A Amber AOC Airline Operational Control A Alternate AP Autopilot A/C Aircraft AP/FD Autopilot/Flight Director A/D Analog/Digital APPR Approach A/DC Analog-to-Digital Converter APPU Asymmetry Position Pick Off Unit A/R Audio Reproducer APU Auxiliary Power Unit A/SKID Anti-Skid ARINC Aeronautical Radio Incorporated A/THR Autothrust ARPT Airport A/XFMR Autotransformer ASCII American Standard Code for Information Interchange ABCU Alternate Braking Control Unit ASI Airspeed Indicator AC Alternating Current ASIC Application Specific Integrated Circuits ACARS Aircraft Communication Addressing and Reporting System ASM Aircraft Schematics Manual ACC Active Clearance Control ASP Audio Selector Panel ACCEL Acceleration/Accelerate ASSY Assembly ACCLRM Accelerometer ATA Air Transport Association of America ACCU ACCUMULATOR ATC Air Traffic Control ACMM Abbreviated Component Maintenance Manual ATE Automatic Test Equipment ACMS Aircraft Condition Monitoring System ATLAS Abbreviated Test Language for All Systems ACP Area Call Panel ATS Autothrottle System ACP Audio Control Panel ATSU Air Traffic Service Unit ACQN Acquisition ATT Attitude ACSC Air Conditioning System Controller ATTND Attendant ACT Active AUTO Automatic ACTR Actuator AUX Auxiliary ADC Air Data Computer AVAIL Available ADF Automatic Direction Finder AVNCS Avionics ADIRS Air Data/Inertial Reference System AWM Aircraft Wiring Manual ADIRU Air Data/Inertial Reference Unit AWY Airway ADM Air Data Module AZ Azimuth ADR Air Data Reference B Blue ADS Air Data System BARO Barometric ADV Advisory BAT Battery AEVC Avionics Equipment Ventilation Computer BCD Binary Coded Decimal AF Audio Frequency BCL Battery Charge Limiter AFS Automatic Flight System BFO Beat Frequency Oscillator AGB Accessor...
