CAAB AME B2 Exam
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ExploreAbout this exam
The CAAB Aircraft Maintenance Engineer Licence - B2 (Avionics) is the Bangladesh Civil Aviation Authority's basic-knowledge qualification for engineers who intend to certify avionics and electrical/electronic systems work on civil aircraft. It is aimed at trainee and practising avionics maintenance personnel who need to demonstrate a broad, theory-level understanding before moving on to type-specific training and certifying privileges. The knowledge examination is built around foundational subjects rather than any single aircraft type: mathematics and physics, electrical fundamentals, electronic fundamentals, digital techniques and electronic instrument systems, materials and hardware, maintenance practices, basic aerodynamics, human factors and aviation legislation. Because the syllabus is broad, preparation works best as a staged programme: secure the mathematics and physics base first, then build electrical and electronic fundamentals, layer digital techniques and instrument systems on top, and finish with the practical, procedural and regulatory subjects that candidates most often underestimate. This page provides independent practice material written to the published subject areas; it is not affiliated with, endorsed by, or produced by CAAB. CAAB's own website does not publish examination logistics such as question count, duration, pass mark, fee, licence validity or retake rules, so candidates should confirm those details from the official examination circular, the notice board and the e-Exam AME section of the regulator's site before booking.
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About CAAB AME B2 Exam preparation
What is the B2 licence actually for?
B2 is the avionics category of the aircraft maintenance engineer licence. It covers certification of electrical and electronic systems - communication, navigation, instrumentation, autoflight and related digital equipment - rather than airframe and engine mechanical work, which belong to the B1 categories. The basic knowledge examination tests the underlying theory before type training.
What is the format of the examination?
The practice material on this platform is multiple-choice, matching the usual knowledge-test style. CAAB's published homepage material does not state the official paper format, so treat the format described in the official examination circular as authoritative and confirm before you sit the paper.
How many questions, how long, and what is the pass mark?
These figures are not published on the CAAB page reviewed here, so no reliable number can be quoted. Do not rely on second-hand figures from forums or coaching notes. Check the current examination circular and the notice board on caab.gov.bd for the sitting you intend to take, and plan your timing practice around what the circular states.
Can I retake a failed module, and how many attempts do I get?
Retake rules are set by the authority and are not stated on the CAAB page reviewed here, so no attempt limit or waiting period can be given. Confirm the current position with CAAB directly or through the examination circular before assuming a resit is automatic. Treat any retake policy you read elsewhere as unverified.
What does the examination cost?
Fees are not shown on the CAAB homepage, and they change with regulation. No fee figure is given here because an unverified number is worse than none. Obtain the fee, payment method and deadline from the official circular or the CAAB fees and charges pages, and keep the payment receipt.
In what order should I study the subjects?
Build in dependency order: mathematics and physics first, because everything else uses them; then electrical fundamentals, then electronic fundamentals, then digital techniques and instrument systems. Study materials and hardware alongside maintenance practices, and leave basic aerodynamics, human factors and aviation legislation for later - they are short but easy to defer until too late.
Which subject do candidates most often fail?
Two patterns dominate. First, weak mathematics and physics undermining later electrical and digital questions. Second, treating human factors and aviation legislation as filler and skimming them, then losing easy marks. A third is memorising circuit descriptions without being able to reason about what the circuit does when one element changes.
How do I practise effectively?
Work in short, timed blocks and write down why each wrong answer was wrong, not just which option was right. Revisit the underlying topic immediately after an error. Spread practice across all subject areas rather than perfecting one, since a knowledge examination rewards broad coverage far more than depth in a favourite subject.
Where do I find the syllabus and exam schedule?
CAAB's site carries sections for syllabus and pamphlets, an e-Exam AME area, an Exam Schedule (PEL) listing, and circulars and forms for paper-based examinations. Check the notice board as well, since scheduling and regulatory notices are posted there. Use only the version currently live on caab.gov.bd.
Are there recent regulatory changes I should know about?
The CAAB notice board shows a notice dated 27-10-2026 on new General Civil Aviation Regulations 2026, and a notice dated 14-10-2026 inviting stakeholder comments on a draft amendment of ANO 10, Volumes 1 to 5. The ANO amendment is a draft, not in force, and neither notice states an examination-related requirement.