Why EASA Part 147 Training Is the Foundation of Compliant Aircraft Maintenance
What is EASA Part 147 training? It is a regulated framework that sets the standards for organizations approved to deliver aircraft maintenance training, covering everything from basic knowledge courses to aircraft type training, and forming the backbone of the EASA Part 66 Aircraft Maintenance Licence (AML) pathway.
Here is a quick summary:
| Element | What it means |
|---|---|
| Regulatory basis | Commission Regulation (EU) No 1321/2014, updated by (EU) 2023/989 |
| Who it governs | Approved Maintenance Training Organizations (AMTOs) |
| What it covers | Basic training (Part 66 modules) and aircraft type training |
| Who attends | Technicians, certifying staff, and engineers seeking Part 66 licensing or type ratings |
| Key output | Certificate of Recognition (CoR), used to support Part 66 AML applications |
| Who oversees it | EASA and National Aviation Authorities (NAAs) within Member States |
If you manage maintenance training at a Part-145 maintenance organization or CAMO, understanding this framework is essential. It directly affects whether your certifying staff are trained to a standard that regulators will accept, and whether that training counts toward their licensing.
Maintenance managers must ensure training compliance. Sourcing approved training and aligning courses with operational requirements are regulatory necessities. Failure to adhere to the framework creates compliance gaps that are difficult to rectify.
I’m Andy Trinchero, Chairman of the Academy Aviation Group, and with over 20 years of experience in aviation training management across EASA, FAA, and other regulatory frameworks, I have seen how critical a clear understanding of what is EASA Part 147 training is for building a compliant maintenance workforce. In the sections below, I’ll break down exactly how this framework works and what it means for your operation.

What is EASA Part 147 Training?
At its core, EASA Part 147 is the European regulation that governs Maintenance Training Organizations (MTOs). While Part 66 defines the knowledge requirements for an individual technician, Part 147 establishes the organizational standards for delivery. It defines the requirements for facilities, personnel, and quality systems.
Under Regulation 1321/2014, any organization that wants to conduct examinations or provide training that leads to a Part 66 license must hold an EASA Part 147 Approval. This approval requires the organization to demonstrate to EASA or a National Aviation Authority that they maintain the necessary facilities, qualified instructors, and a robust quality management system.
For a deeper dive into the regulatory specifics, you can always consult the Official EASA Part-147 FAQ, which clarifies many of the technical boundaries of these approvals.
Defining What is EASA Part 147 Training for Technicians
For the individual technician, Part 147 training is the pathway to obtaining certifying staff privileges. It is the process of gaining the specific knowledge and practical skills required to issue a certificate of release to service.
Key elements of this training include:
- Certifying Staff Development: Training is designed to prepare individuals for the responsibilities of certifying that an aircraft is airworthy.
- Competence Management: It ensures that staff possess the competence to perform tasks safely.
- Certificate of Recognition (CoR): This is the official document issued upon successful completion of a course. It is the only document a licensing authority will accept as proof of training.
- Training Needs Analysis (TNA): Approved organizations must conduct a TNA for every course to ensure the curriculum covers all necessary regulatory and technical requirements.
The Importance of What is EASA Part 147 Training for Compliance
From a management perspective, Part 147 training is about risk mitigation. When you send your team to an approved organization, you are ensuring EASA Certified Maintenance Training that aligns with the highest safety standards.
Compliance is maintained through rigorous quality oversight. An approved MTO must have an independent audit function that regularly checks training standards and examination integrity. This ensures that the training your staff receives is consistent, regardless of whether it happens in a classroom in Europe or on-site at your facility in Dubai or the USA.
Core Components of Approved Maintenance Training
EASA Part 147 training is generally split into two main streams: Basic Training and Aircraft Type Training. Both are essential, but they serve very different purposes in a technician’s career. You can explore our range of EASA Compliant Courses to see how these are structured in practice.
Basic Training and Module Requirements
Basic training covers the fundamental knowledge required for the initial issue of a Part 66 Aircraft Maintenance Licence. This is organized into specific modules (such as Mathematics, Physics, and Electrical Fundamentals) depending on the license category:
- Category A: Line Maintenance Mechanic.
- Category B1: Maintenance Engineer (Mechanical).
- Category B2: Maintenance Engineer (Avionics).
One significant benefit of completing a full basic training course at an approved Part 147 organization is the potential for experience reduction. For many, the required years of practical experience can be reduced to just one or two years if they graduate from a full, approved basic training course.
Aircraft Type Training Specifications
Once a technician has a basic license, they need “Type Training” to work on specific aircraft models. This training is divided into a theoretical element and a practical element.
According to EASA Type Training Guidance, there are strict rules for these courses:
- Theoretical Element: Classroom-based learning covering all systems of the aircraft.
- Practical Element: Hands-on training where technicians perform tasks on the actual aircraft or a sophisticated simulator.
- The 30,000 kg Threshold: For large aircraft with a Maximum Take-Off Mass (MTOM) of 30,000 kg or more, EASA recommends that the practical element be no less than two weeks in duration.
- Task Selection: At least 50% of the tasks in the practical logbook must be completed during the practical phase, ensuring a representative cross-section of complexity and diversity.
We take these requirements seriously, as seen in our specialized approvals, such as the EASA Part 147 G200 Approval, which allows us to provide specific, high-level training for complex airframes.
Key Requirements for Approved Training Organizations

To maintain their status, Part 147 organizations must adhere to strict operational requirements. These are documented in the Maintenance Training Organisation Exposition (MTOE), which serves as the primary reference for regulatory compliance. Our team at Academy Aviation Group ensures that Our Services EASA Part 147 Training always meet these benchmarks.
Facility and Equipment Standards
A Part 147 organization must provide facilities that meet specific environmental and technical standards, including:
- Controlled Classroom Environments: Proper lighting, temperature control, and noise insulation to facilitate learning.
- Instructional Aids: Access to technical manuals, synthetic training devices, and aircraft components.
- Tooling and Equipment: For practical training, students must have access to the same tools they would use on the job.
Student and Instructor Ratios
To ensure training quality, EASA mandates specific student to instructor ratios.
- Theory Classes: Limited to a maximum of 28 students per class.
- Practical/Shop Classes: Usually limited to a 15 to 1 ratio (though FAA standards often allow up to 25 to 1, EASA focuses on smaller groups for hands-on safety).
Instructors are also held to high standards. They must possess technical expertise in the subject matter and pedagogical skills. EASA does not issue individual Instructor Licenses. Instead, the Part 147 organization is responsible for qualifying and nominating its own instructors based on proven competence.
Comparing EASA Part 147 and FAA Part 147 Standards
While both EASA and the FAA aim for the same goal (safe aircraft), their training frameworks are quite different. If you operate a fleet that spans both registries, understanding these nuances is vital.
| Feature | EASA Part 147 | FAA Part 147 |
|---|---|---|
| Primary Goal | Support Part 66 Licensing | Support Mechanic Certification (A&P) |
| Course Approval | Formally “Approved” by Authority | “Accepted” via Operations Specs |
| Ratios | Max 28 for Theory | Max 25 for Shop |
| Testing | Internal Exams monitored by NAA | FAA Written, Oral, and Practical tests |
| Pass Rates | At least 75% pass mark | Must maintain 70% pass rate for tests |
For those looking for the legal text on the American side, the FAA Part 147 Regulations provide the full scope of requirements for Aviation Maintenance Technician Schools.
Differences in Licensing Pathways
The EASA pathway is highly modular. A technician can take individual module exams over a long period. The FAA pathway is generally more integrated, leading to a Mechanic Certificate with Airframe and/or Powerplant ratings.
Mutual recognition is also a complex area. A Certificate of Recognition from an EASA Part 147 school is not automatically accepted by the FAA as a credit toward an A&P license, and vice versa. Each authority has specific bridging requirements that must be met.
Recent Regulatory Updates
The landscape is always shifting. There is now a greater emphasis on integrated management systems and the formalization of distance learning.
Since the global shift in 2020, virtual classrooms have become a permanent fixture. However, they are still strictly regulated to ensure they meet the same pedagogical standards as physical classrooms. We stay ahead of these changes through our various approvals, including our UK CAA Part 147 Approval, ensuring our global clients remain compliant regardless of the latest regulatory “hot fix.”

Frequently Asked Questions about Part 147
Is Part 147 training mandatory for a Part 66 license?
Technically, it is possible to take Part 66 module exams at a competent authority without attending a Part 147 course (the self-study route). However, you lose the benefit of reduced experience requirements. Furthermore, for Aircraft Type Ratings, attending an approved Part 147 course is mandatory for the rating to be endorsed on your license.
Can type training be conducted at a Part-145 maintenance organization?
Yes, but with a major caveat. The training must be conducted under the control and approval of a Part 147 organization. The Part-145 maintenance organization provides the hangar and the aircraft, but the Part 147 organization provides the quality oversight, the instructors, and issues the final Certificate of Recognition. A Part-145 cannot issue a Part 147 certificate on its own.
What certificates are issued upon course completion?
The primary document is the Certificate of Recognition (CoR). This certificate states exactly what training was completed (Basic or Type), whether it included the theoretical and/or practical elements, and confirms that the student passed the relevant examinations or assessments.
Conclusion
Understanding what is EASA Part 147 training is a regulatory necessity. It ensures that the certifying staff responsible for airworthiness are trained to a globally recognized standard. Whether managing a training department or planning a licensing pathway, the Part 147 framework provides the required structure.
At Academy Aviation Group, we navigate these complexities to support your regulatory requirements. From on-site type training to online theory modules, our specialized units are designed to support your specific regulatory pathway.
To ensure your team meets the required standards, we invite you to confirm the correct training path for your fleet by reaching out to our experts today. We are here to help you keep your operations safe, compliant, and ready for the future.






