−D−> Direct
A/C Air Conditioning
A/C Air Conditioning
A/D Analog to Digital
A/D Analog/Digital
A/I Anti Ice
A/I Anti-Ice
A/T Auto throttle
A/T Autothrottle
AC alternating current
ACARS Airborne Communication Addressing and Reporting System. A digital data link system for transmission of short messages between aircraft and ground stations via radio or satellite
ACARS Aircraft Communication Addressing and Reporting System
ACAS Airborne Collision Avoidance System
ACCUM Accumulator
ACM Aircraft Condition Monitoring
ACMID ARINC Controlled Multi-Interface Device
ACP Audio Control Panel
ACS Air Conditioning System
ACT Active
ACT Aircraft Configuration Table
ADC Air Data Computer
ADF Automatic Direction Finder
ADI Attitude Direction Indicator
ADI Attitude Display Indicator
ADL Airborne Data Loader
ADM Automatic Descent Mode
ADS Air Data System
ADS-B Automatic Dependent Surveillance - Broadcast
ADS-C Automatic Dependent Surveillance - Contract
ADS-C Automatic Dependent Surveillance -Contract
ADV Advance
AFCS Automatic Flight Control System
AFD Adaptive Flight Display
AFDX Avionics Full Duplex Switched Ethernet
AFM (Aircraft Flight Manual) The most commonly used term describing an officially-approved pilot handbook for a specific aircraft make/model. Other associated manuals include the Crew Manual,
AFM Airplane Flight Manual
AFN ATS Facilities Notification
AFSK Audio Frequency-Shift Keying
AFU Artificial Feel Unit
AGB accessory gearbox
AGC Automatic Gain Control
AGL Above Ground Level
AGL height above ground level