| 1 | traffic advisory (see TCAS) | TA |
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| 2 | terminal arrival area | TAA |
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| 3 | thrust asymmetry compensation | TAC |
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| 4 | tactical air navigation | TACAN |
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| 5 | terminal aerodrome forecast | TAF |
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| 6 | thermal anti-ice | TAI |
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| 7 | total airport management | TAM |
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| 8 | terminal approach radar | TAR |
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| 9 | true airspeed | TAS |
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| 10 | total air temperature | TAT |
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| 11 | terrain awareness and warning system | TAWS |
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| 12 | time between overhauls | TBO |
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| 13 | transient bleed valve | TBV |
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| 14 | towering cumulus | TC |
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| 15 | turn coordinator | TC |
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| 16 | True Course | TC |
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| 17 | type certificate | TC |
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| 18 | terminal control area | TCA |
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| 19 | traffic collision avoidance system | TCAS |
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| 20 | Transport Canada's Civil Aviation | TCCA |
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| 21 | type certificate data sheet | TCDS |
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| 22 | threshold crossing height | TCH |
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| 23 | thrust computer indicator | TCI |
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| 24 | terminal control unit | TCU |
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| 25 | touchdown zone | TDZ |
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| 26 | terminal procedures | TERPS |
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| 27 | traffic | TFC |
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| 28 | temporary flight restriction | TFR |
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| 29 | transfer gearbox | TGB |
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| 30 | temporary guidance leaflet | TGL |
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| 31 | touch-and-go landing(s) | TGL(S) |
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| 32 | threshold | THLD |
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| 33 | True Heading | TH |
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| 34 | runway threshold | THR |
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| 35 | trimmable horizontal stabilizer, see tailplane | THS |
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| 36 | turbine inlet temperature | TIT |
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| 37 | time-limited dispatch | TLD |
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| 38 | technical logbook (EASA) | TLB |
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| 39 | transponder landing system | TLS |
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| 40 | terminal manoeuvring area (Europe)/terminal control area (USA and Canada) | TMA |
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| 41 | touring motor glider | TMG |
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| 42 | Toolbox Mobile Library (Boeing) | TML |
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| 43 | transponder mandatory zone | TMZ |
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| 44 | Top of Climb (also known as T/C) | TOC |
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| 45 | top of descent | TOD |
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| 46 | take-off distance available | TODA |
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| 47 | take-off/go around | TO/GA |
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| 48 | take-off power | TOP |
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| 49 | take-off runway | TOR |
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| 50 | take-off runway available | TORA |
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| 51 | take-off weight | TOW |
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| 52 | take-off warning system | TOWS |
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| 53 | transformer rectifier | TR |
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| 54 | thrust reversers | TR |
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| 55 | turning point at missed approach | TP |
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| 56 | temporary reserved area (airspace) | TRA |
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| 57 | terminal radar approach control | TRACON |
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| 58 | type rating examiner | TRE |
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| 59 | thrust rating panel | TRP |
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| 60 | technical standard order[2] | TSO |
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| 61 | total time air frame | TTAF |
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| 62 | total time since new | TTSN |
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| 63 | total time since overhaul | TTSO |
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| 64 | Transcribed Weather Broadcasts[4] | TWB |
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| 65 | tail wind component | TWC |
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| 66 | Terminal Wireless LAN Unit | TWLU |
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| 67 | tower | TWR |
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| 68 | taxiway | TWY |
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