EASA & UK CAA PART-66 · THE NUMBERS AND THEIR SOURCES

Part-66 B1.1 facts and figures

Every load-bearing number on the Part-66 B1.1 route, on one page, each with the regulation that sets it. The pass mark is 75% and every paper is multi-choice with 3 answers per question. EASA sets 716 questions and 2 essays across the thirteen papers; the UK CAA sets 692 and 4. A module pass counts for 10 years, measured backwards from the licence application. The rest sits below in five groups, one sentence per figure, with the page that explains each group linked beneath it.

Checked against the current regulations on 3 August 2026. Sources: Regulation (EU) No 1321/2014, consolidated (EUR-Lex) · UK assimilated Regulation 1321/2014 (legislation.gov.uk) · UK Part-66 licensing (UK CAA).

01 THE EXAM STANDARDAPPX II · 1.1 TO 1.13

The exam standard in seven figures

3Alternative answers on every Part-66 multi-choice question, one of them correct, under both authorities.APPX II · 1.2
75%The pass mark for the multi-choice part of every module and sub-module, in both regimes.APPX II · 1.7
75 sThe nominal average time per question, so each paper’s allowance is its question count times 1.25 minutes.APPX II · 1.2
20 minAdded for each essay question a paper carries, on top of its multi-choice time.APPX II · 1.3
75%The essay pass under both regimes: that share of the required key points, with no significant error on any of them.APPX II · 1.5 TO 1.8
90 daysThe wait before retaking a failed module. It falls to 30 days only after tailored retraining at a Part-147 approved organisation.APPX II · 1.11
3Attempts EASA allows per examination in any twelve months; the UK allows the same number consecutively, then a year between sets.APPX II · 1.13

Every rule above is explained, with its exceptions, on the exam format page.

02 THE B1.1 SETAPPX I + II · CATEGORY B1.1

The thirteen papers, added up

13Modules a B1.1 candidate passes under either authority; the subjects match even where the numbering does not.APPX I · POINT 2
716 / 692Multi-choice questions across the full B1.1 set, EASA first and UK CAA second.APPX II · SUMMED
2 / 4Essay questions in the set: EASA’s both sit in Module 7, while the UK’s are spread across Modules 7A, 9A, 10.APPX II · 1.4
935 / 945 minTotal sitting time including essay minutes. The UK asks fewer questions yet sits longer, because it kept 4 essays where EASA kept 2.APPX II · SUMMED
4Papers set differently between the two regimes: Modules 6, 8, 9, 10.APPX II · POINT 2
9Modules whose syllabus itself differs between the texts, the deeper split hiding behind the matching question counts.APPX I · BOTH TEXTS

The module index, with each paper’s own figures, is on the licence guide; every difference behind that last figure is on the comparison page.

03 THE CLOCKS66.A.20 TO 66.B.410

How long everything lasts

10 yearsHow long a module pass counts for, measured backwards from the licence application. EASA applies it to each module on its own; the UK wording is collective.66.A.25(c) · UK (d)
10 yearsThe window before the application inside which all required experience must fall.66.A.30(f)
1 yearThe recency rule: at least this much of the experience must be recent, on the category of aircraft the licence is sought for.66.A.30(d)
5 / 3 / 2Years of experience B1.1 takes: with no relevant technical training, with skilled worker training, or with an approved Part-147 basic course.66.A.30(a)(2)
5 yearsHow long the licence itself runs from its last issue or change; any change resets it.66.A.40(a)
10 yearsHow long a granted examination credit lasts, running forwards from the grant.66.B.410(b)
6 monthsCertifying work needed in the preceding two years to keep exercising the privileges. Failing it suspends certifying, not the licence.66.A.20(b)(2)

The clocks around applying are walked through on the experience page, and the module pass clock on the exam format page.

04 THE PUBLISHED FEESORS5 NO. 446 · TABLE 60

The two published UK fees, and one example rate

£455The UK CAA’s charge to grant or extend a Part-66 licence, per category or subcategory combination.TABLE 60 c)(i)
£60Each attempt at a written examination module the CAA itself conducts. A Part-147 school prices its own examinations commercially, and no regulator publishes those.TABLE 60 f)
€103Per module under the Irish Aviation Authority, one worked example of a Member State tariff. There is no single EASA rate: EASA’s fee regulation carries no fee for an individual licence.IAA SCHEDULE 4 · 2026/02

The UK figures come from the UK CAA Scheme of Charges (Personnel Licensing), ORS5 No. 446, effective 1 April 2026 and reissued each March, so check the current scheme before budgeting against them. Why nobody can quote a total for the whole route is answered on the licence guide.

05 THE DATESTHE MOVING PARTS

The dates that moved the rules

31 December 2020EU aviation safety law ceased to apply to the UK; the text kept that day is the one the UK CAA still examines against.IP COMPLETION DAY
12 June 2024Regulation (EU) 2023/989 applies: EASA abolished the module letter suffixes and removed the essays from Modules 9 and 10.REG (EU) 2023/989
13 February 2026Regulation (EU) 2025/111 applies: EASA replaced the modularisation matrix and introduced Module 18. The UK adopted neither amendment.REG (EU) 2025/111
31 December 2022The UK’s transfer route for EU licence holders closed; one narrow reactivation route survives it.UK CAA
1 January 2023The UK stopped recognising EASA licences for aircraft on its register, and no recognition runs the other way either.UK CAA
1 August 2012The ten-year validity window for examinations entered the rules, via Commission Regulation (EU) No 1149/2011.REG (EU) 1149/2011
3 August 2026When every figure on this page was last read from its primary source. The CAA has an open consultation on amending its text, so treat any undated Part-66 number with suspicion.RMT.0201

What those dates did to the two syllabuses is the comparison page’s subject.

06 QUESTIONS PEOPLE ASKFAQ

Part-66 numbers people look up

Q.01

Where does it say the Part-66 pass mark is 75%?

In Appendix II of Part-66, point 1.7, and the sentence is identical under EASA and the UK CAA: “The pass mark for each module and sub-module multi-choice part of the examination is 75 %.” The essay parts carry their own 75% rule at points 1.5 to 1.8, counted in required key points rather than marks. How the mark plays out on the day is the exam format page’s subject.

Q.02

Is it 75 or 90 seconds per question in Part-66?

75 seconds. Appendix II point 1.2 bases each paper’s time on “a nominal average of 75 seconds per question”, which is why every tabulated allowance is the question count times 1.25 minutes. A page quoting 90 seconds for a Part-66 basic module is not quoting the current text of either regime.

Q.03

Which regulation is Part-66?

Annex III of Regulation (EU) No 1321/2014, the continuing airworthiness regulation. EASA reads the consolidation of 22 February 2026; Great Britain reads its assimilated copy, kept as EU law stood on 31 December 2020 with the UK’s own exit modifications. The three primary texts this site checks against are linked under the date at the top of every guide page.

Q.04

Where does the 10 year rule for Part-66 exams come from?

From 66.A.25: basic knowledge examinations must have been passed within 10 years before the licence application. The window entered the rules through Commission Regulation (EU) No 1149/2011, applying from 1 August 2012. EASA states expressly that it applies to each module examination on its own; the UK text applies it collectively. The direction of the clock, backwards, is the part that catches people out, and the exam format page walks it through.

07 WHERE TO GO NEXTRELATED

Put your own numbers beside these.

The free plan opens all thirteen modules, with 25 new questions a day in each one. Every question has three options, the Part-66 format, and an explanation behind every answer. It’s a plan, not a trial, and it needs no card.

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