| A |
| AA |
Associate Administrator |
| AAC |
Advanced Airspace Concept |
| AACS |
Advanced Airspace Computer System |
| AAF |
Associate Administrator for Airway Facilities |
| AAR |
Airport Acceptance Rate |
| AAS |
Advanced Automation System |
| AATT |
Advanced Air Transportation Technologies Project |
| AC or A/C |
Aircraft |
| ACARS |
Aircraft Communications Addressing and Reporting System |
| ACCC |
Area Control Computer Complex |
| ACES |
Airspace Concept Evaluation System |
| ACF |
Area Control Facility |
| AC/HR |
Aircraft Per Hour |
| ACID |
Aircraft ID or Aircraft Identification |
| ACLT |
Actual Calcualted Landing Time |
| A/D |
Arrival/Departure |
| ADIZ |
Air Defense Identification Zone |
| ADPE |
Automated Data Processing Equipment |
| ADS |
Automatic Dependent Surveillance |
| ADS-B |
Automatic Dependent Surveillance - Broadcast |
| ADU |
ARTS Data Unit |
| ADUI or ADU-I |
ARTS Data Unit Interface |
| ADUS or ADU-S |
ARTS Data Unit Software |
| AERA |
Automated En Route ATC |
| AF |
Airways Facilities |
| AFB |
Air Force Base |
| AGARD |
Advisory Group for Aerospace Research and Development |
| AIAA |
American Institute of Aeronautics and Astronautics |
| AID |
Aircraft Identifier or Aircraft Identification |
| AIM |
Aeronautical Information Manual |
| AMCC |
ARTCC Monitor and Control Center |
| AMDAR |
Aircraft Meteorological Data Relay |
| AN |
Data Analysis Software of CTAS |
| AOC |
Airline Operations Control |
| AOS |
Airspace Operations Systems |
| AOS |
FAA Operational Support Service |
| APP |
Approved |
| ARC |
Ames Research Center |
| ARD |
FAA Research and Development |
| ARINC |
Aeronautical Radio Inc. |
| ARSR |
Air Route Surveillance Radar |
| ARTCC |
Air Route Traffic Control Center |
| ARTS |
Automated Radar Terminal System |
| AS |
Airspace Systems Program |
| ASD |
Aircraft Situational Display |
| ASDI |
Aircraft Situation Display to Industry |
| ASEB |
Aeronautics and Space Engineering Board |
| ASP |
Arrival Sequencing Program |
| ASPM |
Aviation System Performance Metrics |
| ASR |
Airport Surveillance Radar |
| AT |
Air Traffic |
| ATC |
Air Traffic Control |
| ATAC |
Aerospace Technology Advisory Committee |
| ATCA |
Air Traffic Control Association, Inc. |
| ATCSCC |
Air Traffic Control System Command Center |
| ATCT |
Air Traffic Control Tower |
| ATL |
Atlanta Hartsfield International Airport |
| ATM |
Air Traffic Management |
| ATN |
Aeronautical Telecommunications Network |
| ATO |
Air Traffic Operations |
| ATS |
Air Transportation System |
| ATR |
Acceptance Test Review |
| ATR |
Air Traffic Plans and Requirements Service |
| ATR |
Air Traffic Requirements |
| ATSP |
Air Traffic Service Provider |
| AVA |
Adaptation Validation and Analysis |
| AVOSS |
Aircraft Vortex Spacing System |
| AVP |
Approximate Vertical Profile |
| AvSP |
Aviation Safety Program |
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| B |
| BDM |
Block Data Message |
| BITE |
Built-In-Test-Equipment |
| BRIMS |
Behavior Representation in Modeling and Simulation |
| BTS |
Bureau of Transportation Statistic |
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| C |
| C3I |
Command, Control, Communication, and Information |
| CAA |
Civil Aviation Authorities |
| CAASD |
Center for Advanced Aviaiton System Development (MITRE Corporation) |
| CAP |
Collaborative Arrival Planning |
| CAS |
Calibrated Air Speed |
| CCB |
Configuration Control Board |
| CCD |
Configuration Control Directive |
| CCFP |
Collaborative Convective Weather Forecast Product |
| CDDC |
Centralized Decision-making Distributed Control |
| CDLS |
Contractor Depot Logistics Support |
| CDR |
Continuous Data Recording |
| CDR |
Critical Design Review |
| CDRL |
Contract Data Requirements List |
| CDTI |
Cockpit Display of Traffic Information |
| CHI |
Computer Human Interface |
| CI |
Configuration Item |
| CI |
Communication Interface |
| CICT |
Computing, Information, and Communication Technologies |
| CIWS |
Corridor Integrated Weather System |
| CM |
Communications Manager |
| CM |
Communication Interface |
| CMF |
Configuration Management Facility |
| CMLS |
Contractor Maintenance and Logistics Support |
| CMO |
Configuration Management Organization |
| CNS |
Communication, Navigation, and Surveillance |
| CONOPS |
Concept of Operations |
| COTS |
Commercial Off-the-Shelf |
| CPE |
CTAS Processing Equipment |
| CPFS |
Computer Program Functional Specification |
| CPM |
Cognitive, Perceptual, and Motor |
| CPU |
Central Processing Unit |
| CR |
Crossing Restrictions |
| CRISD |
Computer Resources Integrated Support Document |
| CSC |
Computer Sciences Corporation |
| CSC |
Computer Software Component |
| CSCD |
CTAS Software Change Document |
| CSCI |
Computer Software Configuration Item |
| CSCR |
CTAS Software Change Request |
| CSMA/CD |
Carrier Sense Multiple Access with Collision Detection |
| CSOM |
Computer Systems Operators Manual |
| CSU |
Computer Software Unit |
| CTA |
Controlled Time of Arrival |
| CTAS |
Center/TRACON Automation System |
| CTOC |
Centralized Terminal Operation Control |
| CTRB |
CTAS Technical Review Board |
| CTS |
Coded Time Source |
| CVR |
Cockpit Voice Recorder |
| CVR |
Controlled Visual Rules |
| CVSRF |
Crew Vehicle Systems Research Facility |
| CW |
Continuous Wave |
| CWT |
Code Walk-Through |
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| D |
| DA |
Descent Advisor |
| DAC |
Dynamic Airspace Configuration |
| DACS |
Digital Aeronautical Chart Supplement |
| DAG |
Distributed Air/Ground |
| DAG-TM |
Distributed Air/Ground Traffic Management |
| DAN |
Data Analysis |
| DCN |
Document Change Notice |
| DEWIZ |
Distant Early Warning Identification Zone |
| DFW |
Dallas/Fort Worth International Airport |
| DID |
Data Item Description |
| DM |
Data Manager |
| DME |
Distance Measuring Equipment |
| DOD |
Department of Defense |
| DOF |
Degree of Freedom |
| DOT |
Department of Transportation |
| DP |
Dynamic Planner |
| DPA |
Delegation of Procurement Authority |
| DQT |
Design Qualification Test |
| DR&A |
Data Reduction and Analysis |
| DRL |
Data Requirements List |
| DRP |
Data Record/Playback |
| DRR |
Deployment Readiness Review |
| DSP |
Departure Sequencing Program |
| DSR |
Display System Replacement |
| DST |
Decision Support Tool |
| DSU |
Data Servicing Unit |
| DSUM |
Data Summary (Software) |
| DT&E |
Development Test and Evaluation |
| DYSIM |
Dynamic Simulator |
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| E |
| EDR |
Eddy Dissipation Rate |
| EDP |
Expedite Departure Path |
| EMC |
Electromagnetic Compatibility |
| EMI |
Electromagnetic Interference |
| EPR |
Engine-Pressure Ratio |
| ESP |
En Route Spacing Program |
| ETA |
Estimated Time of Arrival |
| ETD |
Estimated Time of Departure |
| ETG |
Enhanced Target Generator |
| ETL |
Environmental Technology Laboratory |
| ETMS |
Enhanced Traffic Management System |
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| F |
| FAA |
Federal Aviation Administration |
| FAALC |
FAA Logistics Center |
| FAATC |
FAA Technical Center |
| FACET |
Future ATM Concepts Evaluation Tool |
| FAF |
Final Approach Fix |
| FAR |
Federal Acquisition Regulation |
| FAR |
Field Action Request |
| FARGO |
Flight-Deck Automation for Reliable Ground Operation |
| FAST |
Final Approach Spacing Tool |
| FASTE |
Future Aeronautical Subnetwork Traffic Emulator |
| FAT |
Factory Acceptance Test |
| FCA |
Functional Configuration Audit |
| FCC |
Federal Communications Commission |
| FCFS |
First Come First Served (scheduling method) |
| FD |
Flight Deck |
| FDAD |
Full Digital ARTS Display |
| FDB |
Full Data Block |
| FDS |
Flight Data Set |
| FE |
Field Evaluation |
| FFC |
FutureFlight Central |
| FFRDC |
Federally-Funded Research and Development Center |
| FII |
Frequency Domain Interferometer Imaging |
| FIL |
FAST Information List |
| FMCW |
Frequency Modulated Continuous Wave |
| FMS |
Flight Management System |
| FOA |
Full Operational Assessment |
| FOC |
Full Operating Capability |
| FP |
Flight Plan |
| FPS |
Flight Progress Strip |
| FSD |
Full Scale Development |
| FY |
Fiscal Year |
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| G |
| GAR |
Gate Acceptance Rate |
| GFE |
Government Furnished Equipment |
| GFI |
Government Furnished Information |
| GFP |
Government Furnished Property |
| GMT |
Greenwich Mean Time (Zulu) |
| GOMS |
Goal, Operators, Methods, and Selection |
| GO-SAFE |
Ground-Operation Situation Awareness and Flow Efficiency |
| GPS |
Global Positioning System |
| GRC |
Glenn Research Center |
| GUI |
Graphical User Interface |
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| H |
| HCS |
Host Computer System |
| HID |
Host Interface Device |
| HID-I |
Host Interface Device Interface |
| HID-S |
Host Interface Device Software |
| HLA |
High Level Architecture |
| HQ |
Headquarters |
| HW |
Hardware |
| HWCI |
Hardware Configuration Item |
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| I |
| IAD |
Dulles International Airport |
| ICD |
Interface Control Document |
| I/CO |
Installation and Check Out |
| ID |
Identification |
| IDD |
Interface Design Document |
| IDL |
Interactive Data Language |
| IDR |
Incremental Design Review |
| IEEE |
Institute of Electrical and Electronics Engineers, Inc. |
| IFR |
Instrument Flight Rules |
| IIR |
Independent Implementation Review |
| ILS |
Instrument Landing System |
| ILS |
Integrated Logistics Support |
| ILSP |
Integrated Logistics Support Plan |
| IMC |
Instrument Meterological Conditions |
| INM |
Integrated Noise Model |
| I/O |
Input/Output |
| IOP |
Input Output Processor |
| IPC |
Inter Process Communication |
| IRD |
Interface Requirements Document |
| IRS |
Interface Requirements Specification |
| ISP |
Integrated Support Plan |
| ISSS |
Initial Sector Suite System |
| ITWS |
Integrated Terminal Weather Service |
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| J |
| JPDO |
Joint Planning and Development Office |
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| K |
| KDP |
Key Decision Point |
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| L |
| LAN |
Local Area Network |
| LaRC |
Langley Research Center |
| LDA |
Localizer Directional Aid |
| LIDAR |
Light Detection and Ranging |
| LLWAS |
Low Level Wind Shear Alert System |
| LNAV |
Lateral Navigation |
| LOA |
Limited Operational Assessment |
| LOA |
Letter of Agreement |
| LRI |
Line Replaceable Item |
| LRU |
Line Replaceable Unit |
| LRU |
Lowest Replaceable Unit |
| LSA |
Logistics Support Analysis |
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| M |
| MACH |
MACH number (speed ratio to speed of sound) |
| MAPR |
Multiple Antenna Profiler Radar |
| MAPS |
Meteorological and Aeronautical Presentation System |
| MAR |
Major Acquisition Review |
| MDCRS |
Meteorological Data Collection and Reporting System |
| MEANS |
MIT Extensible Air Network Simulation |
| MF |
Meter Fix |
| MFAR |
Meter Fix Acceptance Rate |
| MFT |
Meter Fix Time or Meter Fix Crossing Time |
| MIDAS |
Man-Machine Integration Design and Analysis System |
| MIL |
Military |
| MIT |
Miles-in-Trail |
| MIT-LL |
Massachusetts Institute of Technology - Lincoln Laboratory |
| MLDT |
Mean Logistics Delay Time |
| MMC |
Maintenance Monitor Console |
| MOA |
Memorandum of Agreement |
| MOU |
Memorandum of Understanding |
| MRD |
Maintenance Requirements Document |
| MS |
Milestone |
| MSL |
Maximum Stress Load |
| MSL |
Mean Sea Level |
| MTBF |
Mean-Time-Between-Failure |
| MTTR |
Mean-Time-to-Restore or Mean-Time-to-Repair |
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| N |
| NAILS |
National Airspace Integrated Logistics Support |
| NAILSMT |
NAILS Management Team |
| NAPRS |
National Airspace Performance Reporting System |
| NAR |
Non-Advocate Review |
| NAS |
National Airspace System |
| NASA |
National Aeronautics and Space Administration |
| NAVAID |
Navigational Aid |
| NCAR |
National Center for Atmospheric Research |
| NCP |
NAS Change Proposal |
| NDB |
Non-Directional Beacon |
| NDI |
Non-developmental Item |
| NextGen |
Next Generation |
| NFD |
Network Flow Diagram |
| NFDC |
National Flight Data Center |
| NGATS |
Next Generation Air Transportation System |
| NIMA |
NCARR Improved Moments Algorithm |
| NIRS |
Noise Integrated Routing System |
| NIU-I |
Network Interface Unit Interface |
| NIU-S |
Network Interface Unit Software |
| NM |
Nautical Miles |
| NMAC |
Near Midair Collision |
| NMI |
Nautical Miles |
| NOAA |
National Oceanic and Atmospheric Administration |
| NOWCAST |
Short-Term Weather Forecast, also called Short-Term Forecast |
| NRA |
NASA Research Announcement |
| NRT |
Non-Real-Time |
| NTIA |
National Telecommunications and Information Administration |
| NTSC |
Volpe National Transportation System Center |
| NTX |
North Texas Research Station for CTAS |
| NWIS |
NAS-Wide Information System |
| NWS |
National Weather System |
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| O |
| OAT |
Office of Aerospace Technology |
| ODAPS |
Oceanic Display and Planning System |
| ODP |
Object-oriented Dynamic Planner |
| OE |
Operating Environment |
| OEP |
Operational Evolution Plan |
| OETA |
Original Estimated Time of Arrival |
| OFT |
Outer Fix Time |
| OFX |
Outer Fix |
| OJT |
On-the-Job Training |
| OMB |
Office of Management and Budget |
| OMT |
Object Modeling Technique |
| OO |
Object-Oriented |
| OpsCon |
Operational Concept |
| OpsNet |
Operations Network |
| ORD |
Operational Readiness Demonstration |
| ORD |
Operational Requirements Document |
| OT&E |
Operational Test and Evaluation |
| OT&E/I |
OT&E/Integration |
| OT&E/O |
OT&E/Operational |
| OT&E/S |
OT&E/Shakedown |
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| P |
| PADS |
Planned Arrival and Departure System |
| PAMRI |
Peripheral Adapter Module Replacement Item |
| PAR |
Preferred Arrival Route |
| PAS |
Pseudo Aircraft System |
| PAT |
Prototype Adaptation Toolkit |
| PAT&E |
Production Acceptance Test and Evaluation |
| PBS |
Performance Based Services |
| PCA |
Physical Configuration Audit |
| PCA |
Positive Controlled Airspace |
| PDD |
Program Design Document |
| PDR |
Preliminary Design Review |
| PE |
PAMRI Emulator |
| PE-I |
PAMRI Emulator Interface |
| PE-S |
PAMRI Emulator Software |
| PFA |
Project Formulation Agreement |
| PFS |
Profile Selector |
| PGUI |
Planview Graphical User Interface |
| PHS&T |
Packaging, Handling, Storage, and Transportation |
| PIP |
|
| PM |
Program Manager |
| PMC |
Program Management Council |
| PMP |
Parts, Material, and Process |
| PR |
Problem Report |
| PR |
Procurement Request |
| PRR |
Program Readiness Review |
| PSR |
Program Status Review |
| PTP |
Point-to-Point |
| PTR |
Problem Trouble Report |
| PTR |
Program Technical Report |
| PVD |
Plan View Display (Radar Display) |
| PVMD |
Parallel Virtual Machine Daemon |
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| Q |
| QA |
Quality Assurance |
| QCPP |
Quality Control Program Plan |
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| R |
| RA |
Route Analysis |
| RAID |
Redundant Array of Inexpensive Disks |
| RAMS |
Reorganized ATC Mathematical Simulator |
| RAR |
Runway Acceptance Rate |
| RASS |
Radio Acoustic Sounding System |
| R&D |
Research and Development |
| RFP |
Request for Proposal |
| RIACS |
Research Institution for Advanced Computer Science |
| RIM |
Range Imaging |
| RLV |
Reusable Launch Vehicle |
| RMA |
Reliability-Maintainability-Availability |
| RMMS |
Remote Maintenance Monitoring System |
| RMS |
Remote Monitoring System |
| RMS |
Root Mean Square |
| RNP |
Required Navigation Performance |
| RT |
Real-Time |
| RTCA |
formerly Radio Technical Committee on Aeronautics, now RTCA, Inc. |
| RTI |
Run Time Infrastructure |
| RTM |
Requirements Traceability Matrix |
| RUC |
Rapid Update Cycle |
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| S |
| SA |
Separation Assurance |
| SAA |
Space Act Agreement |
| SADRASS |
Spaced Antenna Drift Radio Acoustic Sounding System |
| SAR |
Search and Rescue |
| SAR |
Systems Analysis Recording |
| SAT |
Site Acceptance Test |
| SATS |
Small Aircraft Technology System |
| SBIR |
Small Business Innovative Research |
| SC |
Stream Class |
| SCSI |
Small Computer System Interface |
| SD |
Situation Display |
| SD |
Software Development |
| SDD |
Software Design Document |
| SDO |
Super-Density Operations |
| SDP |
Software Development Plan |
| SDT |
System Design Team or Systems Development Team |
| SE |
System Engineer |
| SEI |
System Engineering and Integration |
| SFO |
San Francisco International Airport |
| SHCT |
Short Haul Civil Tiltrotor |
| SID |
Standard Instrument Departure |
| SIMMOD |
Simulation Model |
| SISO |
Simulation Interoperability Standards Organization |
| SLDAST |
System-Level Design, Analysis, and Simulation Tools |
| SLS |
System Level Specification |
| SM |
System Manager |
| SM |
Sequence Monitor |
| SMC |
System Maintenance Console |
| SMC |
System Manager Console |
| SMMC |
System Maintenance Monitoring Console |
| SMO |
System Management Office |
| SMS |
Surface Management System |
| SMS |
System Management Station |
| SNMP |
Simple Network Management Protocol |
| SOAR |
Surface Operation Automation Research |
| SOW |
Statement or Work |
| SPM |
Software Programmers Manual |
| SR |
Software Review |
| SRS |
Software Requirements Specification |
| SSC |
Super Stream Class |
| SSDD |
System/Segment Design Document |
| SSPM |
Software Standards and Procedures Manual |
| STA |
Scheduled Time of Arrival |
| STAR |
Standard Terminal Arrival Route |
| STARS |
Standalone TRACON Automation Replacement System |
| STARS |
Standard Terminal Automation Replacement System |
| STD |
Scheduled Time of Departure |
| STD |
Standard |
| SUM |
Software Users Manual |
| SW |
Software |
| SWAP |
Severe Weather Avoidance Program |
| SWIM |
System-Wide Information Management |
| SWO |
System-Wide Optimization |
| SYSCO |
System-Supported Coordination |
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| T |
| TAAM |
Total Airspace and Airport Modeler |
| TAC |
Technical Assistance Contractor |
| TACAN |
Tactical Air Navigation |
| TACEC |
Terminal Area Capacity-Enhancing Concept |
| TAR |
TRACON Acceptance Rate |
| TARDIS |
Time and Relative Dimensions in Space |
| TARS |
Tethered Aerostat Radar System |
| TATCA |
Terminal Air Traffic Control Association |
| TBD |
To Be Determined |
| TCAS |
Traffic-alert and Collision Avoidance System |
| TCL |
Tool Command Language |
| TCP/IP |
Transmission Control Protocol/Internet Protocol |
| TDWR |
Terminal Doppler Weather Radar |
| T&E |
Test and Evaluation |
| TEMP |
Test and Evaluation Master Plan |
| TEP |
Turbulent Eddy Processor |
| TFAS |
Traffic Flow Automation System |
| TFM |
Traffic Flow Management |
| TGUI |
Timeline Graphical User Interface |
| TIM |
Technical Interchange Meeting |
| Tk |
Toolkit |
| TKE |
Turbulent Kinetic Energy |
| TMA |
Traffic Management Advisor |
| TMC |
Traffic Management Coordinator |
| TMI |
Traffic Management Systems Interface |
| TMS |
Traffic Management Station |
| TMS |
Traffic Management System |
| TMU |
Traffic Management Unit |
| TOC |
Top-of-Climb |
| TOD |
Top-of-Descent |
| TPL |
Total Path Length |
| TPSU |
Trajectory Prediction Synthesis and Uncertainty |
| TRACON |
Terminal Radar Approach Control |
| TRR |
Test Readiness Review |
| TS |
Trajectory Synthesis |
| TSAFE |
Tactical Separation Assisted Flight Environment |
| TSR |
Test Status Review |
| TTMA |
Terminal Traffic Management Advisor |
| TTMC |
TRACON Traffic Management Coordinator |
| TWI |
Two-Way Interface |
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| U |
| UAV |
Unmanned Aerial Vehicle |
| UCT |
Universal Coordinated Time |
| UEET |
Ultra-Efficient Engineering Technology |
| UHF |
Ultra High Frequency |
| UPR |
User Preferred Routing |
| UPS |
Uninterruptible Power Supply |
| USN |
United States Navy |
| UTC |
Universal Time Code (Zulu) |
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| V |
| VASE |
Virtual Airspace Simulation Environment |
| VAST |
Virtual Airspace Simulation Technologies |
| VDD |
Version Description Document |
| VFR |
Visual Flight Rules |
| VHF |
Very High Frequency |
| VMC |
Visual Meteorological Conditions |
| VNAV |
Vertical Navigation |
| VOR |
VHF Omnidirectional Ranges |
| VRTM |
Verification Requirements Traceability Matrix |
| V&V |
Verification and Validation |
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| W |
| WakeVAS |
Wake Vortex Advisory System |
| WAN |
Wide Area Network |
| WX |
Weather Systems Interface |
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| X |
| XM |
Execution Manager |
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| Z |
| ZDV |
Denver ARTCC |
| ZFW |
Fort Worth ARTCC |
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