100+ Free Part-66 Module 10 Practice Questions

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2026 Statistics

Key Facts: Part-66 Module 10 Exam

44 questions / 55 min

Module 10 B1/B2/B3 Exam

EASA Part-66 (Reg 2023/989)

75%

Pass Mark per Module

EASA Part-66

12 June 2024

New Syllabus Applicable

Reg (EU) 2023/989

3 attempts / 90 days

Consecutive Attempts then Wait

EASA Part-66

Essay removed

Module 10 Change in 2024

Reg (EU) 2023/989

Part-IS added

Cybersecurity Content

Reg (EU) 2023/203

12 June 2026

Old-Standard Course Deadline

EASA Part-66 transition

EASA Part-66 Module 10 (Aviation Legislation) is taken by aircraft maintenance engineers working toward an EASA category B1, B2 or B3 licence. The B1/B2/B3 exam is 44 three-option multiple-choice questions in 55 minutes, passed at 75%; the essay was removed in June 2024. Content covers the regulatory framework (ICAO, EASA Basic Regulation (EU) 2018/1139, NAAs, Reg 1321/2014 and 748/2012), Part-66 certifying-staff categories, privileges and experience, Part-145 organisations (Accountable Manager, CRS, EASA Form 1, SMS), Part-M/Part-ML and Part-CAMO/Part-CAO continuing airworthiness (AMP, ARC, pilot-owner, independent certifying staff), and Part-21 certification (type certificate, STC, ADs, CS-23/25/27/29). The most-rewritten module under Regulation (EU) 2023/989 (applicable 12 June 2024) adds oversight principles, non-EU regulation awareness (FAA/FAR-145, EMAR) and new Part-IS cybersecurity (Reg 2023/203). Pre-2024 courses must finish under the old standard by 12 June 2026; up to three consecutive attempts are allowed with a 90-day wait.

Sample Part-66 Module 10 Practice Questions

Try these sample questions to test your Part-66 Module 10 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which regulation is the EASA Basic Regulation that establishes the legal foundation for civil aviation safety in the European Union?

A.Regulation (EU) No 1321/2014

B.Regulation (EU) No 748/2012

C.Regulation (EU) 2018/1139

D.Regulation (EU) No 965/2012

Explanation: Regulation (EU) 2018/1139 is the EASA Basic Regulation; it sets the common rules in the field of civil aviation and establishes the European Union Aviation Safety Agency, repealing the former Regulation (EC) No 216/2008.

2What is the primary role of the International Civil Aviation Organisation (ICAO) in the global aviation regulatory framework?

A.It directly licenses individual aircraft maintenance engineers worldwide

B.It sets Standards and Recommended Practices (SARPs) for contracting states through the Chicago Convention

C.It issues type certificates for all large transport aircraft

D.It conducts ramp inspections of foreign operators within the EU

Explanation: ICAO, established by the 1944 Chicago Convention, develops Standards and Recommended Practices (SARPs) published as Annexes; contracting states then implement these into national law.

3Under the EU regulatory structure, which regulation contains Part-M, Part-145, Part-66 and Part-147?

A.Regulation (EU) No 748/2012

B.Regulation (EU) No 376/2014

C.Regulation (EU) 2018/1139

D.Regulation (EU) No 1321/2014

Explanation: Regulation (EU) No 1321/2014 on the continuing airworthiness of aircraft contains the annexes Part-M, Part-ML, Part-CAMO, Part-CAO, Part-145, Part-66 and Part-147.

4Which Part contains the requirements for the initial airworthiness, including type certification and design and production organisation approvals?

A.Part-145

B.Part-21

C.Part-M

D.Part-66

Explanation: Part-21 (Annex I to Regulation (EU) No 748/2012) governs initial airworthiness: type certification, supplemental type certificates, design organisation approvals (DOA), production organisation approvals (POA) and certificates of airworthiness.

5What is the principal role of a National Aviation Authority (NAA) of an EU Member State within the EASA system?

A.To draft EU aviation regulations independently of the European Commission

B.To act as the competent authority overseeing and certifying organisations and personnel within its territory

C.To replace EASA in certifying large aeroplane types

D.To set ICAO Standards and Recommended Practices

Explanation: The NAA is the competent authority that implements the EU regulations nationally: it oversees and issues approvals to Part-145, Part-CAMO and Part-147 organisations and Part-66 licences within its Member State.

6Which EASA Part-66 licence category covers avionic systems (instruments, autoflight, communications, navigation and electrical systems)?

A.Category A

B.Category B1

C.Category B2

D.Category B3

Explanation: Category B2 covers avionic systems and electrical systems, permitting certification of work on instrument, autoflight, communication/navigation and electrical systems plus certain electrical/avionic tasks in other systems.

7An EASA Part-66 Category B3 licence applies to which type of aircraft?

A.Turbine-engine helicopters

B.Piston-engine non-pressurised aeroplanes of 2 000 kg MTOM and below

C.Large pressurised transport aeroplanes

D.All avionic systems on any aircraft type

Explanation: Category B3 is restricted to piston-engine non-pressurised aeroplanes with a maximum take-off mass of 2 000 kg and below.

8What is the minimum basic experience requirement for a Category B1.1 licence applicant who has no previous relevant technical training?

A.2 years

B.3 years

C.5 years

D.10 years

Explanation: Under Part-66 (66.A.30), an applicant with no previous relevant technical training requires 5 years of practical maintenance experience for category B1.1 (and B1.3); this reduces to 3 years with a recognised technical trade and 2 years following a Part-147 approved basic course.

9Within which period before the application for an aircraft basic licence must the basic experience for a Part-66 licence have been acquired?

A.The preceding 3 years

B.The preceding 5 years

C.There is no time limit

D.The preceding 10 years

Explanation: Part-66 requires that the basic examinations be passed and the experience be acquired within the 10 years preceding the application for an aircraft maintenance licence.

10To retain the privileges of a Part-66 aircraft maintenance licence, the holder must have exercised certification privileges within a defined period or undergone an assessment. What is that period?

A.Within the preceding 6 months

B.Within the preceding 5 years

C.Within the preceding 2 years

D.Within the preceding 10 years

Explanation: Under 66.A.20(b), to exercise certification privileges the licence holder must have, in the preceding 2-year period, either 6 months of relevant maintenance experience or have met the provision for the issue of the appropriate privileges.

About the Part-66 Module 10 Exam

EASA Part-66 Module 10, Aviation Legislation, is one of the knowledge modules required for the EASA aircraft maintenance licence (categories B1, B2 and B3). It tests the regulatory framework governing European aircraft maintenance - ICAO and the EASA Basic Regulation, Part-66 certifying-staff licensing, Part-145 maintenance organisations, Part-M/Part-ML continuing airworthiness, and Part-21 certification. The module was heavily rewritten by Commission Implementing Regulation (EU) 2023/989 (applicable 12 June 2024), which removed the essay and added independent certifying staff, oversight principles, non-EU regulation awareness and, for the first time, Part-IS cybersecurity. The B1/B2/B3 exam is 44 multiple-choice questions in 55 minutes with a 75% pass mark.

Questions

44 scored questions

Time Limit

55 minutes

Passing Score

75%

Exam Fee

Approximately EUR 50-230 per module sitting (varies by NAA/Part-147 organisation) (EASA - examined at National Aviation Authorities or approved Part-147 maintenance training organisations)

Part-66 Module 10 Exam Content Outline

18%

Regulatory Framework

ICAO and the Chicago Convention, the EASA Basic Regulation (EU) 2018/1139, the European Commission and EASA roles, National Aviation Authorities, the structure of Reg (EU) 1321/2014 and 748/2012, occurrence reporting (Reg 376/2014), FAA/FAR-145 bilateral awareness and Annex I aircraft

20%

Certifying Staff (Part-66)

Licence categories A, B1, B2, B3, C and L; privileges and limitations; experience requirements (66.A.30); recency (66.A.20); type ratings and type training; examination format, 75% pass mark, three consecutive attempts and 90-day wait; EASA Form 19 and 5-year licence renewal

20%

Maintenance Organisations (Part-145)

Approval scope and the MOE, Accountable Manager (145.A.30), certifying versus support staff and Category C, the Certificate of Release to Service, EASA Form 1, capability list, records retention (145.A.55), subcontracting, human factors, internal safety reporting (145.A.202) and the SMS under Reg 2021/1963

18%

Continuing Airworthiness (Part-M / Part-ML / Part-CAMO / Part-CAO)

Part-M versus Part-ML scope, Aircraft Maintenance Programme, Airworthiness Review Certificate, Part-CAMO and Part-CAO, pilot-owner and independent certifying staff, compliance monitoring and oversight principles, CDCCL fuel-tank safety and EWIS

16%

Aircraft Certification (Part-21)

Type certificates and TCDS, Supplemental Type Certificates, Design and Production Organisation Approvals, certification specifications CS-23/25/27/29, Certificate of Airworthiness, Permit to Fly, Certificate of Registration, Noise Certificate, Airworthiness Directives, AMOC and Service Bulletins

Air Operations & Cybersecurity (Part-IS)

Reg (EU) 965/2012, Air Operator Certificate, MEL and MMEL rectification intervals, CDL, ETOPS and CAT II/III approvals; and the new Part-IS information security framework (Reg 2023/203), ISMS, aeronautical data integrity and connected-tool cybersecurity

How to Pass the Part-66 Module 10 Exam

What You Need to Know

Passing score: 75%
Exam length: 44 questions
Time limit: 55 minutes
Exam fee: Approximately EUR 50-230 per module sitting (varies by NAA/Part-147 organisation)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Part-66 Module 10 Study Tips from Top Performers

1Learn the regulation map cold: Reg (EU) 2018/1139 is the Basic Regulation, 1321/2014 holds Part-66/145/M/ML/CAMO/CAO, 748/2012 holds Part-21, and 965/2012 is air operations

2Memorise the Part-66 licence categories: A (minor scheduled line tasks), B1 (mechanical/structural), B2 (avionic/electrical), B3 (piston non-pressurised aeroplanes 2 000 kg and below), and C (base maintenance release)

3Know the certifying-staff documents: CRS releases maintenance, EASA Form 1 releases components, the ARC attests continuing airworthiness, and EASA Form 19 applies for the licence

4Drill the new 2024 topics hard - independent certifying staff and pilot-owner under Part-ML, oversight/compliance monitoring, FAA FAR-145 and EMAR awareness, and Part-IS cybersecurity (Reg 2023/203)

5Fix the key numbers: 75% pass mark, 44 questions in 55 minutes, three consecutive attempts then a 90-day wait, 5 years for B1.1 basic experience, and 3-year Part-145 record retention (145.A.55)

6Distinguish mandatory from advisory: an Airworthiness Directive is mandatory, a Service Bulletin is advisory unless mandated by an AD, and an AMOC is an approved alternative to an AD

Frequently Asked Questions

What is EASA Part-66 Module 10?

Module 10, Aviation Legislation, is one of the knowledge modules for the EASA aircraft maintenance licence. It tests the regulatory framework for European aircraft maintenance: ICAO, the EASA Basic Regulation, Part-66, Part-145, Part-M/Part-ML continuing airworthiness, and Part-21 certification.

How many questions are on Module 10 and what is the pass mark?

For categories B1, B2 and B3, Module 10 is 44 multiple-choice questions to be answered in 55 minutes, with a pass mark of 75%. The official exam uses three-option questions; the former essay was removed in June 2024.

What changed in Module 10 in 2024?

Commission Implementing Regulation (EU) 2023/989 (applicable 12 June 2024) made Module 10 the most-rewritten module. It removed the essay and added independent certifying staff, oversight principles, awareness of non-EU regulations (FAA/FAR-145, EMAR) and, for the first time, Part-IS aviation cybersecurity.

What is the difference between Part-M and Part-ML?

Part-M covers continuing airworthiness management for complex motor-powered aircraft and aircraft used in commercial air transport. Part-ML applies to lighter, other-than-complex aircraft (within defined mass limits) not operated by a licensed air carrier, with simpler rules including pilot-owner and independent certifying staff provisions.

Is Part-IS cybersecurity really tested on Module 10?

Yes. Since the 2024 syllabus, Module 10 includes a cybersecurity sub-section referencing the Part-IS information security framework (Regulation (EU) 2023/203), covering information security management systems, aeronautical data integrity and risks from connected maintenance tools.

How many attempts do I get at Module 10?

A candidate may make up to three consecutive attempts at a module; after that a 90-day waiting period applies (one year for failures within an approved training course). Module credit toward the licence is valid for 10 years.

Should I study UK CAA or EASA rules for this exam?

For the EASA examination use current EASA regulations. Since Brexit the UK CAA operates a separate, diverging system, so UK CAA-specific references should not be applied to the EASA Module 10 exam.

100+ Free Part-66 Module 10 Practice Questions

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