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Instrument Acronyms

If I’ve missed any, let me know. Some might be wrong, I hope not
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MaxwellLE
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Last updated: February 14, 2026
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First submittedFebruary 11, 2026
Times taken10
Average score43.8%
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AMLCD
Active Matrix Liquid Crystal Displays
ADIRU
Air Data Inertial Reference Unit
ASI
Air Speed Indicator
AFN
Air Traffic Facilities Notification
ACARS
Aircraft Communications Addressing and Reporting System
ADC
Aircraft Data Computer
ALU
Arithmetic Logic Unit
AHRS
Attitude and Heading Reference System
ADI
Attitude Director Indicator
AI
Attitude Indicator
APFDSCP
Auto Pilot Flight Director System Control Panel
ADS
Automatic Dependent Surveillance
AFCS
Automatic Flight Control System
APFDS
Autopilot Flight Director System
CRT
Cathode Ray Tube
CVR
Cockpit Voice Recorder
CVS
Combined VIsion System
CWS
Control Wheel Steering
CPDLC
Controller Pilot Data Link Communication
CI
Cost Index
DFDR
Digital Flight Data Recorder
DRC
Direct Reading Compass
DG
Directional Gyroscope
DME
Distance Measuring Equipment
ECAM
Electronic Central Aircraft Monitoring
EFIS
Electronic Flight Instrument System
EICAS
Engine Indication and Crew Alerting System
EGPWS
Enhanced Ground Proximity Warning System
EVS
Enhanced Vision System
FDR
Flight Data Recorder
FEP
Flight Envelope Protection
FMC
Flight Management Computer
FMS
Flight Management System
FMA
Flight Mode Annunciator
FLTA
Forward Looking Terrain Avoidance
FADEC
Full Authority Digital Engine Control
FANS
Future Air Navigation Systems
GNSS
Global Navigation Satellite Systems
GPWS
Ground Proximity Warning System
HUD
Heads Up Display
HSI
Horizontal Situation Indicator
INS
Inertial Navigation System
IRS
Inertial Reference System
IRU
Inertial Reference Unit
IVSI
Instantaneous Vertical Speed Indicator
ISIS
Integrated Standby Instrument System
LRU
Line Replaceable Unit
LVDT
Linear Variable Differential Transformer
MEMS
Micro Electrical Mechanical System
MCDU
Mode Control Display Unit
MCP
Mode Control Panel
MFP
Multi Function Probes
PFD
Primary Flight Display
RADALT
Radio Altimeter
RMI
Radio Magnetic Indicator
RRC
Remote Reading Compass
SWS
Stall Warning System
SAT
Static Air Temperature
SVS
Synthetic Vision System
TAT
Total Air Temperature
TWS
Touch Wheel Steering
TCAS
Traffic Collision Avoidance System
VSI
Vertical Speed Indicator
VOR
VHF Omnidirectional Range
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