Abbreviations

This is a list of abbreviations that may be pronounced normally, without the use of the  phonetic alphabet

A
ATIS	Automated Terminal Information Service
ACAS	Airborne Collision Avoidance System
ACC	Area Control Centre
AIP	Aeronautical Information Publication
ALERFA	Alert Phase
APU	Auxiliary Power Unit
ASAP	As Soon As Possible
ATC	Air Traffic Control
ATZ	Aerodrome Traffic Zone
AWACS	Airborne Warning And Control System

            C

CAVOK	Ceiling And Visibility OK
CA	Conflict Alert
CAA	Civil Aviation Authority
CB	Cumulus Nimbus
CTOT	Calculated Take Off Time
CTR	Control Zone
CVSM	Conventional

            D

DME	Distance Measuring Equipment
DETRESFA	Distress Phase

            E

EATCHIP	European Air Traffic Control Harmonization and Integration Programme
ETA	Estimated Time of Arrival
EATMP	European Air Traffic Management Programme
EOBT	Estimated Off Block Time
ETO	Estimated Time Over

            F

FIR	Flight Information Region
FAA	Federal Aviation Authority
FIC	Flight Information Centre

            G

GAT	General Air Traffic
GPS	Global Positioning System

            H

HF	High Frequency
HUD	Head Up Display

            I

ICAO	International Civil Aviation Organization
IFR	Instrument Flight Rules
ILS	Instrument Landing System
IMC	Instrument Meteorological Conditions
INS	Inertial Navigation System

            N

NOTAM	Notice To Airman
NDB	Non Directional Beacon

            P

PAX (POB)	Persons on Board
PAPI	Precision Approach Path Indicator
PSR	Primary Surveillance Radar

            R

RADAR	RAdio Detection And Ranging
RNAV	Area Navigation
RCF	Radio Communication Failure
RVSM	Reduced Vertical Separation Minima (Over Europe since Jan 24, 2002)
RTF	Radio Telephony

            S

SAR	Search And Rescue
SID	Standard Instrument Departure
SIGMET	Significant Meteorological Information
SOS	Save Our Souls
SSR	Secondary Surveillance Radar
STAR	Standard (Terminal) Arrival Route
STCA	Short Term Conflict Alert

            T

TACAN	Tactical Air Navigation aid
TCAS	Traffic alert and Collision Avoidance System
TMA	Terminal Area

            U

UTC	Universal Time Coordinate
UIR	Upper (Flight)  Information Region
UHF	Ultra High Frequency
UPS	Uninterruptible Power Supply

            V

VFR	Visual Flight Rules
VASIS	Visual Approach Slope Indicator System
VHF	Very High Frequency
VIP	Very Important Person
VMC	Visual Meteorological Conditions
VOLMET	In-Flight Meteorological Information
VOR	Very high frequency Omni directional Range station
VORTAC	Very high frequency Omni directional Range station & Tactical Air Navigation aid
VRC	Voice Recorder

            Z

Z (Zulu)

Local Time