Glossary

The master list of acronyms AvRegs understands. Search knows them too — searching an acronym also matches its spelled-out term in the regulations. Click a term to search it.

AC	Advisory Circular
ACAS	Airborne Collision Avoidance System
AD	Airworthiness Directive
ADIZ	Air Defence Identification Zone
ADS-B	Automatic Dependent Surveillance - Broadcast
AFM	Aircraft Flight Manual
AGL	Above Ground Level
AIM	Aeronautical Information Manual
AIP	Aeronautical Information Publication
AME	Aircraft Maintenance Engineer
AMO	Approved Maintenance Organization
ANS	Air Navigation Services
AOC	Air Operator Certificate
APU	Auxiliary Power Unit
APV	Approach Procedure with Vertical Guidance
ASL	Above Sea Level
ATC	Air Traffic Control
ATF	Aerodrome Traffic Frequency
ATIS	Automatic Terminal Information Service
ATPL	Airline Transport Pilot Licence
ATS	Air Traffic Services
AWOS	Automated Weather Observation System
BVLOS	Beyond Visual Line-of-Sight
CAME	Civil Aviation Medical Examiner
CAR	Canadian Aviation Regulations
CARS	Canadian Aviation Regulations
CASA	Civil Aviation Safety Alert
CASS	Commercial Air Service Standards
CAST	Commercial Aviation Safety Team
CFIT	Controlled Flight Into Terrain
CFS	Canada Flight Supplement
CMNPS	Canadian Minimum Navigation Performance Specifications
COM	Company Operations Manual
CORSIA	Carbon Offsetting and Reduction Scheme for International Aviation
CPL	Commercial Pilot Licence
CRFI	Canadian Runway Friction Index
CRM	Crew Resource Management
CSA	Canadian Standards Association
CUSMA	Canada-United States-Mexico Agreement
CVFR	Controlled Visual Flight Rules
CVR	Cockpit Voice Recorder
DG	Dangerous Goods
DME	Distance Measuring Equipment
EFB	Electronic Flight Bag
ELT	Emergency Locator Transmitter
ESCAT	Emergency Security Control of Air Traffic
ETOPS	Extended-Range Twin-Engine Operations
FAF	Final Approach Fix
FATO	Final Approach and Take-Off Area
FDM	Flight Data Monitoring
FDR	Flight Data Recorder
FIC	Flight Information Centre
FIR	Flight Information Region
FMCS	Flight Management Computer System
FSS	Flight Service Station
FTU	Flight Training Unit
GNSS	Global Navigation Satellite System
GPS	Global Positioning System
GPWS	Ground Proximity Warning System
HUD	Head-Up Display
ICAO	International Civil Aviation Organization
IFR	Instrument Flight Rules
ILS	Instrument Landing System
IMC	Instrument Meteorological Conditions
KIAS	Knots Indicated Airspeed
LDA	Landing Distance Available
LNAV	Lateral Navigation
LTA	Lighter-Than-Air
MCM	Maintenance Control Manual
MCTOW	Maximum Certificated Take-Off Weight
MEL	Minimum Equipment List
METAR	Aerodrome Routine Meteorological Report
MF	Mandatory Frequency
MMEL	Master Minimum Equipment List
MOCA	Minimum Obstruction Clearance Altitude
MPM	Maintenance Policy Manual
MTOW	Maximum Take-Off Weight
NDB	Non-Directional Beacon
NORAD	North American Aerospace Defence Command
NOTAM	Notice to Airmen
OTT	Over-the-Top
PBN	Performance-Based Navigation
PED	Portable Electronic Device
PIC	Pilot-in-Command
POH	Pilot Operating Handbook
PPC	Pilot Proficiency Check
PPL	Private Pilot Licence
RESA	Runway End Safety Area
RNAV	Area Navigation
RNP	Required Navigation Performance
RNPC	Required Navigation Performance Capability
RPA	Remotely Piloted Aircraft
RPAS	Remotely Piloted Aircraft System
RVR	Runway Visual Range
RVSM	Reduced Vertical Separation Minimum
SAE	Society of Automotive Engineers
SAR	Search and Rescue
SCDA	Stabilized Constant Descent Angle
SCIG	Simulator Component Inoperative Guide
SIC	Second-in-Command
SMS	Safety Management System
SOP	Standard Operating Procedures
SOR	Statutory Orders and Regulations
STC	Supplemental Type Certificate
TAF	Aerodrome Forecast
TAWS	Terrain Awareness and Warning System
TC	Transport Canada
TCAS	Traffic Alert and Collision Avoidance System
TCCA	Transport Canada Civil Aviation
TDG	Transportation of Dangerous Goods
TLOF	Touchdown and Lift-Off Area
TODA	Take-Off Distance Available
TORA	Take-Off Run Available
TSB	Transportation Safety Board
TSO	Technical Standard Order
UHF	Ultra High Frequency
ULC	Underwriters Laboratories of Canada
UTC	Coordinated Universal Time
VFR	Visual Flight Rules
VHF	Very High Frequency
VLA	Very Light Aeroplane
VLOS	Visual Line-of-Sight
VMC	Visual Meteorological Conditions
VOR	VHF Omnidirectional Range