Acronyms
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T
| Acronym | Meaning | Source |
| T | Temperature | AIS |
| T-VASIS | 'T'Visual Approach Slope Indicator System (pronounced 'TEE-VAR-SIS') | AIS |
| TA | Transition Altitude | AIS |
| TA | Traffic advisory | ICAO/AIP |
| TAAATS | The Australian Advanced Air Traffic System | |
| TAAM | Airservices Australia's Total Airspace Airport and Aerodrome Modeller | AIS |
| TAC | Terminal Area Chart | AIS |
| TACAN | Tactical Air Navigation Aid | AIS |
| TAF | Aerodrome Forecast | AIS |
| TAF | Terminal Area Forcast | |
| TAIL | Tailwind | AIS |
| TAR | Terminal Area Surveillance Area | AIS |
| TAS | True Airspeed | AIS |
| TAT | Terminal Area Thunderstorm Service (meteorological term) | AIS |
| TAWS | Terrain awareness and warning system | CAO 20.18 |
| TAWS-B+ system | A terrain awareness and warning system that is equipped with a visual display and complies with the requirements for Class B equipment expressed in TSO-C151, TSO-C151a or TSO-C151b. | CAO Part 20, Section 20.18, Issue 9 |
| TAX | Taxiing, Taxi | AIS |
| TBA | To be advised | AIS |
| TBO | Time Between Overhauls | WATOG |
| TC | Type Certificate | CASR Part 21 |
| TC | Tropical Cyclone | AIS |
| TC5 | Technical Committee 5 - AME Licensing Committee established under RFP | CASA |
| TCAC | Tropical Cyclone Advisory Centre | |
| TCAS | Traffic alert and collision avoidance system | ICAO |
| TCDS | Type certificate data sheet | CASR Part 21 |
| TCH | Threshold Crossing Height | AIS |
| TCO | Training and Checking Organisation | |
| TCTA | Trans-continental Control Area | AIS |
| TCU | Towering Cumulus (met) | AIS |
| TDO | Tornado | AIS |
| TDZ | Touchdown Zone | AIS |
| TECR | Technical Reason | AIS |
| TEL | Telephone | AIS |
| TEM | (Illustrated) Tool And Equipment Manual | WATOG |
| TEM | Threat and Error Management | |
| TEMPO | Temporary, Temporarily (meteorologically) | AIS |
| TERPs | Terminal and En-route procedures | AIS |
| TFC | Traffic | AIS |
| TFR | Terrain Following Radar (by the MIL) | AIS |
| TGL | Touch & Go Landing | AIS |
| TGS | Taxiing Guidance System | AIS |
| THR | Threshold | AIS |
| THRU | Through | AIS |
| THU | Thursday | AIS |
| TIBA | Traffic Information Broadcasts by Aircraft | AIS |
| TIL | Until | AIS |
| TINR | Telecommunications Infrastructure Network Replacement | |
| TIP | Until Past (place) | AIS |
| TIS | Time in service | |
| TKOF | Take-off | AIS |
| TLOF | Touchdown and lift-off area | ICAO |
| TLS | Transponder Landing System | |
| TLW | Time Limited WIP (work in progress) | AIS |
| TMA | Terminal Control Area | AIS |
| TMG | Track Made Good | |
| TNA | Training Needs Analysis | |
| TNA | Turn Altitude | AIS |
| TNH | Turn Height | AIS |
| TNS | Transitional Surface | AIS |
| TOC | Top of Climb | AIS |
| TOC | ATM Target Operational Concept | |
| TODA | Take-off distance available | ICAO |
| TOP | Cloud Top | AIS |
| TORA | Take-off run available | ICAO |
| TOT | Turbine Outlet Temperature | |
| TP | Turning Point | AIS |
| TR | Track | AIS |
| TRA | Temporary Reserved Airspace | AIS |
| TRAN | Transition | AIS |
| TRANS | Transmits, Transmitter | AIS |
| Trike | A manned, powered hang-glider | |
| TRL | Transition Level | AIS |
| TROP | Tropopause | AIS |
| TS... | Thunderstorm (followed by RA=rain, SN=snow, PE=ice pellets, GR=hail, GS=small hail and/or snow pellets or combinations thereof, eg TSRASN = thunderstorm with rain and snow) | AIS |
| TSI | Time Since Installation | WATOG |
| TSO | Technical Standard Order | |
| TSO | Time Since Overhaul | WATOG |
| TTF | Trend Type Forecast | AIS |
| TTMRA | Trans Tasman Mutual Recognition Agreement | |
| TUE | Tuesday | AIS |
| TURB | Turbulence | AIS |
| TWR | Aerodrome Control Tower, Aerodrome Control | AIS |
| TWY | Taxiway | AIS |
| TWYL | Taxiway Link | AIS |
| TYP | Type of Aircraft | AIS |
| TYPH | Typhoon | AIS |