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Part-66 Past Papers, Question Banks and PDFs: The Honest Guide

There are no official Part-66 past papers. EASA and the UK CAA do not publish exam papers, and Part-66 requires exam questions to be kept secure. What you can use instead are exam-style papers written to the current Appendix II format: three-option questions at the right paper size for your category and authority, with explanations, plus printable sheets for offline revision.

Updated 2026-10-19 · 9 min read · Checked against official sources

"Part-66 past papers" is one of the most searched phrases among people studying for their modules, and one of the most misunderstood. There are no official past papers, and most files sold or shared under that name are not what they claim to be. This guide explains why the papers don't exist, what the question bank PDFs you find online usually are, how to tell whether a bank is current for the 2024 rules, and how to use exam-style papers and printable sheets to prepare properly.

Part-66 Prep is an independent study aid. We are not EASA, the UK CAA or a Part-147 organisation, and our papers are original exam-style papers written for our app. For the full list of modules and paper sizes, start with the Part-66 modules guide.

Are there official Part-66 past papers?

No. Neither EASA nor the UK CAA publishes past Part-66 exam papers, and nor do the national authorities that issue EASA licences.

The reason is in the rule itself. The authority's procedures for basic knowledge examinations (66.B.200 in Regulation (EU) No 1321/2014, with the same point in the retained UK Part-66) require exam questions to be kept secure, and Part-147 organisations that run exams must do the same. A question bank that is published can't be secure, so the questions used in real exams stay with the examining organisation.

The CAA's own exam pages explain the format, booking and fees but did not publish sample or past questions when we checked in October 2026. The EASA Part-66 FAQs cover licensing and exams in detail and likewise point to the rules, not to question papers.

Key fact: A candidate proven to have cheated during a Part-66 exam is barred from all exams for 12 months, under both EASA and UK CAA rules. Exam security is taken seriously.

What "past papers" sold online usually are

If there are no official papers, what are the files and websites using the name? In our experience looking at them, they fall into a few groups:

What it is Typical signs Problem
Recalled questions Written from memory by candidates after an exam, often with "recalled" or "real exam" in the title Incomplete, often wrong, and using them may breach your exam centre's rules
Old national or JAR-era banks Four options, references to JAR-66 or national licences, syllabus topics that no longer exist Wrong format and outdated content
Pre-2024 Part-66 banks Module 9 and 10 essays for EASA, Module 8 at 20 questions for everyone Out of date for EASA candidates since 12 June 2024
Scanned textbooks and workbooks Watermarks, chapter numbers, publisher headers Usually shared without permission
Exam-style banks written to the syllabus Three options, syllabus references, explanations The useful kind, if they are kept current

The first four have something in common: you can't check where they came from, and they give no explanation when you get a question wrong. Copyright is a real issue too. Training organisations and publishers own their material, and a "free PDF" of a paid workbook is usually shared without permission.

There is also a practical problem with memorising questions that candidates remembered after an exam. Appendix II says wrong answers must look equally plausible to someone who doesn't know the subject, and calculation distractors must come from common procedural mistakes. A well-written exam therefore punishes recognition without understanding. If you have learned that "the answer to the torque question is 80", a paper with different numbers catches you out.

How to tell whether a question bank is current

Use this checklist on any bank, free or paid, including ours:

  1. Three options per question. Part-66 uses three options with one correct answer. Four-option questions mean the bank was not written to Appendix II.
  2. 2024 paper sizes for EASA. Since 12 June 2024 (Regulation (EU) 2023/989), EASA Module 8 is 24 questions, Module 9 is 28 with no essay, and Module 10 is 44 for B1, B2 and B3 with no essay.
  3. A separate UK option. UK exams kept the older standard: Module 8 is 20 questions, Module 9 is 20 plus an essay, Module 10 is 40 plus an essay for B1 and B2. A bank that gives one set of figures for both systems is wrong for one of them.
  4. Paper size by category. The same module has different sizes for A, B1, B2 and B3. Module 7 is 76, 80 or 60 questions under EASA rules depending on category.
  5. Syllabus references and explanations. Each question should tie to a sub-module so you can see where you are weak, and explain why the right option is right.
  6. Current syllabus topics. EASA Module 7 no longer includes welding or avionic test equipment, and Module 9 now includes the Dirty Dozen and safety management. Module 10 for EASA includes cybersecurity.
  7. A date. Look for when the bank was last checked against the rules.

The EASA vs UK CAA guide lists every paper where the two systems differ, and the Part-66 exam format guide explains the question rules in detail.

Our papers: exam-style, not past papers

We built our papers to be the substitute that past papers can't be. They are original questions written for the Part-66 Prep app, never recalled or copied from real exams.

  • Ten papers per module paper, the same ones as in the app, with questions spread over the sub-modules the way the AMC to Appendix II weights them.
  • The right size for you. Each paper is sized for your category, under EASA rules by default or UK CAA rules if you choose that on the start screen.
  • Real conditions. Three options, about 75 seconds a question, a 75% pass mark and no negative marking.
  • Explanations after every answer, with the sub-module reference.
  • Fresh numbers. Calculation questions get new numbers from our generator, so you practise the method.
  • A readiness count. Each module hub shows how many of three papers they have scored 85% or more on, which matches the booking rule we suggest below.

The bank holds 14,184 original questions (essays excluded) across Modules 1 to 17 and all seven categories we cover. Paper 1 of every module is free for every category, for example Module 7 paper 1 for B1.1. Papers 2 to 10, the 60-question mixed papers and sub-module drills come with Pro.

Exam tip: The sample questions under this article come from across the B1.1 modules, with answers. Use them to judge the style, then sit a full paper against the clock.

Part-66 question bank PDFs: the printable option

Plenty of people revise better on paper, on a train or in a break room without a screen. For that, every module has a free printable sheet: 50 original questions with the answer key on a separate page, which you can print or save as a PDF from your browser.

Module Printable sheet
Module 1 Mathematics Module 1 printable questions
Module 7 Maintenance practices Module 7 printable questions
Module 9 Human factors Module 9 printable questions
Module 10 Aviation legislation Module 10 printable questions

The same format exists for every module from 1 to 17. Each module page links its own sheet, along with a breakdown of the sub-modules; see the Module 7 and Module 10 pages for two examples. Printable sheets don't time you, so use them for learning and use the online papers for exam rehearsal.

A simple way to work with a printed sheet: cover the answer key, answer all 50 questions in pencil, then mark them and write the sub-module next to every wrong answer. Two or three wrong answers in the same sub-module tell you exactly which note to reread before your next timed paper. Keep the marked sheets; doing the same sheet again a month later, after other practice, is a fair check that the knowledge has stuck.

How to use practice papers well

Practice papers work when you use them to find gaps, not to memorise answers.

  1. Start with a diagnostic. The free 20-question diagnostic samples every module for your category: try the B1.1 diagnostic or the B2 diagnostic.
  2. Learn before you test. Read the notes for a sub-module, then do quick practice with explanations on.
  3. Sit full papers timed. Use the real size and time for your category and authority. Time pressure changes how you read questions.
  4. Review by sub-module. After each paper, sort your wrong answers by sub-module and go back to the notes for the weakest one. Don't just reread the correct option.
  5. Don't repeat the same paper too soon. A second attempt at the same paper a day later measures memory, not knowledge. Move to a new paper.
  6. Use the 85% rule. Book the exam once you score 85% or more on three different papers. The 10-point margin above the 75% pass mark covers nerves and unfamiliar wording.

If you are preparing without a Part-147 course, the Part-66 self-study guide covers planning modules around work.

Signs you are memorising, not learning

It is easy to mistake familiarity for knowledge. Watch for these warning signs in your own practice:

  • Your score on a paper you have seen before is much higher than on a new one.
  • You recognise the right option before you finish reading the question.
  • You can't explain, in a sentence, why each wrong option is wrong.
  • Calculation questions go well only when the numbers match ones you have seen.

If any of these sound familiar, slow down: read the explanation for every question, right or wrong, and switch to sub-module drills or a new paper for a while.

Legitimate free resources worth using

You don't need a dubious PDF to prepare well. These are all free and safe to use:

Resource What it is good for
The rule texts on EUR-Lex and legislation.gov.uk Appendix I (the syllabus and knowledge levels) and Appendix II (the exam standard and paper sizes). Essential for Module 10
The EASA Part-66 FAQs Answers on exams, credits, experience and licences in plain language
The UK CAA engineer licensing pages UK knowledge requirements, exam booking, fees and the licence application
CAP 715 A 2002 CAA introduction to maintenance human factors, now "reference only"; good background for Module 9
FAA Aviation Maintenance Technician Handbooks Free US textbooks for the general, airframe and powerplant content. Use them for the technology, never for the rules
Our free guides and notes The EASA and UK exam guides, the categories guide and the first note of every module

Part-147 students also get progress tests from their school, which are the closest thing to the real exam environment you will see before the day itself.

Questions to ask about any paid bank

Before you pay for any Part-66 question bank, ours included, ask:

  • Does it state which rules it follows, and when it was last checked?
  • Does it separate EASA and UK paper sizes?
  • Are the questions three-option, with explanations?
  • Does it cover your category, not just B1.1?
  • Can you cancel easily, and is the price clear in your currency?
  • Does it claim to contain questions taken from live exams? If so, walk away: no legitimate bank does.

No question bank can promise a pass, and we don't either. What a good one can do is show you where you stand against the real format before you spend £60 on a CAA exam attempt (CAA fee as of October 2026) or use one of your limited attempts.

Your study plan

  1. Take the free diagnostic for your category, such as the B1.1 diagnostic.
  2. Pick your next module from the modules guide and read its free first note.
  3. Do the free quick practice daily, then sit paper 1 against the clock.
  4. Print the module's sheet, for example the Module 9 printable questions, for revision away from a screen.
  5. Book once you score 85% on three different papers, and check the attempt rules for your system first.

30 free Part-66 B1.1 practice questions with answers

Try each one, then open the answer. For the timed experience use the free diagnostic.

  1. 1. A machine has a velocity ratio of 5 and an efficiency of 80 %. What is its mechanical advantage?

    1. A. 6.25
    2. B. 0.16
    3. C. 4
    Show answer

    C. 4

    MA = efficiency × VR = 0.8 × 5 = 4.

  2. 2. Critical fatigue areas on control cables are where the cable:

    1. A. passes over pulleys or through fairleads
    2. B. runs straight through open bays
    3. C. is painted for identification purposes
    Show answer

    A. passes over pulleys or through fairleads

    Areas where the cable bends or rubs (pulleys, sleeves, fairleads) and within about 1 ft of a swaged fitting are prone to wire breakage and are inspected closely.

  3. 3. Why does a feathering propeller on a light twin have start locks (high-pitch latches)?

    1. A. To prevent the blades going into reverse on the ground
    2. B. To lock the blades at maximum pitch during take-off
    3. C. To stop the blades feathering when the engine stops, easing restart
    Show answer

    C. To stop the blades feathering when the engine stops, easing restart

    Oil is lost at shutdown, so the spring/air charge would feather the blades. Spring-loaded latches engage below about 600-800 rpm, holding the blades in low pitch so the engine is not heavily loaded at the next start.

  4. 4. The average value of a sine wave taken over one half-cycle is

    1. A. 0.5 × peak value
    2. B. 0.637 × peak value
    3. C. 0.707 × peak value
    Show answer

    B. 0.637 × peak value

    The mean of a half-cycle of a sine wave is 2/π ≈ 0.637 of the peak. Over a full cycle the average is zero.

  5. 5. A 'basic T' layout refers to the arrangement of

    1. A. the four engine display pages on the EICAS
    2. B. the flight deck circuit breaker panels
    3. C. airspeed, attitude, altitude and heading instruments
    Show answer

    C. airspeed, attitude, altitude and heading instruments

    The basic T places attitude in the centre, airspeed on the left, altitude on the right and heading below; EFIS preserves this arrangement.

  6. 6. CG positions calculated by fuel management computers are usually expressed as:

    1. A. a percentage of the aircraft length
    2. B. a percentage of the mean aerodynamic chord (% MAC)
    3. C. a distance from the nose landing gear
    Show answer

    B. a percentage of the mean aerodynamic chord (% MAC)

    For transport aircraft the CG is given as % MAC. This relates it to the wing's aerodynamic centre, so limits can be compared easily. Station numbers in inches or metres may be used in loading calculations.

  7. 7. On a stress-strain graph for a metal, the straight initial portion shows that stress is:

    1. A. proportional to strain
    2. B. independent of strain
    3. C. inversely proportional to strain
    Show answer

    A. proportional to strain

    Within the elastic limit stress/strain is constant (Hooke's law); its gradient is Young's modulus.

  8. 8. Why are shake-proof tab lock washers used only once?

    1. A. They lose their spring action after heating
    2. B. They are cadmium plated and flake
    3. C. The tabs tend to break when bent a second time
    Show answer

    C. The tabs tend to break when bent a second time

    Shake-proof lock washers with tabs bent against the nut can withstand higher heat than other safetying and suit high vibration, but should be used only once because the tabs tend to break when rebent.

  9. 9. A red disc missing from the fuselage indicator shows that the fire bottle:

    1. A. discharged due to overheat
    2. B. was fired by the crew
    3. C. is fully charged
    Show answer

    A. discharged due to overheat

    The red (thermal) indicator is blown out when excessive heat causes the bottle's safety relief to vent overboard.

  10. 10. Which management action most directly supports a positive safety culture?

    1. A. Setting deadlines that cannot be met without taking shortcuts
    2. B. Visible commitment to safety and fair treatment of those who report errors
    3. C. Discouraging junior staff from asking questions of seniors
    Show answer

    B. Visible commitment to safety and fair treatment of those who report errors

    Managers set the tone: by resourcing work properly, treating reporters fairly and acting on reports, they encourage staff to follow procedures and report errors. Poor management example quickly becomes the norm.

  11. 11. Sweepback raises the critical Mach number because:

    1. A. It increases the thickness/chord ratio of the wing section
    2. B. It increases the aspect ratio of the wing for the same area
    3. C. It reduces the velocity component normal to the leading edge
    Show answer

    C. It reduces the velocity component normal to the leading edge

    With sweep angle Λ the effective Mach number normal to the leading edge is M × cos Λ. The aircraft can therefore fly faster before the flow over the wing reaches Mach 1.

  12. 12. Backups of maintenance data are kept to:

    1. A. allow staff to access data from home
    2. B. satisfy the record retention period alone
    3. C. allow recovery after loss, failure or attack
    Show answer

    C. allow recovery after loss, failure or attack

    Backups, kept separate and tested, let the organisation restore records after ransomware or hardware failure.

  13. 13. A silicon diode fails open-circuit. On an analogue ohmmeter it will read

    1. A. low resistance in both directions
    2. B. high resistance in both directions
    3. C. low one way and high the other
    Show answer

    B. high resistance in both directions

    An open junction blocks current in both directions.

  14. 14. An oxygen cylinder at 750 psig and 70 °F warms to 140 °F. What is its new gauge pressure (volume constant)?

    1. A. 1 500 psig
    2. B. 851 psig
    3. C. 865.7 psig
    Show answer

    B. 851 psig

    Absolute values: 764.7 psia × 600/530 °R = 865.7 psia; minus 14.7 = 851 psig.

  15. 15. When a spring is replaced in a component under a component maintenance manual, the spring must be:

    1. A. of the part number specified in the CMM or an approved alternative
    2. B. a spring of the same dimensions from another component
    3. C. a used spring that passes the free-length check
    Show answer

    A. of the part number specified in the CMM or an approved alternative

    Parts installed must conform to approved data and be traceable with the correct release documentation.

  16. 16. Before storing a feathering propeller that has been removed, which precaution helps prevent internal corrosion of the pitch-change mechanism?

    1. A. Leave the piston extended to expose the shaft
    2. B. Drain all grease from the bearings
    3. C. Keep the piston in the high-pitch position
    Show answer

    C. Keep the piston in the high-pitch position

    The FAA text notes that feathering propellers are normally placed in high pitch before shutdown to prevent exposure and corrosion of the pitch-changing mechanism. The same principle applies to storage.

  17. 17. Soft iron is used for the cores of electromagnets and relays because it

    1. A. does not conduct magnetic flux at all
    2. B. retains a strong permanent magnetism afterwards
    3. C. magnetises easily and loses it when current stops
    Show answer

    C. magnetises easily and loses it when current stops

    Soft iron has high permeability and low retentivity, so the magnet is strong while energised and releases when current is removed. Hard steel or alloys like Alnico are used for permanent magnets.

  18. 18. In a typical EFIS installation, which two displays are located directly in front of each pilot?

    1. A. Engine display and system display
    2. B. Standby attitude indicator and compass
    3. C. Primary flight display and navigation display
    Show answer

    C. Primary flight display and navigation display

    EFIS replaces the basic-T attitude and HSI with an electronic ADI (now the PFD) and an electronic HSI (now the ND) for each pilot. Engine and system pages are shown on the central ECAM/EICAS displays.

  19. 19. In an open-centre hydraulic system, when no selector valve is operated the fluid:

    1. A. circulates at low pressure back to the reservoir
    2. B. is stored in the accumulator only
    3. C. is held at full pressure by the pump
    Show answer

    A. circulates at low pressure back to the reservoir

    Open-centre selectors are in series. With no unit selected, fluid flows through the open centres of the valves back to the reservoir at low pressure. Pressure builds only when a selector is moved.

  20. 20. Five cylinder compression readings are 73, 79, 78, 72 and 75 psi. What is the mean reading?

    1. A. 94.2 psi
    2. B. 75.4 psi
    3. C. 60.4 psi
    Show answer

    B. 75.4 psi

    Mean = sum of readings ÷ number of readings = (73 + 79 + 78 + 72 + 75) ÷ 5 = 75.4 psi.

  21. 21. An internal wrenching bolt is removed from a steel fitting. It may be replaced with:

    1. A. another internal wrenching bolt of the same type
    2. B. a standard AN hex bolt of the same size
    3. C. any bolt of the same diameter and length
    Show answer

    A. another internal wrenching bolt of the same type

    Internal wrenching bolts are made from high-strength steel. Standard AN hex bolts and washers do not have the same strength, so only an internal wrenching bolt with its special nut and washer may be used.

  22. 22. An increase in turboprop fuel flow at constant propeller rpm results in:

    1. A. decreased torque and blade angle
    2. B. increased torque and blade angle
    3. C. increased rpm only
    Show answer

    B. increased torque and blade angle

    More fuel raises turbine inlet temperature and torque; the governor increases blade angle to absorb the power and hold rpm.

  23. 23. Working in very cold conditions can lead to:

    1. A. faster reactions due to alertness
    2. B. no effect if gloves are worn
    3. C. reduced dexterity and slower reactions
    Show answer

    C. reduced dexterity and slower reactions

    Cold makes hands numb, reduces grip and concentration; take breaks and use suitable clothing.

  24. 24. According to the ISA, how does the speed of sound change with altitude up to the tropopause?

    1. A. It decreases, because the temperature decreases
    2. B. It increases, because the density decreases
    3. C. It stays constant, because it depends only on pressure
    Show answer

    A. It decreases, because the temperature decreases

    The speed of sound a = √(γ·R·T) depends only on absolute temperature. In ISA it falls from about 340 m/s (661 kt) at sea level to about 295 m/s (573 kt) at the tropopause, then stays constant.

  25. 25. Under Article 2(4) of Regulation (EU) 2018/1139, when does a light aircraft type listed in Annex I points 1(e) to (i) come within the EU rules?

    1. A. When it is first flown in another Member State
    2. B. When more than ten are registered in one State
    3. C. When its designer applies for an EASA TC for serial production
    Show answer

    C. When its designer applies for an EASA TC for serial production

    Article 2(4) brings such a type into scope when the design organisation has applied to the Agency for a type-certificate (or made a declaration), the type is intended for serial production, and its design was not previously approved under national law.

  26. 26. The 'dead band' of a servo is:

    1. A. the maximum speed that the output can reach
    2. B. the input range over which the output does not respond
    3. C. the time the output takes to reach full travel
    Show answer

    B. the input range over which the output does not respond

    A small dead band prevents hunting due to noise, but too large a dead band reduces accuracy.

  27. 27. An ultrasonic pulse in air returns as an echo after 16 ms. How far away is the reflecting surface? (speed of sound 340 m/s)

    1. A. 5.44 m
    2. B. 2720 m
    3. C. 2.72 m
    Show answer

    C. 2.72 m

    The pulse travels out and back: d = v × t / 2 = 340 × 16/1000 / 2 = 2.72 m.

  28. 28. A rod-end bearing is checked for wear by:

    1. A. checking the colour of the bearing race
    2. B. weighing it and comparing with a new one
    3. C. measuring its play against the AMM limits
    Show answer

    C. measuring its play against the AMM limits

    Rod-end and spherical bearings are checked for play with a dial indicator or by the method in the AMM; play beyond the limit requires replacement because it causes free play in the linkage.

  29. 29. Composite propeller blades commonly have a leading-edge protection made of:

    1. A. nickel
    2. B. lead
    3. C. balsa wood
    Show answer

    A. nickel

    A typical composite blade has carbon-fibre spars, a foam core, a carbon/glass envelope, a polyurethane coat and a nickel leading-edge erosion shield; a lightning conductor is earthed to the metal root.

  30. 30. The speed of an induction motor is most directly controlled by changing

    1. A. the rotor bar material
    2. B. the supply frequency
    3. C. the direction of rotation
    Show answer

    B. the supply frequency

    Synchronous speed = 120f/P, so varying frequency (variable-frequency drives) or changing the number of poles changes speed.

Frequently asked questions

+Are there official Part-66 past papers?

No. Neither EASA, the national authorities of EU member states nor the UK CAA publishes past exam papers. Part-66 requires the organisations that run exams to keep their questions secure, so papers are not released after use.

+Does the UK CAA publish sample questions?

The CAA's engineer licensing and examination pages did not publish Part-66 sample or past questions when we checked in October 2026. They do explain the format, the booking process and the knowledge requirements, which is what you need to plan your revision.

+Are Part-66 question bank PDFs safe to use?

Treat them with caution. Many free PDFs are old, use four options instead of three, follow paper sizes from before June 2024 or come from unknown sources with no explanations. If a PDF claims to contain recalled exam questions, don't use it: it is unreliable and may breach exam rules and copyright.

+Why are some question banks four-option?

Usually because they were written for older national exams, copied from non-Part-66 sources or made without checking Appendix II. Part-66 exams use three options with one correct answer, so four-option practice trains you for a format you won't see.

+How do I know a question bank is up to date for 2024 rules?

Check the paper sizes. Under EASA rules since 12 June 2024, Module 8 is 24 questions and Module 9 is 28 questions with no essay; under UK rules Module 8 is 20 and Module 9 is 20 plus an essay. A bank that gives one figure for both systems, or still shows a Module 9 essay for EASA, is out of date.

+Can I print practice questions?

Yes. Every module has a free printable sheet of 50 original questions with an answer key on a separate page. Open it and use your browser's print option, or save it as a PDF.

+What happens if you are caught cheating in a Part-66 exam?

Under Part-66 a candidate proven to have cheated during an exam is barred from all exams for 12 months. Exam centres also ask candidates to keep questions confidential, and passing on or using compromised questions can lead to action against your exam results and future licence.

+How many practice questions should I do before a module exam?

There is no magic number. A better test is your score on full papers you haven't seen: book the exam when you reach 85% or more on three different papers at the real size and time.

Study offline on your phone too

The Part-66 Prep: EASA & UK CAA app has the same questions plus a module board, essay coach, units drill and an attempt tracker for resit dates.

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