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Try this: http://www.acronymfinder.com/		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 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 + Back to Top B BDM Block Data Message BITE Built-In-Test-Equipment BRIMS Behavior Representation in Modeling and Simulation BTS Bureau of Transportation Statistic + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top J JPDO Joint Planning and Development Office + Back to Top K KDP Key Decision Point + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top 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 + Back to Top 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