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Glossary of Avionics Terms & Acronyms
A
3D, 4D Three or four dimension
4096 Code The octal base, four-digit code used between framing
pulses of a reply to identify the aircraft or for general
use and emergency codes (XPD).
A300 Airbus Industrie Model 300 Aircraft
A310 Airbus Industrie Model 310 Aircraft
A319 Airbus Industrie Model 319 Aircraft
A320 Airbus Industrie Model 320 Aircraft
A330 Airbus Industrie Model 330 Aircraft
A340 Airbus Industrie Model 340 Aircraft
AAAE American Association of Airport Executives
AAC Aeronautical Administrative Communications
AAL (1) American Airlines
(2) Above Aerodome Level
AAMP Advanced Architecture Micro-Processor
AAS Advanced Automation System
AAT FAA Air Traffic Control Service
AATT Advanced Air Transportation Technology (NASA
Program)
A/B Autobrake
A-BPSK Aeronautical Binary Phase Shift Keying
ABRV Abbreviation
ABS Absolute
Absolute The altitude of the aircraft above the terrain.
Altitude Also known as AGL (above ground level).
AC (1) Advisory Circular
(2) Alternating Current
A/C Aircraft
ACAC Air-Cooled Air Cooler
ACARS Airborne Communications Addressing and Reporting
System
ACAS Airborne Collision Avoidance System
ACC Active Clearance Control
ACCC Area Control Computer Complex
Acclrm Accelerometer
ACE (1) The control character meaning technical
acknowledge
(2) Actuator Control Electronics
(3) Advanced Certification Equipment
ACI Airports Council International
ACI-NA Airports Council International-North America
ACIPS Airfoil and Cowl Ice Protection System
ACK The control character meaning technical acknowledg-
ment of an uplink,used in an ACARS system
ACM Air Cycle Machine
ACMF Airplane Condition Monitoring Function
ACMP Alternating Current Motor Pump
ACMS Aircraft Condition Monitoring System
ACNSS Advanced Communication/Navigation/Surveillance
System
ACP Audio Control Panel
ACR Avionics Computer Resource
ACS Active Control System
ACU (1) Apron Control Unit
(2) Autopilot Control Unit
(3) Antenna Control Unit
A/D Analog-To-Digital
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