Maintenance License Part 66
Applicable categories
Category B1
Subcategory B1.1: Turbine-powered aircraft
Subcategory B1.2: Piston engine aircraft
Subcategory B1.3: Turbine-powered helicopters
Subcategory B1.4: Piston-engine helicopters
(Each subcategory of B1 will automatically include the corresponding subcategory of A)
Category B2
B2 Avionica (Aviation Electronics for all Aircraft, Planes and Helicopters)
Line maintenance category B2 (avionics) is applicable to large and small aircraft and is not divided into subcategories.
B2L Category
B2L Avionics: Limited to the applicable system (radio systems, navigation systems, etc.).
Category B3
B3 Aircraft with non-pressurized piston engine of 2000 kg MTOM or less.
Examination format
Examination (online or paper), which must meet the following requirements:
- Each multi-choice question must have three alternative answers, of which only one will be correct, and the candidate must be given a time to complete each module based on an average of 75 seconds per question.
- The pass mark for each multi-answer question part of the module and sub-module examination is 75%.
- Penalty scores should not be used (negative points for failed questions)
- Each developmental question requires the writing of a written answer, and the candidate should be allowed 20 minutes for each question.
- The pass mark for each development question is 75%; the candidate's answer must contain at least 75% of the required key points and must not make any significant errors in respect of any key points.
- The development questions must be written and assessed following the knowledge syllabus of modules 7A, 7B, 9A, 9B and 10 of Appendix I.
- If one of the parts of the examination (the multi-choice questions or the essay questions) is failed, it is only necessary to retake the failed part of the examination.
- There will be no access to the texts during the examination.
EASA part 66 modules available
Categories B1, B2, B2L and B3: 32 multi-choice and 0 essay questions.
Time allowed: 40 minutes.
- Categories A and B3: 32 multi-choice and 0 essay questions. Time allowed: 40 minutes.
- Categories B1, B2 and B2L: 52 multi-choice and 0 essay questions. Time allowed: 65 minutes.
- Category B3: 24 multi-choice and 0 essay questions. Time allowed: 30 minutes.
- Categories B1, B2 and B2L: 52 multi-choice and 0 essay questions. Time allowed: 65 minutes.
- Categories B1 and B3: 20 multi-choice and 0 essay questions. Time allowed: 25 minutes.
- Categories B2 and B2L: 40 multi-choice and 0 essay questions. Time allowed: 50 minutes.
- Categories A and B3: 20 multi-choice and 0 essay questions. Time allowed: 25 minutes.
- Category B1: 40 multi-choice and 0 essay questions. Time allowed: 50 minutes.
- Categories B2 and B2L: 72 multi-choice and 0 essay questions. Time allowed: 90 minutes.
- Categories B1 and B3: 80 multi-choice and 0 essay questions. Time allowed: 100 minutes
- Categories B2 and B2L: 60 multi-choice and 0 essay questions. Time allowed: 75 minutes.
- Categories B1 and B3: 80 multi-choice and 2 essay questions. Time allowed: 100 minutes plus 40 minutes.
- Categories B2 and B2L: 60 multi-choice and 2 essay questions. Time allowed: 75 minutes plus 40 minutes..
Categories A, B3, B1, B2 and B2L: 24 multi-choice and 0 essay questions.
Time allowed: 30 minutes
Categories A, B1, B3, B2 and B2L: 28 multi-choice and 0 essay questions.
Time allowed: 35 minutes.
Categories B1, B3, B2 and B2L: 44 multi-choice and 0 essay questions.
Time allowed: 55 minutes.
- Category B1.1: 140 multi-choice and 0 essay questions. Time allowed:: 175 minutes.
- Category B1.2: 100 multi-choice and 0 essay questions. Time allowed:: 125 minutes.
- Category B3: 60 multi-choice and 0 essay questions. Time allowed:: 75 minutes.
Categories B1.3 and B1.4: 128 multi-choice and 0 essay questions.
Time allowed: 160 minutes.
- Category B2: 188 multi-choice and 0 essay questions. Time allowed: 235 minutes.
- Category B2L:
| System Enabling | Multi-choice questions | Time allowed | |
|---|---|---|---|
| Basic requirements (submodules 13.1, 13.2, 13.5 y 13.9) | 32 | 40 | |
| COM/NAV (submodules 13.4 a)) | 24 | 30 | |
| INSTRUMENTATION SYSTEMS (submodule 13.8) | 20 | 25 | |
| AUTOMATIC PILOT (submodules 13.3 y 13.7) | 28 | 35 | |
| SURVEILLANCE (submodule 13.4 b)) | 20 | 25 | |
| CELL SYSTEMS (submodules 13.11 a 13.19) | 52 | 65 |
Categories B2 and B2L: 32 multi-choice and 0 essay questions.
Time allowed: 40 minutes.
Note: The B2L exam for module 14 is only applicable to the "instrumentation systems" and "cell systems" ratings.Categories B1.1 and B1.3: 92 multi-choice and 0 essay questions.
Time allowed: 115 minutes.
Categories B3, B1.2 and B1.4: 76 multi-choice and 0 essay questions.
Time allowed: 95 minutes.
Categories B3, B1.1 and B1.2: 32 multi-choice and 0 essay questions.
Time allowed: 40 minutes
Course process
01Step 1
Register for the exam of the desired module02Step 2
Receive training material03Step 3
Initial reading in online class (SDL: synchronous distance learning)04Step 4
Personal study05Step 5
You will receive an email address and phone number for the instructor. You can contact him for questions and any possible explanations you may have.06Step 6
In-person exams at preselected location. Several options (6 days ON SITE, two modules each day; or 10 days in two batches, separated by 15 days; etc.)07Step 7
Certification: After a successful exam, you will be rewarded with a Certificate of Recognition for that specific module.
Benefits of attending NAS
Professional and experienced human team that can satisfy your individual needs.
Free choice between studying all license category modules or only individual module.
All materials, reviews and exams are in English, the official and mandatory language in the aeronautical field.
Option for an on-site review before the exam, so you're ready when it matters most.
During the self-study process, you can contact the instructor for all clarifications.
Coming soon
Agreements with:
- Maintenance Organizations Part 145 to completer
- Basic experience working with them
- Type Rating Training
- OJT realization
- Courses on Human Factors in the aeronautical field
- EWIS
Exam FAQ
- Age: The minimum age to apply for a Part 66 license is 18 years (date of entry of the application in the appropriate Register). The necessary knowledge and experience can be acquired beforehand).
- Basic knowledge
- Experience
There are 12 modules for Cat. B1.3. There are 13 multiple-choice exams (one for each module) and 2 short developmental exams for module M7).
You may attend just one or a few modules or the entire package. All certificates issued by Part 147 approved organizations are mutually recognized and accepted equally.
Your second attempt may not be made before 90 days after your first attempt.
The training courses and examinations shall be conducted within 10 years prior to the application for the aircraft maintenance license or the addition of a category or subcategory to such license.
- Commission Regulation (EU) No 1321/2014 of 26 November 2014 on the continuing airworthiness of aircraft and aeronautical products, parts and appliances and on the approval of organizations and personnel involved in these tasks.
- COMMISSION REGULATION (EU) No 1149/2011 of 21 October 2011 amending Regulation (EC) No 2042/2003 on the continuing airworthiness of aircraft and aeronautical products, parts and appliances, and on the approval of organizations and personnel involved in these tasks.
Request your training offer
Part 66 exams or exams + revision
Please fill in the following form. Subsequently, you will be asked for more details in order to prepare the most suitable offer for you.
You will be equipped with prices, dates and other details within 48 hours.
