EASA 66 Module 5 - Digital Techniques/Electronic Instruments

EASA 66 Module 5 provides an extensive coverage of digital electronics starting from the basic concepts.Information relating to ESD and EMC is also presented. The last section of this modules relates the topics in digital electronics with the typical digital systems of aircraft.

  • 5.1 Electronic Instrument Systems
    • Typical systems arrangements and cockpit layout of electronic instrument systems
  • 5.2 Numbering Systems
    • Numbering systems: binary, octal and hexadecimal;Demonstration of conversions between the decimal and binary, octal and hexadecimal systems and vice versa
  • 5.3 Data Conversion
    • Analogue Data, Digital Data;Operation and application of analogue to digital, and digital to analogue converters, inputs and outputs,limitations of various types
  • 5.4 Data Buses
    • Operation of data buses in aircraft systems, including knowledge of ARINC and other specifications
  • 5.5 Logic Circuits
    • Identification of common logic gate symbols, tables and equivalent circuits;Applications used for aircraft systems, schematic diagrams Interpretation of logic diagrams
  • 5.6 Basic Computer Terminology
    • Computer terminology (including bit, byte, software,hardware, CPU, IC, and various memory devices such as RAM, ROM, PROM);Computer technology (as applied in aircraft systems) Computer related terminology;Operation, layout and interface of the major components in a micro computer including their associated bus systems;Information contained in single and multi-address instruction words;Memory associated terms;Operation of typical memory devices;Operation, advantages and disadvantages of the various data storage systems
  • 5.7 Microprocessors
    • Functions performed and overall operation of a microprocessor;Basic operation of each of the following microprocessor elements: control and processing unit,clock, register, arithmetic logic unit
  • 5.8 Integrated Circuits
    • Operation and use of encoders and decoders;Function of encoder types;Uses of medium, large and very large scale integration
  • 5.9 Multiplexing
    • Operation, application and identification in logic diagrams of multiplexers and demultiplexers
  • 5.10 Fiber Optics
    • Advantages and disadvantages of fiber optic data transmission over electrical wire propagation;Fiber optic data bus;Fiber optic related terms;Terminations;Couplers, control terminals, remote terminals;Application of fiber optics in aircraft systems
  • 5.11 Electronic Displays
    • Principles of operation of common types of displays used in modem aircraft, including Cathode Ray Tubes, Light Emitting Diodes and Liquid Crystal Display
  • 5.12 Electrostatic Sensitive Devices
    • Special handling of components sensitive to electrostatic discharges;Awareness of risks and possible damage, component and personnel anti-static protection devices
  • 5.13 Software Management Control
    • Awareness of restrictions, airworthiness requirements and possible catastrophic effects of unapproved changes to software programs
  • 5.14 Electromagnetic Environment
    • Influence of the following phenomena on maintenance practices for electronic system: EMC - Electromagnetic Compatibility, EMI - Electromagnetic Interference, HIRF - High Intensity Radiated Field Lightning, lightning protection
  • 5.15 Typical Electronic / Digital Aircraft Systems
    • General arrangement of typical electronic/digital aircraft systems and associated BITE (Built-in test Equipment) testing such as: ACARS -ARINC Communication and Addressing and Reporting System, ECAM - Electronic Centralized Aircraft Monitoring, EFIS - Electronic Flight Instrument System, EICAS - Engine Indication and Crew Alerting System, FBW - Fly by Wire, FMS - Flight Management System, GPS - Global Positioning System,IRS - Inertial Reference System, TCAS - Traffic Alert Collision Avoidance System
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