EASA Part-66 Category B2 Modules
The exact knowledge modules a Category B2 licence requires — with live practice-question counts for each.
12
Modules to pass
12,928+
Practice questions
75%
Exam pass mark
Module applicability per Commission Implementing Regulation (EU) 2023/989, Appendix I § 2, as further amended by (EU) 2025/111 (Module 18 and subcategory B1.E, from 13 February 2026). See the full applicability matrix.
What Category B2 covers
Category B2 (avionics) permits release to service following maintenance on avionic and electrical systems, and on electrical and avionics tasks within powerplant and mechanical systems requiring only simple tests.
Category B2 required modules
12 modules · tap any module to start practising
The Category B2 exam
A Category B2 candidate must pass 12 of the 18 basic-knowledge modules.
Each module is examined by multiple-choice questions with a 75% pass mark (Module 7 also carries an essay). The number of questions and the time allowed vary by module and category.
See the full exam structure for the per-module question count and time, and the experience requirements for Category B2.
Frequently asked questions
How many modules do I need for a B2 licence?
Does B2 need Module 4?
Practice Category B2 exam questions
12,928+ practice questions across every module you need, each with a worked explanation.
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