EASA Part 66 · Module 5
Module 5: Digital Techniques & Electronic Instrument SystemsEASA Part 66 practice questions & answers
Module 5: Digital Techniques & Electronic Instrument Systems
Exam simulation recreates the real EASA test — full question count, countdown timer and 75% pass mark (subscribers).
About this module
EASA Part 66 Module 5 is the digital backbone of the licence: number systems and conversions (binary, octal, hex, BCD), logic gates and flip-flops, computer architecture, ARINC 429/629 data buses, fibre optics, EFIS/ECAM/EICAS displays, ESD precautions and software-control rules. For B2 candidates it is examined in depth; B1 candidates meet a lighter version of the same syllabus.
Questions tend to be very learnable: convert 11010111 to decimal, name the gate from a truth table, state the ARINC 429 word length, or recall which display shows a resolution advisory. Repetition against a large bank is the proven approach, and each of our questions explains the conversion or the rule so the pattern sticks.
What this module covers
Digital and computer-based systems and the electronic instruments they drive — logic circuits, data buses, microprocessors, displays and fibre optics. Core knowledge for the modern glass-cockpit aircraft an avionics engineer works on. Topics below follow the official EASA Part 66 syllabus.
- 5.1Electronic instrument systems
- 5.2Numbering systems
- 5.3Data conversion
- 5.4Data buses
- 5.5Logic circuits
- 5.6Basic computer structure
- 5.7Microprocessors
- 5.8Integrated circuits
- 5.9Multiplexing
- 5.10Fibre optics
- 5.11Electronic displays
- 5.12Electrostatic sensitive devices
- 5.13Software management control
- 5.14Electromagnetic environment
- 5.15Typical electronic and digital aircraft systems
How the exam works
Every Part 66 module is examined by multiple-choice questions with a 75% pass mark and no negative marking. More about EASA Part 66 →