Certification Specification 25 (CS 25) Training Course – 5 Days – Otopeni, Romania

Course Details Summary

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

Duration – The course will run from 9 am to 5 pm from November 15th to November 19th 2021

Latest Course Confirmation Deadline – 01.11.2021 (10 Business Days from Delivery)
Please Note – Provisional Delegates will be informed as soon as the minimum attendance number is reached

Location of the Course – RAS Technic Facilities, Otopeni, Romania

Course Fee – For 1 person 1415 EUR

(2 Persons Discount 15% Each – 3 Persons Discount 25% Each)

Course Fee includes – Registration, materials, coffee breaks and lunch break, Certificate on completion of the training

Examination Included – No

Certificates Issued for the Course – Presentation Certificate YES / Certificate with Detailed Wording YES

Certificate Wording – EASA CS25 (Large Aircraft) familiarisation course incorporating the relevant aspects of Part 21 relating to Subpart J, Application of Part 21 within the design and certification context and the application of CS 25 in showing of compliance (Subparts A, B, C, D, F, G and H)

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

Detailed Content / Topics – The following Subjects will be addressed

Day 1

  • Definitions & Abbreviations
  • Airworthiness System Considerations
  • Regulatory Background (ICAO, JAA, FAA, EASA)
  • EASA Part 21 Introduction

Day 2

  • Design Aspects of Airworthiness
  • EASA Part 21 Design Certification – Proportionality & Level of Involvement
  • Introduction to Aircraft Certification Specification CS 25
  • CS25 Airworthiness Code (Certification Specification)
  • CS 25 – Safety Assessment CS25-1309
  • Flight Test Overview
  • Flight Manual & Supplements
  • Developing & Managing Instructions for Continued Airworthiness ICAW
  • CS 25 Appdx H — Instructions for Continued Airworthiness
  • Operational Suitability Data (OSD)
  • Subpart B – Flight

Day 3

  • CS-25 Subpart C – Structure
  • Subpart D – Design and Construction
  • CS-25 Subpart F – Equipment
  • CS-25 Subpart G – Operating Limitations and Information.
  • Enhanced Airworthiness Program for Aeroplanes Systems (EAPAS)
  • CS 25 Subpart H Electrical Wiring Interconnect Systems (EWIS)
  • CS 25 Appdx R — HIRF environments and equipment HIRF test levels
  • EASA Part 21 Certification Process, Compliance Showing, Configuration Control

Day 4

  • Classification of Changes
  • Type Certification Data Sheets & Type Certification Basis
  • Current Certification Issuers and Challenges
  • Cabin Refurbishment and LOPA Changes Considerations
  • Flammability

Day 5

  • Aircraft Certification Crashworthiness and Survivability
  • Structure General Introduction
  • CS 25 Equipment Standards – RTCA / EUROCAE
  • Certification and Approval Process EASA ETSO
  • Considering Other Standards such as SAE, MIL etc.
  • Subpart P – Permit to Fly

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.

Certificates Wording

EASA CS25 (Large Aircraft) familiarisation course incorporating the relevant aspects of Part 21 relating to Subpart J, Application of Part 21 within the design and certification context and the application of CS 25 in showing of compliance (Subparts A, B, C, D, F, G and H)

What do People Say about Sofema Aviation Services Training?

“The instructor used the right words to explain the material.”
“The discussions among the group were very beneficial.”
“The instructor showed a very resourceful background and experience.”
“All sections of the course were related to my field.”
“Adequate answers were given to specific questions.”


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 team@sassofia.com or Call +359 28210806

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Course Details

Start Date: November 15, 2021

End Date: November 19, 2021

1415 EUR

RAS Technic Facilities, Otopeni, Romania

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