction for Continued Airworthiness (ICA).
- Operational Suitability Data (OSD)
- Understand the Safety Assessment Process Related to CS25-1309
- CS-25 introduction
- CS-25 Subpart C – Structure.
- CS-25 Subpart D – Design and Construction.
- CS-25 Subpart F – Equipment.
- CS-25 Subpart G – Operating Limitations and Information.
- CS 25 Subpart H Electrical Wiring Interconnect Systems (EWIS)
- CS 25 Appdx H — Instructions for Continued Airworthiness
- CS 25 Appdx R — HIRF environments and equipment HIRF test levels
- Classification of changes
- Type Certification Data Sheets & Type Certification Basis
- Changed Product Rule (CPR)
- System Safety Analysis
- Enhanced Airworthiness Program for Aeroplane Systems and how does it affect us.
- Common AMC Material and other related certification Guides
- Current Certification Issuers and challenges
- General Review of Cabin Configurations
- Refurbishment and LOPA changes
- Crashworthiness Considerations
- Flammability
- Structure General Introduction
- Introduction, Fatigue and Damage Tolerant, Crashworthiness
- Radio Technical Commission for Aeronautics (RTCA) and European Organisation for Civil Aviation Equipment (EUROCAE) Documents
- Considering OEM Documentation & Other standards such as SAE, MIL etc.
- Conditions for flight/Permit to Flight

Target groups 

The course is intended for personnel involved in the design of changes to TC, RTC or STCs in the Design Organisation (DOA), or individuals intending to apply for minor changes. The course is also suitable for persons involved directly or indirectly with the System Safety Assessment process.


Familiarity with terminologies and concepts of design and initial airworthiness.

Learning Objectives 

To equip the delegates with the basic understanding related to the certification requirements for turbine powered large aeroplane. Additionally to understand how to demonstrate compliance with the certification specification.


5 days – Each Training day will start at 09.00 and finish at 17.00, with appropriate refreshment breaks.

To register for this training, please email office@sassofia.com or Call +359 28210806

Discount Program

Multi Delegate Discount
· For 2 Delegates (or 1 Delegate attending 2 Trainings) we offer 15% Discount for each Delegate
· For 3 Delegates (or 1 Delegate attending 3 Trainings) we offer 25% Discount for each Delegate
· For 4 Delegates we offer 4 for the price of 3 special offer.

Early Bird Discount
· For 1 person – 15 %
· For 2 persons, we will add additional 5 %
· For 3 persons, we will add also additional 5 %

The Early Bird Discount Program is applicable for bookings taken and payment received more than 4 weeks before commencement of the training!

You can combine the Multi Delegate and Early Bird discount programs, and to receive up to 30 % discount for all required trainings!

Check all discounts

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