|
Definition
|
Contraction
|
Usage
|
|
T visual
approach slope indicator system
|
TVASIS
|
ICAO
|
|
TACAN only
|
TAO
|
ATC
|
|
tactical
air command liaison officer
|
TACLO
|
GEN
|
|
tactical
air navigation
|
TACR
|
GEN
|
|
tactical
air navigational aid
|
TACAN
|
GEN
|
|
tactical
customer advocate
|
TCA
|
ATC
|
|
tail wind
|
TAIL
|
ICAO
|
|
tailwind
|
TLWD
|
ATC
|
|
takeoff
|
TKOF
|
GEN
|
|
takeoff
distance available
|
TODA
|
ICAO
|
|
takeoff
gross weight
|
TOG
|
GEN
|
|
takeoff
run available
|
TORA
|
ICAO
|
|
tandum
|
TAND
|
GEN
|
|
taxiing
|
TXG
|
ATC
|
|
taxiing
guidance system
|
TGS
|
ICAO
|
|
taxiway
|
TWY
|
GEN
|
|
taxiway
link
|
TWYL
|
ICAO
|
|
team
supervisor
|
TS
|
GEN
|
|
Technical
Center, FAA
|
ACT
|
GEN
|
|
technical
reason
|
TECR
|
ICAO
|
|
technical
standard order
|
TSO
|
GEN
|
|
teleautograph
|
TELAU
|
GEN
|
|
telecommunications
|
TEL
|
GEN
|
|
telegraph
reply
|
TELRY
|
GEN
|
|
Telemetry
|
TLM
|
ATC
|
|
telephone
|
FONE
|
GEN
|
|
telephone
|
TEL
|
ICAO
|
|
telephone
company
|
TELCO
|
GEN
|
|
telephone
conference
|
TELCON
|
GEN
|
|
telephone
exchange
|
TELEX
|
GEN
|
|
teletype
switching facilities
|
TTS
|
GEN
|
|
teletypewriter
|
TT
|
GEN
|
|
teletypewriter
communications out of service
|
TYPNO
|
GEN
|
|
teletypewriter
communications returned to service
|
TYPOK
|
GEN
|
|
teletypewriter
exchange service
|
TWX
|
GEN
|
|
teletypewriter
station
|
TTY
|
GEN
|
|
temperature
|
T
|
ICAO
|
|
temperature
|
TEMP
|
GEN
|
|
temperature
(PIREP only)
|
TA
|
ATC
|
|
temporary
|
TEMPO
|
METAR
|
|
temporary
|
TMPRY
|
GEN
|
|
temporary
appointment pending establishment of a register
|
TAPER
|
GEN
|
|
temporary
duty
|
TDY
|
GEN
|
|
temporary
reserved airspace
|
TRA
|
ICAO
|
|
tendency
|
TNDCY
|
GEN
|
|
tentative
|
TNTV
|
GEN
|
|
terminal
|
TRML
|
GEN
|
|
terminal
area chart
|
TAC
|
GEN
|
|
terminal
area surveillance radar
|
TAR
|
ICAO
|
|
terminal
area surveillance radar
|
TASR
|
GEN
|
|
terminal
automated radar services
|
TARS
|
GEN
|
|
terminal
communications
|
TCOM
|
GEN
|
|
terminal
control area
|
TCA
|
GEN
|
|
terminal
control area
|
TMA
|
ICAO
|
|
Terminal
Data Link System
|
TDLS
|
GEN
|
|
Terminal
Doppler Weather Radar
|
TDWR
|
ATC
|
|
terminal
forecast
|
TAF
|
METAR
|
|
terminal
information processing system
|
TIPS
|
GEN
|
|
terminal
instrument procedures
|
TERPS
|
GEN
|
|
terminal
radar
|
TRAD
|
GEN
|
|
terminal
radar approach control facility
|
TRACON
|
GEN
|
|
terminal
radar approach control in tower cab
|
TRACAB
|
GEN
|
|
terminal
radar service area
|
TRSA
|
GEN
|
|
terminal
secondary radar beacon
|
TSEC
|
GEN
|
|
terminal
VOR
|
TVOR
|
GEN
|
|
terminate
|
TRMT
|
GEN
|
|
terrain
|
TRRN
|
GEN
|
|
terrain
following
|
TF
|
GEN
|
|
Tethered
Aerostat Radar System
|
TARS
|
GEN
|
|
tetrahedron
|
TET
|
GEN
|
|
Text
|
TXT
|
ICAO
|
|
The last
message received by me was ….
|
LR
|
ICAO
|
|
The last
message sent by me was …or last message was …
|
LS
|
ICAO
|
|
thereafter
|
THRFTR
|
GEN
|
|
thick
|
THK
|
NWS
|
|
thin
|
THN
|
NWS
|
|
This is a
channelcontinuitycheck of transmission to permit comparison of
your record of channel sequence numbers of messages received on the
channel
|
CH
|
ICAO
|
|
This is a
duplicate message (to be used in AFS as a procedure signal)
|
DUPE
|
ICAO
|
|
thousand
|
THSD
|
GEN
|
|
threaten
|
THTN
|
GEN
|
|
threshold
|
THLD
|
GEN
|
|
threshold
|
THR
|
ATC
|
|
threshold
crossing height
|
TCH
|
GEN
|
|
threshold
crossing height downwind
|
TCHD
|
GEN
|
|
threshold
crossing height upwind
|
TCHU
|
GEN
|
|
through
|
THRU
|
GEN
|
|
throughout
|
THRUT
|
GEN
|
|
thunder
|
THDR
|
NWS
|
|
thunderhead
|
THD
|
NWS
|
|
thunderstorm
|
TS
|
METAR
|
|
thunderstorm
|
TSTM
|
NWS
|
|
thunderstorm
information not available
|
TSNO
|