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The JPDO uses a variety of acronyms in its documents and Web site content. This page spotlights many of those acronyms and their full names. Start by clicking any letter below.
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| 3D | Three-Dimensional |
| 3D PAM | Three-Dimensional Path Arrival Management |
| 4-D Wx SAS | Four-Dimensional Weather Single Authoritative Source |
| 4D, 4-D | Four-Dimensional (Latitude, Longitude, Altitude, and Time) |
| 4DT | Four-Dimensional Trajectory |
A
| A/C | Aircraft |
| A/FD | Airport/Facilities Directory (NACO) |
| A/G | Air-to-Ground |
| A/TA | Airlift/Tanker Association |
| AAAE | American Association of Airport Executives |
| AAC | Advanced Airspace Concept (NASA) |
| AAR | Airport Acceptance Rate |
| AAR | Air-to-Air Refueling |
| AATF | Airport and Airway Trust Fund (FAA) |
| AATT | Advanced Air Transportation Technologies (NASA) |
| ABESS | Airline-based En Route Sequencing and Spacing |
| AC | Aircraft |
| ACAS | Airborne Collision Avoidance System |
| ACC | Airport Consultants Council |
| ACD | Automatic Conflict Detection |
| A-CDA | Advanced-Continuous Descent Approach |
| A-CDM | Advanced-Collaborative Decision-Making |
| ACF | Area Control Facility |
| ACI | Aeronautical Communication International |
| ACI | Airports Council International |
| ACI-NA | Airport Council International-North America |
| ACIP | Aviation System Capital Investment Plan |
| ACM | Airborne Conflict Management |
| ACP | ARTS Common Processor |
| ACSS | Aviation Communication & Surveillance Systems |
| ACTD | Advanced Concept Technology Demonstration |
| ADAP | Airport Development Aid Program |
| ADAPT | Automatic Detection and Processing Terminal |
| ADC | Air Defense Command |
| ADDS | Aviation Digital Data Service |
| ADG | Accommodation Drafting Group (Aeronautical Telecommunication Network) |
| ADIZ | Air Defense Identification Zone |
| ADL | Aeronautical Data-Link |
| ADS | Air Defense Sectors (USAF) (NDP) |
| ADS-B | Automatic Dependent Surveillance-Broadcast |
| AEDT | Aviation Environmental Design Tool |
| AF | Air Force |
| AFB | Air Force Base |
| AFC | Advanced Flight Controls |
| AFD | Airline Flight Dispatcher |
| AFIS | Automated Flight Inspection System |
| AFM | Airspace Flow Management |
| AFP | Airspace Flow Program |
| AFSS | Automated Flight Service Station |
| AFSSVS | AFSS Voice Switch |
| AFTN | Aeronautical Fixed Telecommunication Network |
| AFWA | Air Force Weather Agency |
| AGATE | Advanced General Aviation Transport Experiments (NASA) |
| AGFS | Aviation Gridded Forecast System |
| AIA | Aerospace Industries Association |
| AIAA | American Institute of Aeronautics and Astronautics |
| AIDAP | Aeronautical Integrated Data Access Portal (eNOTAMS) |
| AIDS | Accident/Incident Data System |
| AIM | Aeronautical Information Management |
| AIP | Airport Improvement Program (FAA) |
| AIPA | Aeronautical Information Production Automation |
| AIRE | Atlantic Interoperability Initiative to Reduce Emissions |
| AIRMET | Airmen’s Meteorological Information |
| AIRNAV | Air Navigation |
| AIS | Aeronautical Information Services |
| AIS | Aeronautical Information System |
| ALPA | Air Line Pilots Association |
| ALS | Approach Lighting System |
| AMASS | Airport Movement Area Safety System |
| AMC | Air Mobility Command (USAF) |
| AMOS | Automatic Meteorological Observing Systems |
| AMP | Airspace Management Program |
| AMS | American Meteorological Society |
| AMS | Arrival Metering and Sequencing |
| AMSTAR | Airborne Merging and Spacing for Terminal Arrivals |
| ANICS | Alaska NAS Interfacility Communications System |
| ANSP | Air Navigation Service Provider |
| AO | Airline Operations |
| AO | Airport Operator |
| AOC | Advanced Operational Capability |
| AOC | Airport Operations Center |
| AOPA | Aircraft Owners and Pilots Association |
| APA | Allied Pilots Association |
| APG | Aircraft Performance Group |
| APMT | Aviation Portfolio Management Tool (Environment) |
| APTS | Automated Procedures Tracking System (IAPA) |
| AR | Aerial Refueling |
| ARC | Ames Research Center (NASA) |
| ARC | Aviation Rulemaking Committee |
| ARMD | Aeronautics Research Mission Directorate (NASA) |
| ARSR | Air Route Surveillance Radar |
| ARTCC | Air Route Traffic Control Center |
| ARTS | Automated Radar Terminal System |
| ASAP | Aviation Safety Action Program |
| ASAS | Aviation Safety Analysis System |
| ASCII | American Standard Code for Information Interchange |
| ASD | Aircraft Situational Display |
| ASDE | Airport Surface Detection Equipment |
| ASDI | Aircraft Situation Display to Industry |
| ASIAS | Aviation Safety Information Analysis and Sharing (formerly known as NASDAC) |
| ASOS | Automated Surface Observing System |
| ASP | Airspace Systems Program (NASA) |
| ASP | Aviation Safety Program (FAA) |
| ASPIRE | Asia and South Pacific Initiative to Reduce Emissions |
| ASR | Airport Surveillance Radar |
| ASRS | Aviation Safety Reporting System |
| ASSP | Aviation Safety Strategic (National) Plan |
| AST | Office of Commercial Space Transportation (FAA) |
| ATA | Air Transport Association |
| ATAAS | Advanced Terminal Area Approach Spacing (NASA) |
| ATC | Air Traffic Control |
| ATCA | Air Traffic Control Association |
| ATCBI | Air Traffic Control Beacon Indicator |
| ATCRB | Air Traffic Control Radar Beacon |
| ATCSCC | Air Traffic Control Systems Command Center |
| ATCT | Airport Traffic Control Tower |
| ATFM | Air Traffic Flow Management |
| ATIS | Automated Terminal Information Service |
| ATM | Air Traffic Management |
| ATMB | Air Traffic Management Bureau |
| ATO | Air Traffic Operations |
| ATO | Air Traffic Organization (FAA) |
| ATOS | Air Transportation Oversight System (FAA) |
| ATPAC | Air Traffic Procedures Advisory Committee |
| ATS | Air Traffic Services |
| ATS | Air Transportation System |
| AVID | Airspace Visual Display |
| AVN | Aviation Forecast Weather Model data (NCEP) |
| AVS | Office of Aviation Safety (FAA) |
| AVT | Automated Virtual Tower |
| AWC | Aviation Weather Center |
| AWIN | Aviation Weather Information |
| AWIPS | Advanced Weather Information Processing System (NWS) |
| AWIS | Automatic Weather Information System (ATCT and TRACON) |
| AWN | Automated Weather Network |
| AWOS | Automated Weather Observing System |
| AWP | Aviation Weather Processor (M1FC system and WMSCR @ NNCCs) |
| AWR | Aviation Weather Research |
B
| BLOS | Beyond Line-of-Sight |
| BRAC | Base Realignment and Closure |
| BRITE | Bright Radar Indicator Terminal Equipment |
| BRL | Building Restriction Line |
| BUEC | Back-up Emergency Communications |
| BUFR | Binary Universal Form for the Representation of Meteorological data (a WMO data encoding scheme) |
C
| C&V | Ceiling & Visibility |
| CAA | Cargo Airline Association |
| CAA | Civil Aviation Authority |
| CAASD | Center for Advanced Aviation System Development (The MITRE Corporation) |
| CAEP | Committee on Aviation Environmental Protection |
| CANSO | Civil Air Navigation Services Organisation |
| CAP | Civil Air Patrol |
| CAR | Civil Air Regulations |
| CARATS | Comprehensive Assessment and Restructure of the Air Traffic Services |
| CARTS | Common ARTS |
| CAST | Commercial Aviation Safety Team |
| CAT | Category |
| CATM | Collaborative Air Traffic Management |
| CBM | Component Business Model |
| CBP | Customs and Border Protection |
| CBRNE | Chemical, Biological, Radiological, Nuclear, and High-Yield Explosive |
| CCFP | Collaborative Convective Forecast Product |
| CCS | Central Communications System |
| CD | Common Digitizer |
| CDA | Continuous Descent Approach (preferred) |
| CDA | Continuous Descent Arrivals |
| CDM | Collaborative Decision-Making |
| CDR | Coded Departure Routes |
| CDTI | Cockpit Display of Traffic Information |
| CFR | Code of Federal Regulations |
| CIP | Capital Improvement Program |
| CIWS | Corridor Integrated Weather System |
| CLEEN | Continuous Low Energy, Emissions and Noise (Consortium) |
| CM | Capacity Management |
| CNS | Communication, Navigation and Surveillance |
| CO | Carbon Monoxide |
| CO2 | Carbon Dioxide |
| COI | Communities of Interest |
| ConOps | Concept of Operations (JPDO) |
| CONUS | Continental United States |
| CONUSE | Concept of Use |
| COTR | Contracting Officer’s Technical Representative |
| CR | Continuing Resolution |
| CR | Cosmic Radiation |
| CRA | Conflict Resolution Advisory |
| CSC | Computer Sciences Corporation |
| CSCE | Certified Supply Chain Entity |
| CSPA | Closely Spaced Parallel Approach |
| CST | Commercial Space Transportation |
| CTA | Controlled Time of Arrival |
| CTAF | Common Traffic Advisory Frequency |
| CUTE | Common-Use Terminal Equipment |
| CWF | Convective Weather Forecast |
| CWP | Controller Workstation Processor |
| CWSU | Center Weather Service Unit |
D
| DARPA | Defense Advanced Research Projects Agency (DOD) |
| DASI | Digital Altimeter Setting Indicator |
| DataComm | Data Communications (NextGen) |
| DB | Database |
| dBHz | Decibels Relative to One Hertz |
| DBRITE | Digital Bright Radar Indicator Tower Equipment |
| DBS | Direct Broadcast Satellite |
| DC | Direct Current |
| DCVR | Digital Crystal Video Receiver |
| DGNSS | Differential Global Navigation Satellite System |
| DGPS | Differential GPS |
| DGT | Digital GPS Translator (Interstate Electronics) |
| DH | Decision Height |
| DHS | Department of Homeland Security |
| DISA | Defense Information Systems Agency |
| DLSG | Data Link Steering Group |
| DME | Distance Measuring Equipment |
| DMEAN | Dynamic Management of the European Airspace Network (EUROCONTROL) |
| DMN | Data Multiplexing Network |
| DNA/STNA | Direction de la Navigation Aérienne/Service Technique de la Navigation Aérienne (France) |
| DOC | Department of Commerce |
| DOD | Department of Defense |
| DOJ | Department of Justice |
| DOT | Department of Transportation |
| DOTS | Dynamic Ocean Track System |
| DPU | Data Processing Unit |
| DSP | Defense Service Provider |
| DSP | Departure Spacing Program |
| DSR-R | Display System Replacement-Radar Position |
| DSS | Decision Support System |
| DST | Daylight Saving Time |
| DST | Decision Support Tool |
| DTRA | Defense Threat Reduction Agency |
| DUAT | Direct User Access Terminal |
| DVRS | Digital Voice Recording System |
| DVRSM | Domestic Reduced Vertical Separation Minimum |
| DVSR | Defense VFR |
E
| EA | Enterprise Architecture (JPDO) |
| EAA | Experimental Aircraft Association |
| EADS | European Aeronautic Defense and Space Company |
| EAED | Enterprise Architecture & Engineering Division (JPDO) |
| EARTS | En Route Automated Radar Tracking System |
| EBUS | Enhanced Back-up Surveillance |
| EC | Executive Committee (JPDO) |
| EC | European Commission |
| ECAC | European Civil Aviation Conference |
| ECC | European Communications Committee |
| ECCAIRS | European Co-ordination Centre for Aviation Incident Reporting Systems |
| ECEF | Earth-Centered, Earth-Fixed (orthogonal coordinate system) |
| ECG | En Route Communications Gateway |
| ECSS | European Cooperation for Space Standardization |
| EDA | Enterprise Data Architecture |
| EDA | European Defence Agency |
| EDCT | Estimated Departure Clearance Time |
| EDT | Eastern Daylight Time |
| EFIS | Electronic Flight Information System |
| EFSTS | Electronic Flight Strip Transfer System |
| EFVS | Enhanced Flight Vision System |
| EGNOS | European Geostationary Navigation Overlay Service |
| EIS | Environmental Impact Statement |
| ELT | Emergency Locator Transmitter |
| ELV | Expendable Launch Vehicle |
| EMAS | Engineered Material Arresting System |
| EMP | Electromagnetic Pulse |
| EMS | Environmental Management System |
| E-MSAW | En-Route Minimum Safe Altitude Warning |
| EMSS | Enhanced Mobile Satellite Services |
| EOC | End of Contract |
| EPA | Environmental Protection Agency |
| EPATS | European Personal Air Transportation System |
| ERAM | En Route Automation Modernization |
| ERASMUS | En Route Air Traffic Management Ultimate System (EU) |
| ERAU | Emory-Riddle Aeronautical University |
| ERIDS | En Route Information Display System |
| ESA | European Space Agency |
| ETA | Estimated Time of Arrival (or Expected Time of Arrival) |
| ETMS | Enhanced Traffic Management System |
| EU | European Union |
| EUR | Euro |
| EUROCAE | European Organisation for Civil Aviation Equipment |
| EUROCONTROL | European Organisation for the Safety of Air Navigation |
| Eurofix | A system used in Europe for position location (Loran-C and GPS) |
| EVCS | Emergency Voice Communications System |
| EVFR | Electronic Visual Flight Rules |
| EVO | Equivalent Visual Operations |
| Exhibit 300 | Exhibit 300: Capital Asset Plan and Business Case Summary |
F
| F&E | Facilities and Equipment |
| FAA | Federal Aviation Administration |
| FAATC | FAA Technical Center |
| FAMS | Federal Air Marshal Service |
| FANS | Future Air Navigation System |
| FAQ | Frequently Asked Questions |
| FAR | Federal Aviation Regulation |
| FASTI | First Air Traffic Control Support Tools Implementation (EUROCONTROL) |
| FCA | Flow Constrained Area |
| FCAPS | Fault, Configuration, Accounting, Performance, Security |
| FCM | Flow Contingency Management |
| FCT | FAA Contract Tower |
| FCU | Flight Control Unit |
| FDE | Fault Detection and Exclusion (or Fault Detection and Elimination) |
| FDEP | Flight Data Entry and Printout |
| FDIO | Flight Data Input/Output |
| FDM | Flight Data Monitoring |
| FDMS | Flight Data Management Systems |
| FDP | Flight Data Processing |
| FDP2000 | Flight Data Processing 2000 (Oceanic) |
| FDPS | Flight Data Processing System |
| FEA | Flow Evaluation Area |
| FEMA | Federal Emergency Management Agency (DHS) |
| FICAN | Federal Interagency Committee on Aviation Noise |
| FIDS | Flight Information Display System |
| FIFO | First-In-First-Out |
| FIFPS | Flight Inspection Flight Program System |
| FIND | FAA Internet National Directory |
| FIOO | Flight Inspections Operations Office |
| FIP | Forecast Icing Potential |
| FIR | Flight Information Region |
| FIRPS | Flight Inspection Reporting Procedures System (FAA) |
| FIS | Flight Information system |
| FISDL | Flight Information Service-Data Link |
| FITS | FAA-Industry Training Standards |
| FL | Flight Level |
| FLAIR | FAA Library for Aviation Information Research |
| FMA | Final Monitor Aid (TRACON) |
| FMS | Flight Management System |
| FOC | Flight Operations Center |
| FOIA | Freedom of Information Act |
| FOIPS | Flight Object Interoperability Proposed Standard (EUROCONTROL) |
| FOMS | Flight Operations Management System (AVN) |
| FOQA | Flight Operational Quality Assurance |
| FOSA | Flight Operations Safety Assessment |
| FOSL | Flight Operations Simulation Laboratory (FAA) |
| FPS | Fixed Position Surveillance (USAF radar) |
| FRZ | Flight Restricted Zone |
| FSAS | Flight Service Automation System |
| FSDPS | Flight Service Data Processing System (M1FC) |
| FSM | Flight Schedule Monitor |
| FSS | Flight Service Station |
| FST | Fuel Storage Tank |
| FTI | FAA Telecommunications Infrastructure |
| FTO | Flight Test Operations |
| FTR | Federal Travel Regulations |
| FTS | Flight Tracking Service |
| FUA | Flexible Use of Airspace |
| FY | Fiscal Year |
G
| G/ATOR | Ground/Air Task Oriented Radar |
| GA | General Aviation |
| GA CDR | General Aviation Coded Departure Routes |
| GA JSC | General Aviation Joint Steering Committee |
| GAAP | General Aviation Airport Program |
| GADAHRS | GPS/Air Data/Attitude and Heading Reference System |
| GAMA | General Aviation Manufacturers Association |
| GAO | Government Accountability Office |
| GARA | General Aviation Revitalization Act |
| GAT | Global Air Traffic (Europe) |
| GATI | Global Air Traffic Interoperability |
| GATM | Global Air Traffic Management |
| GB | Gigabytes |
| GBAS | Ground-based Augmentation System |
| GBNA | Ground-based Navigation Aid |
| GCA | Government Contracting Authority |
| GCA | Ground Control Approach |
| GCAM | Ground Collision Avoidance Module |
| GCAS | Ground Collision Avoidance System |
| GCNSS | Global Communications, Navigation, and Surveillance System |
| GCS | Ground Control System |
| GDP | Gross Domestic Product |
| GDP | Ground Delay Program |
| GEO | Geostationary Earth Orbit |
| GES | Ground Earth Station |
| GGF | GBAS Ground Facility |
| GHG | Greenhouse Gas |
| GHz | Giga Hertz (10 ^ 9 Hz) |
| GIAC | GPS Interagency Advisory Council |
| GIB | GPS Integrity Broadcast |
| GIC | GPS Integrity Channel |
| GIG | Global Information Grid (DOD) |
| GIM | Geospatial Information Management |
| GIS | Geographic Information System |
| GIS | Geospatial Information Services |
| GLS | GPS Landing System |
| GMS | GPS-based Monitoring System |
| GMS | Ground Monitoring Station |
| GMT | Greenwich Mean Time |
| GN&C | Guidance, Navigation and Control |
| GNAS | General National Airspace System Sector |
| GND | Ground |
| GNI | Ground Network Interface |
| GNIU | Ground Network Interface Unit |
| GNLU | Global Navigation Landing Unit |
| GNSP | Government Navigation Service Provider |
| GNSS | Global Navigation Satellite System |
| GOM | Gulf of Mexico |
| GPN | Ground-based Radar Navigation Aid |
| GPS | NAVSTAR Global Positioning System (usually denoted as just Global Positioning System) |
| GPSW | Global Positioning Systems Wing (USAF) |
| GPtS | Global Positioning and Timing Service |
| GPWS | Ground Proximity Warning System |
| GPWxP | General Information Processing/Weather Processor |
| GRIB | Gridded Binary (a WMO data encoding scheme) |
| GS | Ground Stop |
| GS | Ground Surveillance |
| GS/AS | Ground Surveillance/Airborne Surveillance |
| GSE | Ground Support Equipment |
H
| H/W | Hardware |
| HAA | Height Above Airport (feet) |
| HAI | Helicopter Association International |
| HAP | Hazardous Air Pollutants |
| HF | High Frequency (3 to 30 MHz) |
| HF | Human Factors |
| HFDS | Human Factors Design Standard |
| HFE | Human Factors Engineering |
| HFRO | High Frequency Radio Operator |
| HIRL | High Intensity Runway Lights |
| HITS | Helicopter In-flight Tracking System (NASA AATT) |
| HLA | High Level Architecture |
| HL-LNA | High-Level Low-Noise Amplifier |
| HQ | Headquarters |
| HR | Human Resources |
| HRT | Hurricane Response Team |
| HSA | Homeland Security Act |
| HSW | Host Software (FAA Host Computer System) |
| HTAWS | Helicopter TAWS (Terrain Awareness and Warning System) |
| HUD | Heads Up Display |
| HW | Hardware |
| HWAS | Hazardous In-Flight Weather Advisory |
| Hz | Hertz |
I
| I/F | Interface |
| I/O | Input-Output |
| IA | Information Assurance |
| IA | Interoperability Assessment |
| IA | Investment Analysis |
| IAA | Integrated Airspace Alternative |
| IAD | Interoperability Analysis Document |
| IAN | Integrated Approach Navigation (Boeing) |
| IAP | Instrument Approach Procedure |
| IAPA | Instrument Approach Procedures Automation |
| IASA | International Aviation Safety Assessment (FAA Program) |
| IASL | Integrated Airborne Simulation Laboratory (Boeing) |
| IASS | Integrated Airport Security System |
| IATA | International Air Transport Association |
| IC | Integration Council (JPDO) |
| ICAO | International Civil Aviation Organization |
| ICD | Interface Control Document |
| ICD | Interoperability Compliance Document |
| ICG | International Committee on GNSS (UN) |
| ICNS | Integrated Communications, Navigation, and Surveillance |
| ICR | Integrated Collaborative Rerouting |
| ICSS | Integrated Communication Switching System (TRACON and ATCT) |
| IDP | Information Data Processing |
| IED | Improvised Explosive Device |
| IEEE | Institute of Electrical and Electronics Engineers |
| IFALPA | International Federation of Air Line Pilots' Associations |
| IFATCA | International Federation of Air Traffic Controllers' Associations |
| IFATS | Innovative Future Air Transport System (European Commission) |
| IFD | Integrated Flight Deck |
| IFDT | Interfacility Data Transfer |
| IFEAD | Institute for Enterprise Architecture Developments |
| IFFAS | International Financial Facility for Aviation Safety |
| IFIS | Integrated Flight Information System |
| IFP | Instrument Flight Procedures (IAPA) |
| IFPA | Instrument Flight Procedures Automation |
| IFPS | Integrated Flightplan Processing System (EUROCONTROL) |
| IFQA | Integrated Flight Quality Assurance |
| IFR | Instrument Flight Rules |
| IGNSS | International GNSS (IGNSS Society) |
| IGS | International GNSS Service |
| ILS | Instrument Landing System |
| ILS | Integrated Logistic Support |
| IM | Inner Marker (Instrument Landing System) |
| IMC | Institute Management Council |
| IMC | Instrument Meteorological Conditions |
| IMS | Information Management System |
| IND | Indicator |
| Info | Information Display (machine to human display that organizes information for decision support) |
| InFO | Information for Operators (FAA) |
| INFORMS | Institute for Operations Research and Management Sciences |
| INFOSEC | Information Security |
| INS | Inertial Navigation System |
| IO | Input-Output |
| IOC | Initial Operating Capability |
| IOE/AAA | Intranet Obstruction Evaluation/Airport Airspace Anal |
| ION | Institute of Navigation |
| IOP | Interoperability |
| IOSA | IATA Operational Safety Audit |
| IP | Intellectual Property |
| IP | Internet Protocol |
| IPA | Independent Pilots Association |
| IPA | Induced Positron Analysis |
| IPDS | Instrument Procedures Development System |
| IPF | Initiative Profile Form (FAA Flight Plan) |
| IPFD | Integrated Primary Flight Display |
| IPG | Integrated Process Group |
| IPH | Instrument Procedures Handbook (FAA) |
| IPIC | IP (Internet Protocol) Interconnect |
| IPP | Integrated Program Plan |
| IPR | Intellectual Property Rights |
| IPSec | Internet Protocol Security |
| IPT | Integrated Product Team (JPDO, FAA and OMB) |
| IPT | Integrated Protocol Team |
| IR | Infrared |
| IR&D | Independent Research and Development |
| IRB | Independent Review Board |
| IRB | Investment Review Board |
| IRM | Integrated Risk Management |
| ISD | In-Service Decision (FAA) |
| ISMS | Inflight Safety Monitoring System |
| ISMS | Integrated Security Management System |
| ISN | Information Support Network (EUROCONTROL) |
| ISN | Institute of Satellite Navigation (University of Leeds) |
| ISO | International Organization for Standardization (Iso is a word, derived from the Greek word isos, meaning same or equal.) |
| ISP | Internet Service Provider |
| ISS | Integrated Surveillance System |
| ITI | Information Technology Infrastructure |
| ITIL® | Information Technology Information Library |
| ITIM | Information Technology Investment Management |
| ITIPS | Information Technology Investment Portfolio System |
| ITWS | Integrated Terminal Weather System |
| ITWS-NFU | Integrated Terminal Weather System-National Filtering Unit |
| IUA | Instrument Unit Avionics (NASA) |
| IV&V | Independent Verification and Validation |
| IWP | Integrated Work Plan (JPDO) |
J
| JAA | Joint Aviation Authorities (Europe) |
| JAEB | Joint Architecture and Engineering Board (JPDO) |
| JATSG | Joint Air Traffic Steering Group |
| JET | Joint Environmental Toolkit (USAF) |
| JIMDAT | Joint Implementation Measurement Team |
| JPALS | Joint Precision Approach and Landing System |
| JPDO | Joint Planning and Development Office |
| JPEG | Joint Photographic Experts Groups (a file compression format commonly used for graphics) |
| JPO | Joint Program Office (USAF) |
| JRC | Joint Resources Council (FAA) |
| JTI | Joint Technology Initiative (European Commission) |
| JU | Joint Undertaking |
K
| kHz | Kilohertz |
| km | Kilometer |
| kph | Kilometers per Hour |
| KSN | Knowledge Services Network |
| KTS | Knots |
L
| LAADR | Low-Altitude Arrival/Departure Routes |
| LAAS | Local Area Augmentation System |
| LAHSO | Land and Hold Short Operation |
| LAII | Legacy Accuracy Improvement Initiative (GPS) |
| LAN | Local Area Network |
| LAQ | Local Air Quality |
| LAS | Layered Adaptive Security |
| LEAP | Lead Everyone Away from the Past |
| LF | Low-Frequency (30 to 300 Hz) |
| LFM | Local Flow Management/profile descent |
| LINCS | Leased Interfacility NAS Communications System |
| LIRL | Low Intensity Runway Lights |
| LIS | Logistics Information System |
| LLWAS | Low Level Wind Shear Alert System |
| LLWAS-NE | Low Level Wind Shear Alert System-Network |
| LLWAS-RS | Low-Level Wind Shear Alert System-Relocation/Sustainment |
| LMI | Logistics Management Information |
| LNAV | Lateral Navigation |
| LNAV/VNAV | Lateral Navigation with Vertical Guidance |
| LORAN | Long Range Aid to Navigation |
| LOSA | Line-Oriented Safety Assessment |
| LPGBS | Lightning Protection, Grounding, Bonding, and Shielding |
| LPV | Localizer Performance w/ Vertical Guidance |
| LRR | Long Range Radar |
| LSS | Logistics Support Services |
| LSSC | Logistics Support Services Center |
| LSSF | Logistics Support Systems and Facilities |
| LVP | Low Visibility Procedures |
| LVSO | Low Visibility Surface Operations |
| LVTO | Low Visibility Take-Off |
M
| m | Meter (SI unit of length) |
| m | Milli |
| M&S | Modeling & Simulation |
| M2M | Machine to Machine |
| MANPADS | Man-Portable Air Defense System |
| MAU | Modular Avionics Unit |
| MAV | Micro Air Vehicle |
| MB | Microburst |
| MBASE | Model Based (System) Architecting and Software Engineering |
| MBO | Military Based Operation (Base Ops) |
| MDA | Minimum Descent Altitude |
| MDCRS | Meteorological Data Collection and Reporting System |
| METAR | Meteorological Aviation Routine Weather Report |
| MFD | Multifunction Display |
| MFD | Multipurpose Flight Display |
| MFDU | Multifunction Display Unit |
| MHz | Megahertz (10^3 Hz) |
| mHz | Millihertz (10 ^-3 Hz) |
| MIA | Minimum Instrument Altitude |
| MilACAS | Military Aircraft Collision Avoidance System |
| MIPT | Master Integrated Product Team (JPDO) |
| MIS | Minimum Interoperability Standard |
| MLS | Microwave Landing System |
| MMIR | Maintenance Malfunction Information Report |
| MO | Mobile Object |
| MOA | Military Operations Area |
| MoD | Ministry of Defense |
| MODE C | Altitude Reporting Mode of Secondary Radar |
| MODE S | Mode Select Beacon System |
| MOP | Measures of Performance |
| MOU | Memorandum of Understanding |
| MPAP | Multiple Parallel Approach Program |
| MPAR | Multifunction Phased-Array Radar |
| MPAR | Multipurpose Airport Radar |
| MPGPSTM | Multi-Purpose GPS Processing Software |
| MRP | Manufacturing Resources Planning |
| MRT | Multi-Radar Tracker |
| ms | Milliseconds |
| MSAW | Minimum Safe Altitude Warning |
| MWP | Meteorologist Weather Processor |
N
| NAA | National Aviation Authorities |
| NACG | National Aeronautical Charting Group (formerly NACO) |
| NACO | National Aeronautical Charting Office (FAA) |
| NAIA | NAS Architecture Impact Assessment |
| NAIL | NAS Aeronautical Information Language |
| NAILS | National Airspace Integrated Logistics Support |
| NAIMES | NAS Aeronautical Information Management Enterprise System |
| NAIMS | National Airspace Incident Monitoring System |
| NAOMS | National Aviation Operations Monitoring Service (NASA) |
| NAP | NGATS Automation Platform |
| NARA | National Aircraft Resale Association |
| NAS | National Airspace System |
| NASA | National Aeronautics and Space Administration |
| NASAO | National Association of State Aviation Officials |
| NASC | National Aerospace Safety Council |
| NASCD | NAS Common Database |
| NASE | National Airspace Systems Engineering (Group) |
| NASEA | NAS Enterprise Architecture |
| NASEAF | NAS Enterprise Architecture Framework |
| NASPAS | NAS Performance Analysis System |
| NASR | NAS Requirements |
| NASR | NAS Resource |
| NASRS | NAS Resources System |
| NASSA | National Aviation System Safety Assessment |
| NASSI | NAS Status Information |
| NATA | National Air Transportation Association |
| NATCA | National Air Traffic Controllers Association |
| NATS | NAS Assessment Tool Suite |
| NATS | National Air Transportation System and National Air Traffic Service |
| NAVAID | Navigational Aid |
| NAVMN | Navigation Monitor and Control |
| NAVSTAR | Navigation Signal Timing and Ranging (GPS) |
| NBAA | National Business Aviation Association |
| NCC | Network Control Center (same as NNCC) |
| NCDC | National Climatic Data Center |
| NCES | Net-Centric Enterprise Services (DOD) |
| NCID | Net-Centric Information Domain |
| NCO | Net-Centric Operations |
| NCWF | National Convective Weather Forecast |
| NDB | Non-Directional Beacon |
| NDDF | NAVAID Digital Data File |
| NDOT | NextGen Decision-Oriented Tool |
| NDOT-A | NDOT ATM |
| NDOT-F | NDOT Flight Community |
| NDP | NAS Defense Programs |
| NDSS | Network and Distributed System Security |
| NEI | Network Enabled Information |
| NEI | Network Enabled Infrastructure |
| NEO | Network Enabled Operations |
| NEPA | National Environmental Policy Act |
| NESDIS | National Environmental Satellite, Data, and Information Service |
| NetBIOS | Network Basic Input/Output System |
| NEW | Network Enabled Weather |
| NEWG | Navigation Evolution Working Group (FAA) |
| NEWIS | Network Enabled Weather Information Sharing |
| NEXCOM | Next Generation Air/Ground Communications |
| NEXRAD | Next Generation Weather Radar |
| NextGen | Next Generation Air Transportation System |
| NFDC | National Flight Data Center (NACO) |
| NFDD | National Flight Data Digest |
| NG | Next Generation |
| NGATS | Next Generation Air Transportation System (now called NextGen) |
| NHTSA | National Highway Traffic Safety Administration |
| NIA | National Institute of Aerospace |
| NIAR | National Institute for Aviation Research |
| NIMS | NAS Infrastructure Management System |
| NIMS | National Incident Management System |
| NIS | NAS Implementation Support |
| NLDN | National Lightning Detection Network |
| nm | Nanometers (10 ^-9 m) |
| NM | Nautical Mile |
| NNCC | National Network Control Center |
| NNEW | NextGen Network-Enabled Weather |
| NOAA | National Oceanic and Atmospheric Administration |
| NOCAR | North Atlantic Operational Concepts and Requirements |
| NORAD | North American Aerospace Defense Command |
| NOTAM | Notice to Airmen |
| NOX | Nitrogen Oxide |
| NP | Network Processor |
| NPA | Non-Precision Approach |
| NPIAS | National Plan of Integrated Airport Systems |
| NRP | North American Route Program |
| ns | Nanosecond |
| NSAS | National Strategy for Aviation Security |
| NSC | National Security Council |
| NSF | National Science Foundation |
| NSSL | National Severe Storms Laboratory (NOAA) |
| NTML | National Traffic Management Log |
| NTSB | National Transportation Safety Board |
| NTSB AAD | NTSB Aviation Accident Database |
| NVS | NAS Voice Switch |
| NWS | National Weather Service |
| NWS WS | NWS Workstation |
| NWSTG | NWS Telecommunications Gateway |
| NWxP | NextGen Weather Processor |
O
| OA | Operational Architecture |
| OAG | Official Airline Guide |
| OASIS | Operational and Supportability Implementation |
| OBC | On-Board Computer |
| ODAPS | Oceanic Display and Processing Station |
| OEDS | Operational Error/Deviation System |
| OE-IFR | Obstacle Evaluation-Instrument Flight Rules (IAPA) |
| OEP | Operational Evolution Partnership (FAA 2006+) |
| OEP | Operational Evolution Plan (FAA pre 2006) |
| OEP 35 | The 35 airports in the FAA Operational Evolution Partnership (2006+) |
| OFI | Opportunities for Improvement |
| OFW | Oblique Flying Wing |
| OI | Operational Improvement |
| OIR | Operational Improvements Roadmap |
| OIRM | Operational Improvement Roadmap (NGATS) |
| OIS | Operational Information System (TFM) |
| OIS | Optical Identification Sensors |
| OMB | Office of Management and Budget |
| OPSNET | Air Traffic Operations Network (FAA) |
| ORD | Operational Readiness Demonstration |
| OSA | Open Standards Architecture |
| OSHA | Occupational Safety and Health Administration |
| OSS | Operational Support System |
| OSTP | Office of Science and Technology Policy |
| OTM | Oceanic 4D Trajectory Management |
| OTS | Out of Service |
P
| P3M | Portfolio/Program Performance Metrics |
| PA | Precision Approach Procedure |
| PANS | Procedures for Air Navigation Services (ICAO) |
| PANS-ATM | PANS – Air Traffic Management |
| PANS-OPS | PANS – Aircraft Operations (ICAO DOC 8168) |
| PANS-RAC | PANS – Rules of the Air and Air Traffic Services |
| PAPI | Precision Approach Path Indicator |
| PAR | Precision Approach Radar |
| PART | Program Assessment Rating Tool (OMB) |
| PASAS | Predictive Airborne Separation Assurance System |
| PATA | Personal Air Transportation Alliance |
| PATCO | Professional Air Traffic Controllers Organization |
| PAV | Personal Air Vehicle |
| PAZ | Protected Airspace Zone |
| PB NAS | Performance-based NAS |
| PBN | Performance-based Navigation |
| PCB | Printed Circuit Board |
| PDARS | Performance Data Analysis and Reporting System |
| PDS | Pilot Deviation System |
| PFM | Passenger Flow Management |
| PIN | Personal Identification Number |
| PIP | Pre-Implementation Plan |
| PIREP | Pilot Weather Report |
| PIRG | Planning and Implementation Regional Group |
| PJs | Personal Jets |
| PM | Performance Measurement |
| PM | Program Management |
| PMO | Program Management Office |
| PNT | Positioning, Navigation and Timing |
| POC | Point of Contact |
| POFZ | Precision Obstacle-Free Zone |
| PPP | Public/Private Partnership |
| PPPM | Portfolio/Program Performance Metrics |
| PVFR | Precision Visual Flight Rules |
Q
| QA | Quality Assurance |
| QAT | Quiet Aircraft Technology |
| QoS | Quality of Service |
R
| R&D | Research and Development |
| RA/TS | Route Analyzer/Trajectory Synthesizer |
| RAA | Regional Airlines Association |
| RADS | Radar Automated Display System |
| RAIL | Runway Alignment Indictor Lights |
| RAIM | Receiver Autonomous Integrity Monitoring |
| RAPPI | Random Access Plan Position Indicator |
| RAPT | Regional Airspace Procedures Team |
| RATCF | Radar Air Traffic Control Facility |
| RC | Regulatory Council (JPDO) |
| RCAG | Remote Center Air-to-Ground (facility) |
| RCAG | Remote Communications Air-Ground |
| RCE | Radio Control Equipment |
| RCP | Required Communications Performance |
| RDP | Radar Data Processing |
| RDSIM | Runway Delay Simulation Model |
| REDAC | Research, Engineering and Development Advisory Committee (FAA) |
| REIL | Runway End Identification Lights |
| RF | Radio Frequency |
| RFID | Radio Frequency Identification |
| RL/REL | Runway Lights/Runway Edge Lights |
| RM | Remote Monitor |
| RM | Risk Management |
| RMT | Route Management Tool |
| RNAV | Area Navigation (originally random navigation) |
| RNAV-Pro | Radar Navigation Pro (simulator) |
| RNP | Required Navigation Performance |
| RNSS | Radio Navigation Satellite Service |
| ROB | Rules of Behavior |
| ROD | Record of Decision |
| ROV | Recoverable Orbital Vehicle |
| RPG | Radar Product Generator (TDWR) |
| RPZ | Runway Protection Zone |
| RSP | Required Surveillance Performance |
| RSP | Required System Performance |
| RSS | Radar Support System (TSC and FAA) |
| RT | Radar Tracking |
| RT | Real-Time |
| RTA | Radar Transfer Accept |
| RTCA | Radio Technical Commission for Aeronautics |
| RTD | Required Time of Departure |
| RTR | Remote Transmitter/Receiver |
| RTSP | Required Total System Performance |
| RTSS | Remote Terminal Security Screening |
| RVP | Remote Vision Performance |
| RVR | Runway Visual Range |
| RVSM | Reduced Vertical Separation Minimum |
| RW | Runway |
| RWCLL | Runway Centerline Lights |
| RWI | Reduce Weather Impact |
| RWP | Required Weather Performance |
S
| SA | Situational Awareness |
| SA | System Administrator |
| SAA | Special Activity Airspace |
| SALS | Short Approach Lighting System |
| SAMS | Special Use Airspace Management System |
| SAN | System Area Network |
| SAPM | Satellite-based ATM accuracy Performance Model (Rockwell Corp.) |
| SARPS | Standards and Recommended Practices (ICAO) |
| SAS | Situational Awareness for Safety |
| SASP | Separation and Airspace Safety Panel (ICAO) |
| SATMS | Space and Air Traffic Management System |
| SATNAV | Satellite Navigation |
| SATS | Small Aircraft Transportation System |
| SATVOICE | Satellite Voice Communication |
| SBAS | Satellite-based Augmentation System |
| SBS | Surveillance and Broadcast Services |
| SD | Situation Display (ITWS) |
| SDAT | Sector Design Analysis Tool |
| SDPS | Surveillance Data Processing System |
| SDRS | Service Difficulty Reporting System |
| SE | Safety Enhancements |
| SE | System Engineering |
| SEA | SWIM-Enabled Application |
| SES | Single European Sky |
| SESAR | Single European Sky Air Traffic Management Research |
| SHF | Super High Frequency (3 to 30 GHz) |
| SI | International System of Units |
| SIDA | Security Identification Display Area |
| SIGMET | Significant Meteorological Information |
| SIP | System Implementation Program |
| SIRO | Simultaneous Intersecting Runway Operations |
| SM | Separation Management |
| SMA | Surface Movement Advisor |
| SMART | Safety Management Automation and Resource Toolkit (FAA AVS) |
| SME | Subject Matter Expert |
| SMF | Safety Management Framework |
| SMP | System Monitor Processor |
| SMR | Surface Movement Radar |
| SMS | Safety Management System |
| SMS | Surface Management System |
| SOA | Services Oriented Architecture |
| SOBA | Service Oriented Business Application |
| SOP | Standard Operating Procedures |
| SOX | Oxides of Sulfur |
| SPA | Seaplane Pilots Association |
| SPC | Senior Policy Committee (JPDO) |
| SPECI | Special Aviation Weather Report (special METAR) |
| SPOT | Screening of Passengers by Observation Techniques |
| SPP | Screening Partnership Program (TSA) |
| SPP | Security Policy Protocol |
| SQA | Software Quality Assurance |
| SRA | Security Restricted Airspace |
| SRM | Safety Risk Management |
| SRMD | Safety Risk Management Document |
| SRMDM | Safety Risk Management Decision Memorandum |
| SRS | Same Runway Separation |
| SSA | Shared Situational Awareness |
| SSCE | Secure Supply Chain Entity |
| SSEP | Self Separation |
| SSH | System Safety Handbook (FAA) |
| SSMP | System Safety Management Plan |
| SSMP | System Safety Management Program |
| SSP | Security Service Provider |
| STA | Scheduled Time of Arrival |
| STARS | Standard Terminal Automation Replacement System |
| STEADES | Safety Trend Evaluation and Data Exchange System |
| STEM | Science, Technology, Engineering and Mathematics |
| SUA | Special Use Airspace |
| SUV | Special Use Vehicle |
| SVT | Staffed Virtual Tower |
| SWAP | Severe Weather Avoidance Plan |
| SWIM | System-Wide Information Management |
T
| TAA | Technologically Advanced Aircraft |
| TAA | Terminal Arrival Area |
| TAAS | Terminal Advanced Automation System |
| TACAN | Tactical Air Navigation System |
| TADDS | Terminal ATM (Air Traffic Management) Data Distribution System |
| TAER | Terminal Arrival Efficiency Rate |
| TAF | Terminal Aerodrome Forecast |
| TAF | Terminal Area Forecast |
| TAMDAR | Tropospheric Airborne Meteorological Data Reporting |
| TAMR | Terminal Automation Modernization Replacement |
| TAN | Terminal Area Network |
| TAP | Tailored Arrival Procedure |
| TARDIS | Terminal Automated Radar Display and Information System |
| TARGETS | Terminal Area Route Generation, Evaluation & Traffic Simulation |
| TAS | Traffic Advisory System |
| TBA | To Be Announced |
| TBD | To Be Determined |
| TBM | Time-based Management |
| TBO | Trajectory-based Operations |
| TCAS | Traffic Alert And Collision Avoidance System |
| TCP | Terminal Controller Position (STARS) |
| TCS | Tower Communications System (ATCI) |
| TCW | Terminal Controller Workstation (STARS) |
| TCWP | Terminal Convective Weather Processor |
| TDOA | Time Difference of Arrival |
| TDU | Terminal Display Unit |
| TDW | Tower Display Workstation |
| TDWR | Terminal Doppler Weather Radar |
| TDZE | (Runway) Touchdown Zone Elevation |
| TDZL | Touchdown Zone Lights |
| TEC | Total Electron Count |
| TERP | Terminal Instrument Procedure |
| TFM | Traffic Flow Management |
| TFM-M | Traffic Flow Management-Modernization |
| TFMS | Traffic Flow Management System |
| TFR | Temporary Flight Restriction |
| TIPH | Taxi-Into-Position-and-Hold |
| TIS | Time-In-Service |
| TIS | Traffic Information System |
| TLS | Tactical Landing System |
| TM | Traffic Management |
| TM | Trajectory Management |
| TMA | Terminal Maneuvering Area |
| TMA | Terminal Movement Area |
| TMA | Traffic Management Advisor (now called CTAS-En Route) |
| TMD | Traffic Monitor (or Management) Display (DOTS) |
| TMI | Traffic Management Initiative |
| TMU | Traffic Management Unit |
| TOA | Time of Arrival |
| TOR | Terms of Reference |
| TOR | Time of Reception (ADS-B) |
| TRA | Temporary Restricted Area (Europe) |
| TRACON | Terminal Radar Approach Control |
| TRL | Technical Readiness Level |
| TSA | Transportation Security Administration |
| TSD | Traffic Situation Display |
| TSE | Total System Error |
| TSM | Tactical Separation Management |
| TSO | Telecommunication Services Office (FAA) |
| TSPI | Time Space Position Information |
| TVS | Terminal Voice Switch |
| TWIP | Terminal Weather Information For Pilots |
| TWR | Tower Control |
U
| UA | Unmanned Aircraft |
| UAS | Uniform Accounting System |
| UAS | Unmanned Aircraft System |
| UAT | Universal Access Transceiver (978 MHz) |
| UAVs | Unmanned Aerial Vehicles |
| UCAS | Unmanned Aerial Collision Avoidance System |
| UCAV | Unmanned Combat Air Vehicle |
| UEET | Ultra-Efficient Engine Technology |
| UGV | Unmanned Ground Vehicle |
| UHAA | Universal High Altitude Airspace |
| UHC | Unburned Hydrocarbon |
| UHF | Ultra High Frequency (300 to 3,000 MHz) |
| UHF/VHF | Ultra High & Very High Frequency Air-to-Ground (A/G) |
| UNI | User-Network Interface |
| UNICOM | Universal Communications Used at Uncontrolled Airports |
| UNIX | Uniplexed Information and Computing System |
| USNS | United States NOTAM Service |
| USSPACECOM | United States Space Command |
| UTC | Coordinated Universal Time |
V
| V/STOL | Vertical and Short Takeoff and Landing |
| VASI | Visual Approach Slope Indicator |
| VASIP | Voluntary Aviation Safety Information Program |
| VF | Voice Frequency (30 to 300 Hz) |
| VFR | Visual Flight Rules |
| VHF | Very High Frequency (30 to 300 MHz) |
| VLF | Very Low Frequency (3 to 30 kHz) |
| VLJ | Very Light Jet |
| VMC | Visual Meteorological Condition |
| VNAV | Vertical Navigation |
| V-NAV | Visual Navigation (Visual Landing Aids) |
| VNTSC | Volpe National Transportation System Center |
| VOD | Voice Over Data |
| VOR | VHF Omnidirectional Range |
| VOR/DME | VHF Omnidirectional Range/Distance Measuring Equipment |
| VORTAC | VOR and TACAN Facility |
| VPDS | Vehicle/Pedestrian Deviation System |
| VRS | Virtual Reference Station |
| VS | Visibility Sensor |
| VSI | Vision Systems International |
| VT | Virtual Tower |
| VTOL | Vertical Take-Off and Landing |
W
| WAAS | Wide Area Augmentation System |
| WARP | Weather and Radar Processor |
| WG | Working Group (JPDO) |
| WiBro | Wireless Broadband |
| WINS | Weather Information Network Server (WARP) |
| WISP | Wireless Internet Service Provider |
| WJHTC | William J. Hughes Technical Center (FAA) |
| WLAN | Wireless Local Area Network |
| WME | Wind Measurement Equipment |
| WMO | World Meteorological Organization |
| WMSCR | Weather Message Switching Center Replacement |
| WSDDM | Weather Support for Deicing Decision Making |
| WSI | Weather Services International (vendor) |
| WSP | Weather System Processor |
| WSR-88 | Weather Surveillance Radar (NEXRAD) |
| Wx | Weather |
X
| XML | Extensible Markup Language |
| XMT | Transmitter |
Y
Z