Acronym List - An index of aviation acronyms

This page comprises a list of those seemingly thousands of acronyms that occur in aviation and aircraft building arranged in alphabetical order.

If a term you are searching for isn't here, see also AviationTerminology. That is a page of aviation terms, rather than abbreviations or acronyms. There is a list on acronyms that don't lend themselves to alphabetization at the bottom of the page. See Non-Alphabetical Acronyms Below that is a whole lot of terms I still must format into the table below. See Unformatted Content

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

| IAS || IAS || Indicated Airspeed

Non-alphabetical acronyms

Content still needing to be turned into formatted wiki text:

AFSS Automated Flight Service Station AFTN Automated Fixed Telecommunications Network AID Airport Information Desk AIG Airbus Industries Group AIP Airport Improvement Plan AIRMET Airmen's Meteorological Information AIRNET Airport Network Simulation Model AIS Aeronautical Information Service AIT Automated Information Transfer ALP Airport Layout Plan ALS Approach Lighting System ALSF1 ALS with Sequenced Flashers I ALSF2 ALS with Sequenced Flashers II ALSIP Approach Lighting System Improvement Plan ALTRV Altitude Reservation AMASS Airport Movement Area Safety System AMCC ACF/ARTCC Maintenance Control Center AMOS Automated Meteorological Observation Station AMP ARINC Message Processor (OR) Airport Master Plan AMVER Automated Mutual Assistance Vessel Rescue System ANC Alternate Network Connectivity ANCA Airport Noise and Capacity Act ANG Air National Guard ANGB Air National Guard Base ANMS Automated Network Monitoring System ANSI American National Standards Group AOA Air Operations Area AP Acquisition Plan APP Approach APS Airport Planning Standard AQAFO Aeronautical Quality Assurance Field Office ARAC Army Radar Approach Control (AAF) ARAC Aviation Rulemaking Advisory Committee ARCTR FAA Aeronautical Center or Academy ARF Airport Reservation Function ARFF Aircraft Rescue and Fire Fighting ARINC Aeronautical Radio Inc. ARLNO Airline Office ARO Airport Reservation Office ARP Airport Reference Point ARSA Airport Service Radar Area ARSR Air Route Surveillance Radar ARTCC Air Route Traffic Control Center ARTS Automated Radar Terminal System ASAS Aviation Safety Analysis System ASC AUTODIN Switching Center ASCP Aviation System Capacity Plan ASD Aircraft Situation Display ASDA Accelerate Stop Distance Available ASLAR Aircraft Surge Launch And Recovery ASM Available Seat Mile ASP Arrival Sequencing Program ASOS Automatic Surface Observation System ASQP Airline Service Quality Performance ASR Airport Surveillance Radar ASTA Airport Surface Traffic Automation ASV Airline Schedule Vendor AT Air Traffic ATA Air Transport Association of America ATAS Airspace and Traffic Advisory Service ATCAA Air Traffic Control Assigned Airspace AT&T American Telephone and Telegraph AT&T ASDC AT&T Agency Service Delivery Center AT&T CSA AT&T Customer Support Associate ATCBI Air Traffic Control Beacon Indicator ATCCC Air Traffic Control Command Center ATCO Air Taxi Commercial Operator ATCRB Air Traffic Control Radar Beacon ATCRBS Air Traffic Control Radar Beacon System ATCSCC Air Traffic Control Systems Command Center ATCT Airport Traffic Control Tower ATISR ATIS Recorder ATM Air Traffic Management ATM Asynchronous Transfer Mode ATMS Advanced Traffic Management System ATN Aeronautical Telecommunications Network ATODN AUTODIN Terminal (FUS) ATOVN AUOTVON (Facility) ATOMS Air Traffic Operations Management System ATSCCP ATS Contingency Command Post ATTIS AT&T Information Systems AUTODIN DoD Automatic Digital Network AUTOVON DoD Automatic Voice Network AVON AUTOVON Service AVN Aviation Standards National Field Office, Oklahoma City AWIS Airport Weather Information AWP Aviation Weather Processor AWPG Aviation Weather Products Generator

BART Billing Analysis Reporting Tool (GSA software tool) BASIC Basic Contract Observing Station BCA Benefit/Cost Analysis BCR Benefit/Cost Ratio BDAT Digitized Beacon Data BMP Best Management Practices BOC Bell Operating Company bps bits per second BRI Basic Rate Interface BRL Building Restriction Line BUEC Back-up Emergency Communications BUECE Back-up Emergency Communications Equipment

C CARF Central Altitude Reservation Facility CASFO Civil Aviation Security Office CAT Category CAT Clear Air Turbulence CAU Crypto Ancillary Unit CBI Computer Based Instruction CBT Computer Based Training CCC Communications Command Center CCCC Staff Communications CCCH Central Computer Complex Host CC&O Customer Cost and Obligation CCSD Command Communications Service Designator CCS7-NI Communication Channel Signal-7 Network Interconnect CCU Central Control Unit CD Common Digitizer CDR Cost Detail Report CDT Controlled Departure Time CDTI Cockpit Display of Traffic Information CENTX Central Telephone Exchange CEP Capacity Enhancement Program CEQ Council on Environmental Quality CERAP Central Radar Approach CFC Central Flow Control CFCF Central Flow Control Facility CFCS Central Flow Control Service CFIT Controlled Flight Into Terrain CFR Code of Federal Regulations CFWP Central Flow Weather Processor CFWU Central Flow Weather Unit CGAS Coast Guard Air Station CLC Course Line Computer CLIN Contract Line Item CLT Calculated Landing Time CM Commercial Service Airport CNMPS Canadian Minimum Navigation Performance Specification Airspace CNS Consolidated NOTAM System CNSP Consolidated NOTAM System Processor CO Central Office COE U.S. Army Corps of Engineers COMCO Command Communications Outlet CONUS Continental United States CORP Private Corporation other than ARINC or MITRE CPE Customer Premise Equipment CPMIS Consolidated Personnel Management Information System CRA Conflict Resolution Advisory CRDA Converging Runway Display Aid CRT Cathode Ray Tube CSA Communications Service Authorization CSIS Centralized Storm Information System CSO Customer Service Office CSR Communications Service Request CSS Central Site System C/S/S/N Capacity/Safety/Security/Noise CTA Controlled Time of Arrival CTA Control Area CTA/FIR Control Area/Flight Information Region CTAF Common Traffic Advisory Frequency CTAS Center Tracon Automation System CTMA Center Traffic Management Advisor CUPS Consolidated Uniform Payroll System CVFR Controlled Visual Flight Rules CVTS Compressed Video Transmission Service CW Continuous Wave CWSU Central Weather Service Unit CWY Clearway

D DA Direct Access DA Decision Altitude/Decision Height DA Descent Advisor DABBS DITCO Automated Bulletin Board System DAIR Direct Altitude and Identity Readout DAR Designated Agency Representative DARC Direct Access Radar Channel dBA Decibels A-weighted DBCRC Defense Base Closure and Realignment Commission DBE Disadvantaged Business Enterprise DBMS Data Base Management System DBRITE Digital Bright Radar Indicator Tower Equipment DCA Defense Communications Agency DCAA Dual Call Automatic Answer Device DCCU Data Communications Control Unit DCE Data Communications Equipment DDA Dedicated Digital Access DDD Direct Distance Dialing DDM Difference in Depth of Modulation DDS Digital Data Service DEA Drug Enforcement Agency DEDS Data Entry and Display System DEIS Draft Environmental Impact Statement DEP Departure DF Direction Finder DFAX Digital Facsimile DFI Direction Finding Indicator DGPS Differential Global Positioning Satellite (System) DH Decision Height DID Direct Inward Dial DIP Drop and Insert Point DIRF Direction Finding DITCO Defense Information Technology Contracting Office Agency DME Distance Measuring Equipment DME/P Precision Distance Measuring Equipment DMN Data Multiplexing Network DNL Day-Night Equivalent Sound Level (Also called Ldn) DOD Direct Outward Dial DoD Department of Defense DOI Department of Interior DOS Department of State DOT Department of Transportation DOTS Dynamic Ocean Tracking System DOTCC Department of Transportation Computer Center DSCS Digital Satellite Compression Service DSUA Dynamic Special Use Airspace DTS Dedicated Transmission Service DUAT Direct User Access Terminal DVFR Defense Visual Flight Rules DVFR Day Visual Flight Rules DVOR Doppler Very High Frequency Omni-Directional Range DYSIM Dynamic Simulator

E E-MSAW En-Route Automated Minimum Safe Altitude Warning EA Environmental Assessment EARTS En Route Automated Radar Tracking System ECOM En Route Communications ECVFP Expanded Charted Visual Flight Procedures EDCT Expedite Departure Path EFAS En Route Flight Advisory Service EFC Expect Further Clearance EFIS Electronic Flight Information Systems EIAF Expanded Inward Access Features EIS Environmental Impact Statement ELT Emergency Locator Transmitter ELWRT Electrowriter EMAS Engineered Materials Arresting System EMPS En Route Maintenance Processor System EMS Environmental Management System ENAV En Route Navigational Aids EPA Environmental Protection Agency EPS Engineered Performance Standards EOF Emergency Operating Facility EPSS Enhanced Packet Switched Service ERAD En Route Broadband Radar ESEC En Route Broadband Secondary Radar ESP En Route Spacing Program ESYS En Route Equipment Systems ESF Extended Superframe Format ETA Estimated Time of Arrival ETE Estimated Time En Route ETG Enhanced Target Generator ETMS Enhanced Traffic Management System ETN Electronic Telecommunications Network EVAS Enhanced Vortex Advisory System EVCS Emergency Voice Communications System

F FAA Federal Aviation Administration F&E Facility and Equipment FAAAC FAA Aeronautical Center FAACIS FAA Communications Information System FAATC FAA Technical Center FAC Facility FAF Final Approach Fix FAP Final Approach Point FAPM FTS2000 Associate Program Manager FAR Federal Aviation Regulation FAATSAT FAA Telecommunications Satellite FAST Final Approach Spacing Tool FAX Facsimile Equipment FBO Fixed Base Operator FBS Fall Back Switch FCC Federal Communications Commission FCLT Freeze Calculated Landing Time FCOM FSS Radio Voice Communications FCPU Facility Central Processing Unit FDAT Flight Data Entry and Printout (FDEP) and Flight Data Service FDE Flight Data Entry FDEP Flight Data Entry and Printout FDIO Flight Data Input/Output FDIOC Flight Data Input/Output Center FDIOR Flight Data Input/Output Remote FDM Frequency Division Multiplexing FDP Flight Data Processing FED Federal FEIS Final Environmental Impact Statement FEP Front End Processor FFAC From Facility FIFO Flight Inspection Field Office FIG Flight Inspection Group FINO Flight Inspection National Field Office FIPS Federal Information Publication Standard FIR Flight Information Region FIRE Fire Station FIRMR Federal Information Resource Management Regulation FL Flight Level FLOWSIM Traffic Flow Planning Simulation FMA Final Monitor Aid FMF Facility Master File FMIS FTS2000 Management Information System FMS Flight management System FNMS FTS2000 Network Management System FOIA Freedom Of Information Act FONSI Finding of No Significant Impact FP Flight Plan FRC Request Full Route Clearance FSAS Flight Service Automation System FSDO Flight Standards District Office FSDPS Flight Service Data Processing System FSEP Facility/Service/Equipment Profile FSP Flight Strip Printer FSPD Freeze Speed Parameter FSS Flight Service Station FSSA Flight Service Station Automated Service FSTS Federal Secure Telephone Service FSYS Flight Service Station Equipment Systems FTS Federal Telecommunications System FTS2000 Federal Telecommunications System 2000 FUS Functional Units or Systems FWCS Flight Watch Control Station

G GA General Aviation GAA General Aviation Activity GAAA General Aviation Activity and Avionics GADO General Aviation District Office GCA Ground Control Approach GNAS General National Airspace System GNSS Global Navigation Satellite System GOES Geostationary Operational Environmental Satellite GOESF GOES Feed Point GOEST GOES Terminal Equipment GPRA Government Performance Results Act GPS Global Positioning Satellite GPWS Ground Proximity Warning System GRADE Graphical Airspace Design Environment GS Glide Slope Indicator GSA General Services Administration GSE Ground Support Equipment

H H Non-Directional Radio Homing Beacon (NDB) HAA Height Above Airport HAL Height Above Landing HARS High Altitude Route System HAT Height Above Touchdown HAZMAT Hazardous Materials HCAP High Capacity Carriers HLDC High Level Data Link Control HDME NDB with Distance Measuring Equipment HDQ FAA Headquarters HELI Heliport HF High Frequency HH NDB, 2kw or More HI-EFAS High Altitude EFAS HOV High Occupancy Vehicle HSI Horizontal Situation Indicators HUD Housing and Urban Development HWAS Hazardous In-Flight Weather Advisory Hz HERTZ

I IA Indirect Access IAF Initial Approach Fix I/AFSS International AFSS IAP Instrument Approach Procedures IAPA Instrument Approach Procedures Automation IBM International Business Machines IBP International Boundary Point IBR Intermediate Bit Rate ICAO International Civil Aviation Organization ICSS International Communications Switching Systems IDAT Interfacility Data IF Intermediate Fix IFCP Interfacility Communications Processor IFDS Interfacility Data System IFEA In-Flight Emergency Assistance IFO International Field Office IFR Instrument Flight Rules IFSS International Flight Service Station ILS Instrument Landing System IM Inner Marker IMC Instrument Meteorological Conditions INM Integrated Noise Model INS Inertial Navigation System IRMP Information Resources Management Plan ISDN Integrated Services Digital Network ISMLS Interim Standard Microwave Landing System ITI Interactive Terminal Interface IVRS Interim Voice Response System IW Inside Wiring

K Kbps Kilobits Per Second Khz Kilohertz KVDT Keyboard Video Display Terminal

L LAA Local Airport Advisory LAAS Low Altitude Alert System LABS Leased A B Service LABSC LABS GS-200 Computer LABSR LABS Remote Equipment LABSW LABS Switch System LAHSO Land and Hold Short Operation LAN Local Area Network LATA Local Access and Transport Area LAWRS Limited Aviation Weather Reporting System LCF Local Control Facility LCN Local Communications Network LDA Localizer Directional Aid LDA Landing Directional Aid LDIN Lead-in Lights LEC Local Exchange Carrier LF Low Frequency LINCS Leased Interfacility NAS Communications System LIS Logistics and Inventory System LLWAS Low Level Wind Shear Alert System LM/MS Low/Medium Frequency LMM Locator Middle Marker LMS LORAN Monitor Site LOC Localizer LOCID Location Identifier LOI Letter of Intent LOM Compass Locator at Outer Marker LORAN Long Range Aid to Navigation LPV Lateral Precision Performance with Vertical Guidance LRCO Limited Remote Communications Outlet LRNAV Long Range Navigation LRR Long Range Radar

M MAA Maximum Authorized Altitude MALS Medium Intensity Approach Lighting System MALSF MALS with Sequenced Flashers MALSR MALS with Runway Alignment Indicator Lights MAP Maintenance Automation Program MAP Military Airport Program MAP Missed Approach Point MAP Modified Access Pricing Mbps Megabits Per Second MCA Minimum Crossing Altitude MCAS Marine Corps Air Station MCC Maintenance Control Center MCL Middle Compass Locater MCS Maintenance and Control System MDA Minimum Descent Altitude MDT Maintenance Data Terminal MEA Minimum En Route Altitude METI Meteorological Information MF Middle Frequency MFJ Modified Final Judgment MFT Meter Fix Crossing Time/Slot Time MHA Minimum Holding Altitude Mhg MegHERTZ MIA Minimum IFR Altitudes MIDO Manufacturing Inspection District Office MIS Meteorological Impact Statement MISC Miscellaneous MISO Manufacturing Inspection Satellite Office MIT Miles In Trail MITRE Mitre Corporation MLS Microwave Landing System MM Middle Marker MMC Maintenance Monitoring Console MMS Maintenance Monitoring System MNPS Minimum Navigation Performance Specification MNPSA Minimum Navigation Performance Specifications Airspace MOA Memorandum of Agreement MOA Military Operations Area MOCA Minimum Obstruction Clearance Altitude MODE C Altitude Encoded Beacon Reply MODE C Altitude Reporting Mode of Secondary Radar MODE S Mode Select Beacon System MOU Memorandum of Understanding MPO Metropolitan Planning Organization MPS Maintenance Processor Subsystem (OR) Master Plan Supplement MRA Minimum Reception Altitude MRC Monthly Recurring Charge MSA Minimum Safe Altitude MSAW Minimum Safe Altitude Warning MSL Mean Sea Level MSN Message Switching Network MTCS Modular Terminal Communications System MTI Moving Target Indicator MUX Multiplexor MVA Minimum Vectoring Altitude MVFR Marginal Visual Flight Rules

N NADA NADIN Concentrator NADIN National Airspace Data Interchange Network NADSW NADIN Switches NAILS National Airspace Integrated Logistics Support NAMS NADIN IA NAPRS National Airspace Performance Reporting System NAS National Airspace System or Naval Air Station NASDC National Aviation Safety Data NASP National Airspace System Plan NASPAC National Airspace System Performance Analysis Capability NATCO National Communications Switching Center NAVAID Navigation Aid NAVMN Navigation Monitor and Control NAWAU National Aviation Weather Advisory Unit NAWPF National Aviation Weather Processing Facility NCAR National Center for Atmospheric Research; Boulder, CO NCF National Control Facility NCIU NEXRAD Communications Interface Unit NCP Noise Compatibility Program NCS National Communications System NDB Non-Directional Radio Homing Beacon NDNB NADIN II NEM Noise Exposure Map NEPA National Environmental Policy Act NEXRAD Next Generation Weather Radar NFAX National Facsimile Service NFDC National Flight Data Center NFIS NAS Facilities Information System NI Network Interface NICS National Interfacility Communications System NPE Non-primary Airport Entitlement NPIAS National Plan of Integrated Airport Systems NM Nautical Mile NMAC Near Mid Air Collision NMC National Meteorological Center NMCE Network Monitoring and Control Equipment NMCS Network Monitoring and Control System NOAA National Oceanic and Atmospheric Administration NOC Notice Of Completion NOTAM Notice to Airmen NPDES National Pollutant Discharge Elimination System NPIAS National Plan of Integrated Airport Systems NRC Non-Recurring Charge NRCS National Radio Communications Systems NSAP National Service Assurance Plan NSRCATN National Strategy to Reduce Congestion on America's Transportation Network NSSFC National Severe Storms Forecast Center NSSL National Severe Storms Laboratory; Norman, OK NTAP Notices To Airmen Publication NTP National Transportation Policy NTSB National Transportation Safety Board NTZ No Transgression Zone NWS National Weather Service NWSR NWS Weather Excluding NXRD NSWRH NWS Regional Headquarters NXRD Advanced Weather Radar System

O OAG Official Airline Guide OALT Operational Acceptable Level of Traffic OAW Off-airway Weather Station ODAL Omnidirectional Approach Lighting System ODAPS Oceanic Display and Processing Station OEP Operational Evolution Plan / Partnership OFA Object Free Area OFDPS Offshore Flight Data Processing System OFT Outer Fix Time OFZ Obstacle Free Zone OM Outer Marker OMB Office of Management and Budget ONER Oceanic Navigational Error Report OPLT Operational Acceptable Level of Traffic OPSW Operational Switch OPX Off Premises Exchange ORD Operational Readiness Demonstration OTR Oceanic Transition Route OTS Organized Track System

P PABX Private Automated Branch Exchange PAD Packet Assembler/Disassembler PAM Peripheral Adapter Module PAPI Precision Approach Path Indicator PAR Precision Approach Radar PAR Preferential Arrival Route PATWAS Pilots Automatic Telephone Weather Answering Service PBCT Proposed Boundary Crossing Time PBRF Pilot Briefing PBX Private Branch Exchange PCA Positive Control Airspace PCM Pulse Code Modulation PDAR Preferential Arrival And Departure Route PDC Pre-Departure Clearance PDC Program Designator Code PDR Preferential Departure Route PDN Public Data Network PFC Passenger Facility Charge PGP Planning Grant Program PIC Principal Interexchange Carrier PIDP Programmable Indicator Data Processor PIREP Pilot Weather Report PMS Program Management System POLIC Police Station POP Point Of Presence POT Point Of Termination PPIMS Personal Property Information Management System PR Primary Commercial Service Airport PRI Primary Rate Interface PRM Precision Runway Monitor PSDN Public Switched Data Network PSN Packet Switched Network PSS Packet Switched Service PSTN Public Switched Telephone Network PTC Presumed-to-Conform PUB Publication PUP Principal User Processor PVC Permanent Virtual Circuit PVD Plan View Display

R RAPCO Radar Approach Control (USAF) RAPCON Radar Approach Control (FAA) RATCC Radar Air Traffic Control Center RATCF Radar Air Traffic Control Facility (USN) RBC Rotating Beam Ceilometer RBDPE Radar Beacon Data Processing Equipment RBSS Radar Bomb Scoring Squadron RCAG Remote Communications Air/Ground RCC Rescue Coordination Center RCF Remote Communication Facility RCCC Regional Communications Control Centers RCIU Remote Control Interface Unit RCL Radio Communications Link RCLR RCL Repeater RCLT RCL Terminal RCO Remote Communications Outlet RCU Remote Control Unit RDAT Digitized Radar Data RDP Radar Data Processing RDSIM Runway Delay Simulation Model REIL Runway End Identification Lights RF Radio Frequency RL General Aviation Reliever Airport RMCC Remote Monitor Control Center RMCF Remote Monitor Control Facility RML Radio Microwave Link RMLR RML Repeater RMLT RML Terminal RMM Remote Maintenance Monitoring RMMS Remote Maintenance Monitoring System RMS Remote Monitoring Subsystem RMSC Remote Monitoring Subsystem Concentrator RNAV Area Navigation RNP Required Navigation Performance ROD Record of Decision ROSA Report of Service Activity ROT Runway Occupancy Time RP Restoration Priority RPC Restoration Priority Code RPG Radar Processing Group RPZ Runway Protection Zone RRH Remote Reading Hygrothermometer RRHS Remote Reading Hydrometer RRWDS Remote Radar Weather Display RRWSS RWDS Sensor Site RSA Runway Safety Area RSAT Runway Safety Action Team RSS Remote Speaking System RT Remote Transmitter RT & BTL Radar Tracking And Beacon Tracking Level RTAD Remote Tower Alphanumerics Display RTCA Radio Technical Commission for Aeronautics RTP Regional Transportation Plan RTR Remote Transmitter/Receiver RTRD Remote Tower Radar Display RVR Runway Visual Range RW Runway RWDS Same as RRWDS RWP Real-time Weather Processor

S S/S Sector Suite SAC Strategic Air Command SAFI Semi Automatic Flight Inspection SALS Short Approach Lighting System SATCOM Satellite Communications SAWRS Supplementary Aviation Weather Reporting System SBGP State Block Grant Program SCC System Command Center SCVTS Switched Compressed Video Telecommunications Service SDF Simplified Direction Finding SDF Software Defined Network SDIS Switched Digital Integrated Service SDP Service Delivery Point SDS Switched Data Service SEL Single Event Level SELF Simplified Short Approach Lighting System With Sequenced Flashing Lights SFAR38 Special Federal Aviation Regulation 38 SHPO State Historic Preservation Officer SIC Service Initiation Charge SID Station Identifier SID Standard Instrument Departure SIGMET Significant Meteorological Information SIMMOD Airport and Airspace Simulation Model SIP State Implementation Plan SM Statute Miles SMGC Surface Movement Guidance and Control SMPS Sector Maintenance Processor Subsystem SMS Safety Management System SMS Simulation Modeling System SNR Signal-to-Noise Ratio, also: S/N SOC Service Oversight Center SOAR System of Airports Reporting SOIR Simultaneous Operations On Intersecting Runways SOIWR Simultaneous Operations on Intersecting Wet Runways SRAP Sensor Receiver and Processor SSALF SSALS with Sequenced Flashers SSALR Simplified Short Approach Lighting System SSB Single Side Band STAR Standard Terminal Arrival Route STD Standard STMUX Statistical Data Multiplexer STOL Short Takeoff and Landing SURPIC Surface Picture SVCA Service A SVCB Service B SVCC Service C SVCO Service O SVFO Interphone Service F (A) SVFB Interphone Service F (B) SVFC Interphone Service F (C) SVFD Interphone Service F (D) SVFR Special Visual Flight Rules

T T1MUX T1 Multiplexer TAAS Terminal Advance Automation System TACAN Tactical Aircraft Control and Navigation TACR TACAN at VOR TAF Terminal Area Forecast TARS Terminal Automated Radar Service TAS True Air Speed TATCA Terminal Air Traffic Control Automation TAVT Terminal Airspace Visualization Tool TCA Traffic Control Airport or Tower Control Airport TCA Terminal Control Area TCACCIS Transportation Coordinator Automated Command and Control Information System TCAS Traffic Alert And Collision Avoidance System TCC DOT Transportation Computer Center TCCC Tower Control Computer Complex TCE Tone Control Equipment TCLT Tentative Calculated Landing Time TCO Telecommunications Certification Officer TCOM Terminal Communications TCS Tower Communications System TDLS Tower Data-Link Services TDMUX Time Division Data Multiplexer TDWR Terminal Doppler Weather Radar TELCO Telephone Company TELMS Telecommunications Management System TERPS Terminal Instrument Procedures TFAC To Facility TH Threshold TIMS Telecommunications Information Management System TIPS Terminal Information Processing System TL Taxilane TMA Traffic Management Advisor TMC Traffic Management Coordinator TMC/MC Traffic Management Coordinator/Military Coordinator TMCC Terminal Information Processing System TMCC Traffic Management Computer Complex TMF Traffic Management Facility TML Television Microwave Link TMLI Television Microwave Link Indicator TMLR Television Microwave Link Repeater TMLT Television Microwave Link Terminal TM&O Telecommunications Management and Operations TMP Traffic Management Processor TMS Traffic Management System TMSPS Traffic Management Specialists TMU Traffic Management Unit TODA Takeoff Distance Available TOF Time Of Flight TOFMS Time of Flight Mass Spectrometer TOPS Telecommunications Ordering and Pricing System (GSA software tool) TORA Take-off Run Available TNAV Terminal Navigational Aids TR Telecommunications Request TRACAB Terminal Radar Approach Control in Tower Cab TRACON Terminal Radar Approach Control Facility TRAD Terminal Radar Service TRB Transportation Research Board TRNG Training TSA Taxiway Safety Area TSEC Terminal Secondary Radar Service TSP Telecommunications Service Priority TSR Telecommunications Service Request TSYS Terminal Equipment Systems TTMA TRACON Traffic Management Advisor TTY Teletype TVOR Terminal VHF Omnidirectional Range TW Taxiway TWEB Transcribed Weather Broadcast TWR Tower (non-controlled) TY Type (FAACIS)

U USC United States Code USOC Uniform Service Order Code