How long does it take to become a B1 Licensed Aircraft Engineer?
Becoming a B1 Licensed Aircraft Engineer is a long-term career path, but there is no single timeframe that applies to everyone.
The time it takes depends on your previous training, the B1 licence category you are working towards, how you complete your Part-66 modules and the amount of practical maintenance experience you need to gain.
Here’s what to expect from the process.
HOW LONG DOES IT TAKE TO BECOME
A B1 ENGINEER?
For someone starting from scratch, becoming a B1 Licensed Aircraft Engineer can take several years.
The process broadly involves:
- Completing the required Part-66 knowledge modules
- Gaining the necessary practical aircraft maintenance experience
- Applying for your Aircraft Maintenance Licence (AML)
- Completing aircraft type training for the aircraft you want to work on
The exact timeframe varies depending on your route into the industry.
HOW LONG DOES TRAINING TAKE?
The exact timeframe varies depending on your route into the industry.
Many aspiring engineers complete an approved Part-147 training programme, while others complete their Part-66 examinations alongside gaining relevant maintenance experience.
Your training route can make a significant difference to the overall timeframe. Approved Part-147 training can reduce the amount of practical experience required, depending on the licence category and training completed.
This means two people working towards the same B1 licence may take different amounts of time to qualify.
HOW MUCH EXPERIENCE DO YOU NEED
FOR A B1 LICENSE?
Practical experience is a major part of becoming a B1 Licensed Aircraft Engineer.
Under UK Part-66 requirements, the experience needed depends on your licence category and previous training.
For example, the requirements for B1.1 and B1.3 differ from B1.2 and B1.4. Your previous approved training can also affect the experience requirement.
Your experience must be relevant aircraft maintenance experience and meet the requirements set by the UK CAA.
DOES PASSING B1 EXAMS MEAN YOU ARE LICENSED?
No.
Passing your Part-66 examinations is an important step, but it does not automatically make you a Licensed Aircraft Engineer.
You need to meet both the relevant knowledge and practical experience requirements before applying for your Aircraft Maintenance Licence.
In simple terms:
Part-66 modules
>
Practical experience
>
B1 Aircraft Maintenance License
Once you have your licence, you can then continue developing your experience and qualifications on specific aircraft types.
HOW LONG DOES B1 TYPE TRAINING TAKE?
Getting your B1 licence is not necessarily the end of your training.
If you want to work on a particular aircraft type, you will generally need relevant type training and, where applicable, on-the-job training.
The length of this training varies depending on the aircraft type and training programme.
For example, an engineer looking to work on commercial aircraft may need additional type training before exercising certification privileges on that aircraft.

WHAT CAN AFFECT HOW QUICKLY YOU QUALIFY?
Several factors can speed up or extend your route to becoming a B1 Licensed Aircraft Engineer:
Your training route
Approved Part-147 training can affect the practical experience requirements you need to meet.
Your licence category
B1.1, B1.2, B1.3 and B1.4 have different requirements.
Your previous experience
Relevant aircraft maintenance experience and existing technical qualifications may affect your route.
Your access to practical experience
You need to gain relevant maintenance experience, so the opportunities available through your employer or training provider can influence your progress.
Your examination progress
Completing the required Part-66 modules is another key stage of the process.
START YOUR CAREER AS A B1 LICENSED AIRCRAFT ENGINEER
There is no one-size-fits-all timeframe for becoming a B1 Licensed Aircraft Engineer. Your route, training and practical experience will all influence how quickly you qualify.
For anyone considering a career in aircraft maintenance, understanding these requirements early can help you choose the right training route and plan your career progression.
LOOKING FOR YOUR NEXT AIRCRAFT ENGINEERING OPPORTUNITY?
Speak to the recruitment specialists at Meritus about current opportunities across Aerospace, Defence, and Aviation sectors.















