- TA
Traffic Advisory (TCAS)
- TAA
Terminal Arrival Area
- TACAN
Tactical air navigation system
- TACAN
Tactical Air Navigation
- TAD
Terrain Awareness Display
- TAF
Terminal Area Forecast
- TAF
Terminal Aerodrome Forecast
- TAM
Total Airport Management
- TAR
Terminal Approach Radar
- TAS
True airspeed
- TAS
True Airspeed
- TAT
True Air Temperature or Total Air Temperature
- TAWS
Terrain Awareness Warning System
- TBO
Time Before Overhaul or Time Between Overhaul
- TCA
Terminal control area
- TCA
Throttle Control Assembly or Terminal Control Area
- TCAA
Transatlantic Common Aviation Area
- TCAS
Traffic Collision Avoidance System
- TCAS
Traffic Collision Avoidance System (US-FAA)
- TCAS
Traffic Collision Alert and avoidance System
- TCF
Terrain Clearance Floor
- TCH
Threshold Crossing Height
- TCN
TACA
- TCU
TACAN Control Unit
- TDOP
Time Dilution Of Precision
- TDR
Transponder (in some cases)
- TERPS
Terminal Instrument Procedures or Terminal EnRoute Procedures
- TERPS
Terminal Procedures
- TFR
Temporary Flight Restrictions
- TFR
Temporary Flight Restriction
- TFT
Thin Film Transistor
- TGL
Temporary Guidance Leaflet
- TGT
Turbine Gas Temperature or Target
- THDG
True Heading
- THR
Runway Threshold
- TIAS
True Indicated Airspeed
- TIS
Traffic Information Service
- TK
Track Angle
- TKE
Track Angle Error
- TLA
Three Letter Acronym
- TO/GA
Take-off/go around
- TOD
Top of Descent
- TORA
Take-off Run Available
- TOT
Turbine Outlet Temperature
- TOW
Take-off weight
- TOWS
Take-off warning system
- TP
Turning Point at Missed Approach
- TR or T/R
Transmitter Receiver or transceiver
- TRA
Temporary Reserved Airspace
- TRACON
Terminal Radar Approach Control
- TRACON
Terminal Radar Approach Control
- TRANS
Transmit, Transmission, or Transition[disambiguation needed]
- TRK
Track
- TRP
Mode S Transponder
- TSA
Transportation Security Administration
- TTAF
Total Time Air Frame
- TTR
TCAS II Transmitter/Receiver
- TTS
Time to Station
- TTSN
Total Time Since New
- TTSO
Total Time Since Overhaul
- TVE
Total Vertical Error
- TWDL
Two-Way Data Link, or Terminal Weather Data Link
- TWDR
Terminal Doppler Weather Radar
- TWIC
Transport Worker ID Card
- TWIP
Terminal Weather Information for Pilots
- TWOV
Transit Without Visa
- TWR
Tower
- TWR
Terminal Weather Radar
- TWY
Taxiway
- TX
Transmit
- Tach
Tachometer
