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AACU = Acronyms & Abbreviations Commonly Used

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Well-known member
Jun 30, 2018
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Ontario Canada
Here is a list of terms used in the RC hobby.

AC = Aircraft

AGL = Above Ground Level

AMA = Academy of Model Aeronautics

AMSL = Above Mean Sea Level

ARTF = Almost ready to fly

ASL = Above Sea Level

ATTI = Attitude

AUW = All Up Weight

BNF = Bind n Fly (transmitter)

BTU = Blue Tooth Unit

BLOS = Beyond line of sight

BVLOS = Blocked Visual Line of Sight

Cal = Calibration

CA = Collision Avoidance

CAA = Civil Aviation Authority (UK Regulator)

CAAS = Civil Aviation Authority of Singapore (Singapore Regulator)

CL = Course Lock

CSC = Combination Stick Command

ESC = Electronic Speed Controller

FAA = Federal Aviation Administration (US Regulator)

FPV = first person view

FRZ = Flight Restricted Zone

FS = Failsafe

GHz = Giga-hertz

GLONASS = Global Navigation Satellite System (Russian Satellite Navigation System)

GPS = Global Positioning System

HL = Home Lock

IR = Internal Resistance

IOC = Intelligent Orientation Control

IMU = Inertial Measurement Unit

LHCP = Left Hand Circular Polorized

LiPo = Lithium-Polymer (battery)

LOS = Line of sight

MC = Main controller

NFZ = No Fly Zone

MHz = Mega-hertz

MSL = Mean Sea Level

Nicad = Nickle Cadmium

NOTAM = Notice to Airmen

OA = Obstacle Avoidance

OP = Original Poster

POI = Point of Interest

RC = Remote Control

RHCP = Right Hand Circular Polorized

RTF = Ready to fly

RTH = Return To Home

RTM = Read The Manual

Rx = Receiver

SFRA = Special Flight Rules Area

SOC = State Of Charge

SPS = Starlink Positioning System

SUA = Small Unmanned Aircraft (What the CAA call what we fly)

SUSA = Small Unmanned Surveillance Aircaft (What the CAA call what we fly)

sUAS = Small unmanned aircraft system (what the FAA calls what we fly)

TC = Transport Canada

Tx = Transmitter

UAV = Unmanned aerial vehicle

VLOS = Visual line of sight

VRS = Vortex Ring State

VTx = Video Transmitter

VRx = Video Receiver

VPS = Visual Positioning System
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