Joint Planning and Development Office

JPDO Acronyms
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.

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/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

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&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

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

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&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/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/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/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)

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

kHz	Kilohertz
km	Kilometer
kph	Kilometers per Hour
KSN	Knowledge Services Network
KTS	Knots

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	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

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
NO_X	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

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

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

QA	Quality Assurance
QAT	Quiet Aircraft Technology
QoS	Quality of Service

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

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

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

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/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

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

XML	Extensible Markup Language
XMT	Transmitter

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