Today’s aircraft increasingly rely on digital technology and complex electronic systems, not just for instrumentation, navigation, and communications, but today even for flight controls, system monitoring, maintenance planning, and more and more. Fiber optics and fly-by-wire is no longer the exception, but the rule. It is no longer limited to military, but now the basis of private and commercial aircraft both large and small. This module presents the B1 or A&P mechanical technician with what he or she needs to know for both a general understanding of these systems and the ability to work around them in an efficient and safe manner.
An advanced version of this book, Module 5/B2 is also available from Aircraft Technical Book Company (available April 2015) which covers these topics to the greater depth required for the B2 or SpaceTEC/CertTec rated avionics and electronics specialist.
TABLE OF CONTENTS
5.1 Electronic Instrument Systems
Typical systems arrangement and cockpit layout of electronic instrument systems.
5.2 Numbering Systems
Binary, octal, and hexadecimal numbering systems and conversions.
5.3 Data Conversion
Analogue and digital data; Operation and application of analogue/digital converters, inputs and outputs and various limitations.
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 as used in aircraft systems; schematic diagrams.
5.6 Basic Computer Science
Computer terminology and various memory devices such as RAM, ROM, PROM; Computer technology as used in aircraft systems.
Chapters 5.7 (microprocessors), 5.8 (integrated circuits), and 5.9 (multiplexing) are reserved for the advanced B2 version of this book for avionics technicians.
5.10 Fibre Optics
Advantages and disadvantages; Fiber optic data bus; terminations; couplers, control terminals, remote terminals; application in aircraft systems.
5.11 Electronic Displays
Operation of common types used in modern aircraft including cathode ray tubes (CRT), light emitting diodes (LED), and liquid crystal displays (LCD).
5.12 Electrostatic Sensitive Devices
Handling of sensitive components; Awareness of risks and personnel anti-static protection devices
5.13 Software Management Control
restrictions, airworthiness requirements and effects of unapproved changes to software programs.
5.14 Electromagnetic Environment
EMC Electromagnetic compatibility; EMI Electromagnetic Interference; HIRF High Intensity Radiated Field; Lightning protection
5.15 Electronic Digital Aircraft Systems
Arrangement of systems and associated BITE (built in test equipment)including:
ACARS-ARINC Communication, addressing and reporting systems
EICAS Engine indication and crew alerting system
FBW Fly by wire
FMS Flight management systems
IRS Inertial reference system
ECAM electronic centralized aircraft monitoring
EFIS Electronic flight instrument system
GPS Global positioning system
TCAS Traffic alert collision avoidance system
Integrated modular avionics
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