| AAL |
above aerodrome level |
| ACD |
airways clearance delivery |
| ADF |
automatic direction finder |
| AESIS |
automatic en route information service |
| AF |
audio frequency |
| AFRU |
aerodrome frequency response unit |
| AGL |
above ground level |
| AI |
attitude indicator |
| AIC |
Aeronautical Information Circular |
| AIP |
Aeronautical Information Publication |
| AIREP |
air report |
| AIS |
aeronautical information service |
| ALA |
aircraft landing area |
| ALT |
altitude |
| AM |
amplitude modulation |
| AMSL |
above mean sea level |
| APP |
approach control |
| ARFOR |
area forecast |
| ASI |
airspeed indicator |
| ATIS |
automatic terminal information service |
| ATPL |
air transport pilot licence |
| ATS |
air traffic services |
| AVGAS |
aviation gasoline |
| AWIB |
aerodrome weather information broadcast |
| AWS |
automatic weather station |
| CAO |
Civil Aviation Order |
| CAR |
Civil Aviation Regulation |
| CASA |
Civil Aviation Safety Authority |
| CASR |
Civil Aviation Safety Regulation |
| CAVOK |
ceiling and visibility OK |
| CENSAR |
centralised SARTIME |
| CERT |
certified aerodrome |
| CFI |
chief flying instructor |
| CG |
centre of gravity |
| CIR |
command instrument rating |
| CLR |
clearance or clear |
| COM |
communications |
| CPL |
commercial pilot licence |
| cps |
cycles per second |
| CST |
central standard time |
| CSuT |
central summer time |
| CTA |
control area/controlled airspace |
| CTAF |
common traffic advisory frequency |
| CTR |
control zone |
| CW |
carrier wave |
| DA |
density altitude |
| DG |
directional gyro |
| DI |
direction indicator |
| DME |
distance measuring equipment |
| ELB |
emergency locator beacon |
| ELT |
emergency locator transmitter |
| EMERG |
emergency |
| ENR |
en route (e.g AIP ENR) |
| ERC |
En Route Chart |
| ERSA |
En Route Supplement Australia |
| EST |
Eastern Standard Time |
| ESuT |
Eastern Summer Time |
| ETA |
estimated time of arrival |
| FAC |
facility |
| FIA |
flight information area |
| FIR |
flight information region |
| FIS |
flight information service |
| FL |
flight level |
| FM |
frequency modulation |
| FPM |
feet per minute |
| FROL |
flight radiotelephone operator licence |
| FS |
flight service |
| FT |
feet |
| GA |
general aviation |
| GEN |
general (e.g. AIP GEN) |
| GFPT |
General Flying Progress Test |
| GNSS |
global navigation satellite system |
| GPS |
global positioning system |
| GS |
groundspeed |
| HDG |
heading |
| HF |
high frequency |
| Hz |
hertz |
| IAS |
indicated airspeed |
| ICAO |
International Civil Aviation Organization |
| IFF |
identification friend/foe |
| IFR |
instrument flight rules |
| ILS |
instrument landing system |
| IMC |
instrument meteorological conditions |
| ISA |
International Standard Atmosphere |
| kHz |
kilohertz |
| KIAS |
knots, indicated airspeed |
| km |
kilometre |
| kt |
knot |
| KTAS |
knots, true airspeed |
| L/D |
lift drag ratio |
| LAME |
licensed aircraft maintenance engineer |
| LF |
low frequency |
| LL |
lower limits |
| LMT |
local mean time |
| LSALT |
lowest safe altitude |
| LST |
local standard time |
| MAP |
manifold absolute pressure |
| MET |
meteorology |
| METAR |
aviation routine weather report |
| MF |
medium frequency |
| MHz |
megahertz |
| MIL |
military aerodrome (could be CTAF after hours) |
| MLJ |
military low jet (route) |
| MP |
manifold pressure |
| MULTICOM |
chatter frequency |
| NAV |
navigation |
| NAVAID |
navigation aid |
| NDB |
non directional beacon |
| NOTAM |
notice to airmen |
| PAX |
passengers |
| PCA |
Planning Chart Australia |
| PIC |
pilot in command |
| POB |
persons on board |
| POH |
pilot’s operating handbook |
| PPL |
private pilot licence |
| PRD |
prohibited, restricted and danger areas |
| PTT |
press to talk (or transmit) |
| PVT |
private category flight |
| QNH |
altimeter pressure datum to show vertical distance above local mean sea level (AMSL) |
| R/T |
radio telephony |
| RA |
recreational aviation |
| RBI |
relative bearing indicator |
| RCC |
rescue coordination centre |
| REG |
registered aerodrome |
| RF |
radio frequency |
| RMI |
radio magnetic indicator |
| ROC |
rate of climb |
| ROD |
rate of descent |
| RPM |
revolutions per minute |
| RPT |
regular public transport |
| RQMNTS |
requirements |
| RTF |
radio telephone |
| RWY |
runway |
| SAR |
search and rescue |
| SARTIME |
a nominated time by which search action will be initiated |
| SARWATCH |
a generic term covering SAR alerting, based on position reporting, scheduled reporting times (SKEDS), or a nominated SARTIME |
| SBY |
standby |
| SIGMET |
significant weather warning |
| SIS |
surveillance information service |
| SMC |
surface movement control |
| SSR |
secondary surveillance radar |
| SUBJ |
subject to |
| TAC |
terminal area chart |
| TAF |
terminal area forecast |
| TAS |
true airspeed |
| TR |
track over the ground |
| TST |
test |
| TWR |
aerodrome control tower |
| UHF |
ultra high frequency |
| UNCR |
unregistered (uncertified) aerodrome |
| UNICOM |
universal communications (frequency) |
| USG |
US gallon |
| UTC |
coordinated universal time |
| UV |
ultraviolet |
| VFR |
visual flight rules |
| VHF |
very high frequency |
| VLF |
very low frequency |
| VMC |
visual meteorological conditions |
| VNC |
visual navigation chart (1,500,000) |
| VOR |
VHF omni-directional radio range |
| VSI |
vertical speed indicator |
| VTC |
Visual Terminal Chart (1,250,000) |
| W/V |
wind velocity |
| WAC |
World Aeronautical Chart (1,1,000,000) |
| WST |
Western Standard Time |
| WX |
weather |
| XW or X-wind |
crosswind |