EASA Part-66 Licence Timeline: How Long It Really Takes

The Short Answer

For most candidates, the total time to earn an EASA Part-66 licence ranges from 1.5 to 5 years, depending on your chosen pathway and licence category. Here is the breakdown at a glance:

These timelines assume you are studying for and passing your Part-66 module exams while completing your training or accumulating experience — a strategy that saves significant time compared to completing all testing after your experience is done.

Step-by-Step Timeline Breakdown

Step 1: Meet Eligibility Requirements — 0 to 1 month

The eligibility requirements under 66.A.20 are minimal: you must be at least 18 years old and able to read, write, and communicate in the language of the examination — in practice English, the language of European maintenance documentation. There is no medical certificate requirement and no background check for the initial licence. Most candidates can confirm their eligibility in a matter of days.

While waiting, you can begin familiarising yourself with the structure of the Part-66 module exams and the general flow of the certification process. The earlier you understand what is ahead, the smoother each subsequent step will be.

Step 2: Complete Training or Start Gaining Experience — 2 to 5 years

This is the longest phase of the certification process, and your choice here makes the biggest difference to your total timeline.

Maintenance Training Organisation Pathway: 18 to 36 months

EASA-approved maintenance training organisations (MTOs, formerly Part-147 schools) offer programmes that typically run 18 to 36 months depending on the licence category. These programmes combine classroom instruction in the Part-66 modules with hands-on practical training, and they align their curriculum with Part-66 Appendix I. Institutions like Lufthansa Technical Training, CAE, and IAT all offer approved programmes. The major advantage of this route: recognised training reduces the experience requirement — from 5 years to 3 years for most B categories with a recognised technical diploma — so you reach certification sooner.

On-the-Job Experience Pathway: 2 to 5 years

If you go directly into aircraft maintenance work, 66.A.30 sets the minimum experience: 2 years for category A, 4 years for B1.2, 5 years for B1.1/B1.3/B2, and 2 years for B3. During this time you work in a maintenance environment — a Part-145 organisation, an airline base, or a GA shop — and document your experience in a logbook under the supervision of certifying staff. While the total clock time is longer, you are earning a salary from day one rather than paying tuition.

For a full breakdown of each pathway and how to choose between them, see our EASA Part-66 engineer career guide.

Step 3: Pass the Module Exams — 3 to 12 months (can run concurrently)

The Part-66 module exams — typically 12 to 14 modules depending on your category — are often taken DURING the training or experience phase rather than after it. This is the single most important time-saving strategy available to Part-66 candidates.

To begin testing, you register through your training organisation or directly with your national aviation authority. There is no eligibility endorsement form to obtain first, which removes an entire administrative step compared to some other systems. Module exam credits are valid for 10 years, and you may attempt each module a maximum of 3 times consecutively — after the third failed attempt you must wait one year, with at least 30 days between attempts. Plan your schedule accordingly.

Each module requires focused study time. Candidates using traditional textbook methods typically spend 3 to 6 weeks per module, meaning completing a full category set could take 8 to 14 months. However, candidates using adaptive study tools often compress this timeline significantly:

• Fundamentals modules (M1-M5) — Mathematics, physics and electrical/electronic fundamentals. Expect 3 to 5 weeks of dedicated study for most candidates.
• Structures and practices (M6-M10) — Materials, maintenance practices, aerodynamics, human factors, legislation. 4 to 8 weeks per module.
• Aircraft and propulsion modules (M11-M17) — The largest modules: M11, M13 and M15 carry the biggest question quotas. 8 to 14 weeks each.

By studying concurrently with your training or work experience, you can complete all your module exams within 3 to 12 months. Platforms like Skylicence Europe's AI-powered exam preparation help candidates complete modules faster by identifying weak areas and focusing study time where it matters most.

Step 4: Log Practical Experience — 2 to 5 years (experience path only)

As discussed in Step 2, your practical experience period runs concurrently with or after your training. The key point is that Part-66 requires a minimum of 2 to 5 years of documented experience depending on your category (66.A.30) for candidates who did not benefit from recognised MTO training. Your experience must be documented in a logbook, supervised by certifying staff, and organised across the subject areas relevant to your category.

For detailed guidance on documenting your experience properly, see our maintenance experience documentation guide.

Step 5: Assessment of Competence — 1 to 3 months preparation

Once you have passed the required module exams, B1 and B2 candidates must pass an assessment of competence (66.A.40) covering the practical tasks appropriate to the licence category. This is often described as the most demanding part of the process because it tests applied knowledge and real-world competence, not just textbook recall.

Most candidates spend 1 to 3 months preparing specifically for this assessment. Preparation involves practising the maintenance tasks in your experience log, reviewing maintenance data, and running through mock assessments with experienced engineers. Scheduling depends on your national authority or authorised training organisation — typically 2 to 8 weeks out.

Step 6: Licence Issuance — A few weeks to a few months

Once you have passed your module exams, completed the experience, and passed the assessment of competence, your national aviation authority issues the Part-66 licence. Processing times vary by authority — typically a few weeks — and your licence is recognised in every EASA member state. It remains valid for life provided you meet the continued-validity requirements.

How to Accelerate Your Timeline

While the certification process has regulatory minimums, several strategies can help you move through each phase faster:

• Start studying for modules early — Do not wait until you have finished your training or experience. Begin studying for the fundamentals modules (M1-M5) during your first months of school or work, then tackle the category-specific modules as your knowledge grows.
• Use adaptive study tools — Traditional textbook study is slow and inefficient. Adaptive platforms like Skylicence Europe focus your time on the specific modules where you need the most practice, cutting study time by 40-60% compared to self-study with textbooks alone.
• Choose the MTO pathway — While training takes 18-36 months of upfront time, recognised training cuts the experience requirement by up to 2 years, trimming your total timeline compared to the pure experience route.
• Parallel-track everything — Study for module exams while logging experience or attending training. Schedule your assessment of competence immediately after passing your last module exam.
• Prepare for the assessment early — Start practising the practical tasks at your workplace as soon as you begin. The more familiar you are with assessment expectations, the less dedicated prep time you will need at the end.

Real-World Example Timelines

Scenario A: MTO Graduate — ~2.5 years

• Months 1-24: Complete full-time MTO programme at a training organisation like Lufthansa Technical Training or CAE
• Months 12-26: Begin studying for and passing module exams (fundamentals first, then category-specific modules)
• Month 24: Graduate; recognised training reduces the experience requirement to 2-3 years, often partly covered by the practical phase of the course
• Months 25-28: Assessment of competence preparation and testing
• Month 29: Licence issued by the national aviation authority

Total: ~2.5 years — includes overlap between training and module study.

Scenario B: Full On-the-Job Experience — ~4-5 years

• Months 1-60: Full-time maintenance work at a Part-145 organisation or GA shop, documenting experience in a logbook under certifying staff supervision
• Months 6-54: Study for and pass all module exams for a B1.1 or B2 licence during employment
• Month 60: Experience requirement (5 years) completed
• Months 60-63: Assessment of competence preparation and testing
• Month 64: Licence issued

Total: ~5 years — drawn out by the full experience requirement, but accelerated by parallel module study.

Scenario C: Technician Licence Holder — ~2 years

• Months 1-24: Work as a technician while preparing for and passing the module exams
• Month 24: 2 years of recognised technician experience completed (66.A.30 credit for technician licence holders)
• Months 24-26: Assessment of competence preparation and testing
• Month 27: Licence issued

Total: ~2 years — the fastest path for candidates whose technician licence and experience are recognised.

Factors That Can Delay Your Timeline

Being aware of common delays helps you plan around them:

• Exam centre availability — Module exam slots at MTOs and CAA centres vary by region. In high-demand areas, you may need to book 2-4 weeks in advance.
• Exam failures — You must wait at least 30 days between attempts of the same module, and you may attempt each module a maximum of 3 times consecutively before a mandatory 1-year wait. Multiple failures can add months to your timeline. Thorough preparation is essential.
• Logbook documentation issues — Authorities may reject incomplete or improperly countersigned experience logs. Have your logbook reviewed by an experienced certifying engineer before submitting your application.
• Assessment scheduling — Assessment of competence slots depend on your national authority or authorised training organisation. In some states, the wait can be 4-8 weeks.
• Module credit expiry — Your module exam credits are valid for 10 years. If you let them lapse, you must retake the modules before certification.
• Personal circumstances — Work schedules, family obligations, and financial constraints can all affect how quickly you move through the process.

B1 vs B2 vs A: Does One Licence Take Longer?

B1.1, B1.3 and B2 licences require the same minimum experience (5 years, or 3 with a recognised technical diploma), while B1.2 requires 4 years (3 with recognised training) and category A and B3 require only 2 years. The choice of category does not dramatically change the total timeline — the bigger differences come from the module sets and the depth of the assessment of competence. See our EASA Part-66 exam structure guide for the exact differences between the licence categories.

How Skylicence Europe Helps You Move Faster

The single biggest controllable factor in your Part-66 timeline is how quickly you pass the module exams. Traditional study methods — reading textbooks, taking handwritten notes, and creating your own practice tests — are time-intensive and inefficient. Skylicence Europe's AI-powered platform gives you a measurable speed advantage:

• Adaptive learning — The AI identifies your weak areas and generates questions at calibrated difficulty levels, focusing your study time where it has the most impact.
• Full Part-66 coverage — 4,464 questions across all 17 modules (Appendix I) and all 8 licence categories, so you never waste time studying material that will not appear on your module exams.
• Real-time feedback — Every question includes a detailed explanation with references to Part-66 and EASA guidance material. You learn why each answer is correct, not just which answer to pick.
• Performance analytics — Track your progress across every module and knowledge level. Always know exactly how ready you are for each exam.
• Exam simulations — Timed practice exams replicate the official module question quotas and time limits, so you walk into the exam centre knowing what to expect.

Candidates using Skylicence Europe consistently report reducing their total exam preparation time by 40-60% compared to self-study with textbooks alone. In a process where every month saved gets you closer to your licence and a full-time licensed engineer's salary, that efficiency makes a real difference.

Start your EASA Part-66 exam preparation with Skylicence Europe →