DBA? MWP? SMT? Not a problem. Find out what these mean to get familiar with the different abbreviated names for various operations, lines of business, and programs.

A&E
Architecture and Engineering
A/C
Aircraft
A/G
Air to Ground
A/H
Altitude/Height
AAA
Airport Airspace Analysis
AAC
Mike Monroney Aeronautical Center
AADC
Airport Average Daily Capacity
AAF
Airway Facilities Service
AAF
Army Air Field
AAF-1
Director of Airway Facilities
AAI
Arrival Aircraft Interval
AAI
FAA Office of Accident Investigation
AAL
Alaska Region
AAM
Office of Aerospace Medicine
AAMS
Aircraft Arrival Management System
AAP
Advanced Automation Program
AAR
After Action Review
AAR
Airport Acceptance Rate
AAR
Airport and Aircraft Safety Research and Development
AAS
Advanced Automation System
AASR
Aging Aircraft Safety Rule
AAT
Associate Administrator for Air Traffic
ABA
FAA Office of Financial Services
ABA
Office of Budget
ABDIS
Automated Data Interchange System Service
AC
Advisory Circular
ACAA
Air Carrier Association of America
ACAIS
Air Carrier Activity Information System
ACAS
Aircraft Collision Avoidance System
ACC
Airports Consultants Council
ACC
Area Control Center
ACCT
Accounting Records
ACD
Automatic Call Distributor
ACDO
Air Carrier District Office
ACE
Central Region
ACEP
Airport Capacity Enhancement Plan
ACF
Area Control Facility
ACFO
Aircraft Certification Field Office
ACFT
Aircraft
ACI-NA
Airports Council International-North America
ACID
Aircraft Identification
ACIP
Airport Capital Improvement Plan
ACIP
Automated Conformity Inspection Process
ACLS
Automatic Carrier Landing System
ACLT
Actual Landing Time Calculated
ACO
Aircraft Certification Office
ACO
Associate Contracting Officer
ACO
Office of Airports Compliance and Field Operations
ACR
FAA Office of Civil Rights
ACRP
Airport Cooperative Research Program
ACSEP
Aircraft Certification Systems Evaluation Program
ACT
William J. Hughes Technical Center
AD
Airworthiness Directive
ADA
Air Defense Area
ADAP
Airport Development Aid Program
ADAS
Automated Weather Observing System Data Acquisition System
ADAS
AWOS Data Acquisition System
ADC
Air Defense Command
ADCCP
Advanced Data Communications Control Procedure
ADDA
Administrative Data
ADDS
Aviation Digital Data Service
ADF
Automatic Direction Finding
ADI
Automatic De-Ice and Inhibitor
ADIC
ATS Interfacility Data Communications
ADIN
AUTODIN Service
ADIZ
Air Defense Identification Zone
ADL
Aeronautical Data Link
ADLO
Air Defense Liaison Office
ADLY
Arrival Delay
ADM
Aeronautical Decision Making
ADO
Airline Dispatch Office
ADO
Airport District Office
ADP
Automated Data Processing
ADS
Automated Distribution System
ADS
Automatic Dependent Surveillance
ADS-B
Automatic Dependent Surveillance-Broadcast
ADSIM
Airfield Delay Simulation Model
ADSY
Administrative Equipment Systems
ADTN
Administrative Data Transmission Network
ADTN2000
Administrative Data Transmission Network 2000
ADVO
Administrative Voice
AEA
Eastern Region
AED
Automated External Defibrillator
AEDT
Aviation Environmental Design Tool
AEE
FAA Office of Environment and Energy
AEEC
Airlines Electronic Engineering Committee
AEG
Aircraft Evaluation Group
AEP
FAA Office of Aviation Policy Planning and Environment
AERA
Automated En-Route Air Traffic Control
AEX
Automated Execution
AF
Air Force
AF
Airway Facilities
AFB
Air Force Base
AFDSS
Air Fix Data Sub Set
AFER
Aircraft Fuel Expense Reconciliation System
AFIS
Automated Flight Inspection System
AFMS
Automatic Flight Management System
AFMT
Airway Facilities Management Team
AFO
Airport Field Office
AFP
Airspace Flow Program
AFP
Area Flight Plan
AFRES
Air Force Reserve Station
AFS
Airways Facilities Sector
AFS
Flight Standards Service
AFSFO
AFS Field Office
AFSFU
AFS Field Unit
AFSOU
AFS Field Office Unit (Standard is AFSFOU)
AFSS
Automated Flight Service Station
AFTIL
Airway Facilities Tower Integration Laboratory
AFTN
Automated Fixed Telecommunications Network
AFZ
Resource Management
AGC
FAA Office of the Chief Counsel
AGHME
Aircraft Geometric Height Measurement Element
AGI
FAA Office of Government and Industry Affairs
AGL
Above Ground Level
AGL
Alliance Great Lakes Region
AHR
FAA Office of Human Resources
AICS
Aircraft Inventory and Charter System
AID
Airport Information Desk
AIFSS
Automated International Flight Service
AIG
Airbus Industries Group
AILS
Automatic Instrument Landing System
AIM
Aeronautical Information Manual
AIM
Airman's Information Manual
AIP
Aeronautical Information Publication
AIP
Airport Improvement Plan
AIP
Airport Improvement Program
AIPA
Aeronautical Information Production Application
AIR
Aircraft Certification Service
AIRMET
Airmen's Meteorological Information
AIRNAV
Airports and Navigation Aids Database System
AIRNET
Airport Network Simulation Model
AIRPAC
Advisor for the Intelligent Resolution of Predicted Aircraft
AIS
Aeronautical Information Service
AIS
Aeronautical Information System
AIS
FAA Office of Information Systems Security
AIS
Aeronautical Information System
AIT
Automated Information Transfer
AITS
Automated Inventory Tracking System
AJA
Acquisition & Business Services, Air Traffic Organization
AJC
Communications Services, Air Traffic Organization
AJE
En Route & Oceanic Service, Air Traffic Organization
AJF
Finance Services, Air Traffic Organization
AJO
Chief Operating Officer, Air Traffic Organization
AJP
Operations Planning Services, Air Traffic Organization
AJR
System Operations Services, Air Traffic Organization
AJS
Safety Services, Air Traffic Organization
AJT
Terminal Service, Air Traffic Organization
AJW
Technical Operation Services, Air Traffic Organization
ALO
Aviation Logistics Organization
ALP
Airport Layout Plan
ALPA
Airlines Pilots Association
ALS
Approach Lighting System
ALSF
Approach Lighting System With Sequenced Flashing Lights
ALSF1
ALS with Sequenced Flashers I
ALSF2
ALS with Sequenced Flashers II
ALSIP
Approach Lighting System Improvement Plan
ALTRV
Altitude Reservation
AMASS
Airport Movement Area Safety System
AMC
Mike Monroney Aeronautical Center
AMCC
ACF/ARTCC Maintenance Control Center
AMCC
Air Route Traffic Control Center Maintenance Control Center
AMIC
Area Manager in Charge
AMIS
Aircraft Management Information System
AMOC
Alternative Methods of Compliance
AMOS
Automated Meteorological Observation Station
AMP
ARINC Message Processor (OR) Airport Master Plan
AMS
Acquisition Management System
AMT
Aviation Maintenance Technician
AMVER
Automated Mutual Assistance Vessel Rescue System
ANC
Alternate Network Connectivity
ANCA
Airport Noise and Capacity Act
AND
Associate Administrator for NAS Development
ANE
New England Region
ANG
Air National Guard
ANGB
Air National Guard Base
ANM
Northwest Mountain Region
ANMS
Automated Network Monitoring System
ANS
NAS Transition and Integration Directorate
ANS
NAS Transitions and Implementation
ANSI
American National Standards Institute
AO
Authorizing Official
AOA
Air Operations Area
AOA
FAA Office of the Administrator
AOAS
Advanced Oceanic Automation System
AOC
Airline Operational Control Center
AOC
FAA Office of Communications
AOCC
Atlantic Operations Control Center
AODR
Authorizing Official Designated Representative
AOP
NAS Operations
AOPA
Aircraft Owners and Pilots Association
AOS
Operational Support Service
AOV
Air Traffic Safety Oversight Service
AP
Acquisition Plan
APB
Acquisition Program Baselines
API
FAA Office of International Aviation
APM
Approach Path Monitor
APP
Approach
APS
Airport Planning Standard
APTS
Automated Personnel Tracking System
APTS
AVN (Aviation Systems Standards) Process Tracking System
AQAFO
Aeronautical Quality Assurance Field Office
AQS
FAA Office of Quality, Integration and Executive Services
ARA
Research and Acquisition
ARAC
Army Radar Approach Control (AAF)
ARAC
Aviation Rulemaking Advisory Committee
ARC
Administrator's Review Committee
ARC
Airlines Reporting Corporation
ARC
Aviation Review Committee
ARC
FAA Office of Regions and Center Operations
ARCTR
FAA Aeronautical Center or Academy
AREA
Automated En Route Air Traffic Control
ARF
Airport Reservation Function
ARFF
Aircraft Rescue and Fire Fighting
ARINC
Aeronautical Radio Incorporated
ARINC
Aeronautical Radio, Inc.
ARLNO
Airline Office
ARM
FAA Office of Rulemaking
ARO
Airport Reservation Office
ARP
Airport Reference Point
ARP
FAA Airports Organization
ARP
FAA Office of Airports
ARS
Air Traffic Requirements Service
ARS
Airport Surveillance Radar
ARS
Automated Reproduction System
ARSA
Airport Service Radar Area
ARSR
Air Route Surveillance Radar
ARSR
Long Range Surveillance Radar
ARTCC
Air Route Traffic Control Center
ARTS
Automated Radar Terminal System
ASAP
Aviation Safety Action Program
ASAS
Aviation Safety Analysis System
ASC
AUTODIN Switching Center
ASCP
Aviation System Capacity Plan
ASD
Aircraft Situation Display
ASDA
Accelerate Stop Distance Available
ASDE
Area Surveillance Detection Equipment - (Radar)
ASDE-X
Airport Surface Detection Equipment
ASH
FAA Office of Security & Hazardous Materials
ASI
Aviation Safety Inspector
ASIAS
Aviation Safety Information Analysis and Sharing
ASLAR
Aircraft Surge Launch And Recovery
ASM
Available Seat Mile
ASO
Southern Region
ASOS
Automated Surface Observing System
ASOS
Automated Surface Observing Systems
ASP
Arrival Sequencing Program
ASPM
Aviation System Performance Metrics
ASPM
Aviation System Performance Metrics
ASQP
Airline Service Quality Performance
ASR
Airport Surveillance Radar
ASR
Airways Facilities Spectrum Policy and Management
ASR
Alkali Silica Reactivity
ASR
Terminal Surveillance Radar
ASR-WSP
Airport Surveillance Radar-Weather System Processor
AST
FAA Office of Commercial Space Transportation
ASTA
Airport Surface Traffic Automation
ASV
Airline Schedule Vendor
ASW
Southwest Region
ASYNC
Asynchronous Concentrator
AT
Air Traffic
AT&T
American Telephone and Telegraph
AT&T
ASDC AT&T Agency Service Delivery Center
AT&T
CSA AT&T Customer Support Associate
ATA
Air Transport Association of America
ATA
Airline Transport Association
ATAS
Airspace and Traffic Advisory Service
ATC
Air Traffic Control
ATCA
Air Traffic Control Association
ATCAA
Air Traffic Control Assigned Airspace
ATCAA
ATC Assigned Airspace
ATCBI
Maintenance of Air Traffic Control Beacon Indicator
ATCCC
Air Traffic Control Command Center
ATCO
Air Taxi Commercial Operator
ATCOTS
Air Traffic Control Optimum Training Solutions
ATCRB
Air Traffic Control Radar Beacon
ATCRBS
Air Traffic Control Radar Beacon System
ATCS
Air Traffic Control Specialist
ATCSCC
Air Traffic Control Systems Command Center
ATCT
Airport Traffic Control Tower
ATIDS
Airport Surface Target Identification System
ATIS
Automated Terminal Information Service
ATIS
Automatic Terminal Information Service
ATIS
Automatic Terminal Information Service
ATISR
ATIS Recorder
ATM
Air Traffic Management
ATM
Air Traffic Manager
ATM
Asynchronous Transfer Mode
ATMAC
Air Traffic Management Advisory Committee
ATMS
Advanced Traffic Management System
ATMS
Automated Training Management System
ATN
Aeronautical Telecommunications Network
ATO
Air Traffic Organization
ATODN
AUTODIN Terminal (FUS)
ATOMS
Air Traffic Operations Management System
ATOP
Advanced Technologies and Oceanic Procedures
ATOS
Air Transportation Oversight System
ATOVN
AUOTVON (Facility)
ATR
Air Traffic Requirements
ATREP
Air Traffic Representative
ATS
Air Traffic Services
ATSAP
Air Traffic Safety Action Program
ATSCCP
ATS Contingency Command Post
ATSS
Airway Transportation Systems Specialist
ATTIS
AT&T Information Systems
AUTODIN
DoD Automatic Digital Network
AUTOVON
DoD Automatic Voice Network
AVN
Aviation Standards National Field Office, Oklahoma City
AVN
Aviation System Standards
AVON
AUTOVON Service
AVS
FAA Office of Aviation Safety
AVSI
Aerospace Vehicle Systems Institute
AWIS
Airport Weather Information
AWOS
Automated Weather Observing System
AWP
Aviation Weather Processor
AWP
Western Pacific Region
AWPG
Aviation Weather Products Generator
AWS
Air Weather Station
AWSS
Automated Weather Sensors System
AWTT
Aviation Weather Technology Transfer
AXX
One of the 9 Regional Offices
BA
Budget Analyst
BAD
Budget Analysis Database
BANS
BRITE Alphanumeric System
BART
Billing Analysis Reporting Tool (GSA software tool)
BASIC
Basic Contract Observing Station
BASOP
Military Base Operations
BCA
Benefit/Cost Analysis
BCR
Benefit/Cost Ratio
BDAT
Digitized Beacon Data
BERMS
Beacon Environmental Remote Monitoring Subsystem
BFO
Backfill Overtime
BFO
Blazing Flash of the Obvious (DOD)
BIM
Building Information Modeling
BIP
Backup Interface Processor
BMP
Best Management Practices
BOC
Bell Operating Company
BOD
Beneficial Occupancy Date
BPB
Business Plan Builder
BPS
Bits Per Second
BRI
Basic Rate Interface
BRITE
Bright Radar Indicator Terminal Equipment
BRITE
Bright Radar Indicator Tower Equipment
BRL
Building Restriction Line
BUEC
Back-up Emergency Communications
BUECE
Back-up Emergency Communications Equipment
C&A
Certification and Accreditation
C/S/S/N
Capacity/Safety/Security/Noise
CA
Conflict Alert
CAA
Civil Airworthiness Authority
CAA
Civil Aviation Authority
CAA
Clean Air Act
CAAFI
Commercial Aviation Alternative Fuels Initiative
CAASD
Center for Advanced Aviation System Development
CAB
Civil Aeronautics Board
CAD
Computer-aided Design
CAD
Computer-aided Drawing
CAD
Computer-aided Design
CAEG
Computer-aided Engineering Graphics
CAI
Contractor-Acceptance Inspection
CAIRS
Cable Assignment Information Retrieval System
CAMI
Civil Aerospace Medical Institute
CAP
Civil Air Patrol
CAR
Civil Aviation Regulations
CARAT
Center for Aviation Research and Aerospace Technology
CARF
Central Altitude Reservation Facility
CARF
Central Altitude Reservation Function
CARS
Civilian Air Routes System
CARSR
Common Air Route Surveillance Radar
CARTS
Common Automated Radar Terminal System
CAS
Cost Accounting System
CASA
Controller Automated Spacing Aid
CASFO
Civil Aviation Security Office
CASS
Continuing Analysis and Surveillance System
CASST
Commercial Aviation Safety Strategic Team
CAST
Certification Authority Software Team
CASTLE
Consolidated Automated System for Time and Labor Entry
CAT
Category
CAT
Clear Air Turbulence
CATTS
Computerized Air Traffic Training System
CATX
Categorical Exclusion
CAU
Crypto Ancillary Unit
CBI
Computer Based Instruction
CC
Construction Coordinator
CC&O
Customer Cost and Obligation
CCC
Communications Command Center
CCCC
Staff Communications
CCCH
Central Computer Complex Host
CCS7-NI
Communication Channel Signal-7 Network Interconnect
CCSD
Command Communications Service Designator
CCU
Central Control Unit
CD
Common Digitizer
CD
Compact Disc
CD-ROM
Compact Disc Read-Only Memory
CDA
Continuous Descent Arrival
CDB
Corporate Database
CDC
Computer Display Channel
CDD
Corporate Data Dictionary
CDL
Configuration Deviation List
CDM
Collaborative Decision Making
CDR
Cost Detail Report
CDRA
Cooperative Research and Development Agreement
CDS
Central Dispatch System
CDT
Controlled Departure Time
CDTI
Cockpit Display of Traffic Information
CDV
Compressed Digital Video
CED
Categorical Exclusion Determination
CENRAP
Center Radar Arts Presentation
CENTX
Central Telephone Exchange
CEP
Capacity Enhancement Program
CEQ
Council on Environmental Quality
CERAP
Center Radar Approach Control
CERAP
Central Radar Approach
CFC
Central Flow Control
CFCF
Central Flow Control Facility
CFCS
Central Flow Control Service
CFI
Certified Flight Instructor
CFIT
Controlled Flight Into Terrain
CFR
Code of Federal Regulations
CFWP
Central Flow Weather Processor
CFWU
Central Flow Weather Unit
CG
Center of Gravity
CGAS
Coast Guard Air Station
CHI
Computer Human Interface
CIO
Chief Information Officer
CIP
Capital Investment Plan
CISO
Chief Information Security Officer
CIWS
Corridor Integrated Weather System
CLC
Course Line Computer
CLEEN
Continuous Lower Energy, Emissions & Noise
CLIN
Contract Line Item
CLT
Calculated Landing Time
CM
Configuration Management
CMAP
Center Mapping Automation Program
CMFO
Certificate Management Field Office
CMIS
Certificate Management Information System
CMO
Certificate Management Office
CMU
Certificate Management Unit
CNMPS
Canadian Minimum Navigation Performance Specification Airspace
CNS
Communications, Navigation and Surveillance
CNS
Consolidated NOTAM System
CNSP
Consolidated NOTAM System Processor
CO
Central Office
CO
Contracting Officer
COE
Center of Excellence
COE
U.S. Army Corps of Engineers
COMCO
Command Communications Outlet
CONOPS
Concept of Operations
CONUS
Continental United States
COOP
Continuity of Operations Plan
CORP
Private Corporation other than ARINC or MITRE
COTR
Contracting Officer's Technical Representative
COTR
Contracting Officer's Technical Representative
COTS
Commercial Off-the-Shelf
CP
Conflict Probe
CPC
Certified Professional Controller
CPCS
Consolidated Production Control System
CPDLC
Controller Pilot Data Link Communications
CPE
Customer Premise Equipment
CPIC
Capital Planning and Investment Control
CPMIS
Consolidated Personnel Management Information System
CRA
Conflict Resolution Advisory
CRC
Coordinating Research Council
CRDA
Converging Runway Display Aid
CRDA
Cooperative Research & Development Agreement
CRM
Crew Resource Management
CRT
Cathode Ray Tube
CSA
Central Service Area
CSA
Communications Service Authorization
CSA
Comparative Safety Assessment
CSA
Central Service Area
CSAP
Combined Services Access Point
CSAP
Common Services Access Point
CSC
Central Service Center
CSC
Central Service Center
CSER
Contractor Site Engineering Report
CSIS
Centralized Storm Information System
CSMC
Cyber Security Management Center
CSO
Customer Service Office
CSR
Communications Service Request
CSS
Central Site System
CSTA
Chief Scientist and Technical Advisor
CSTWRK
Cost Work
CTA
Control Area
CTA
Controlled Time of Arrival
CTA/FIR
Control Area/Flight Information Region
CTAF
Common Traffic Advisory Frequency
CTAS
Center TRACON Automation System
CTMA
Center Traffic Management Advisor
CUPS
Consolidated Uniform Payroll System
CVFR
Controlled Visual Flight Rules
CVTS
Compressed Video Transmission Service
CW
Continuous Wave
CWO
Contract Weather Observer
CWP
Central Weather Processor
CWP
Corporate Work Plan
CWSU
Central Weather Service Unit
CWY
Clearway
D-ATIS
Digital - Automatic Terminal Information Service
DA
Decision Altitude/Decision Height
DA
Descent Advisor
DA
Direct Access
DA/H
Decision Altitude/Height
DABBS
DITCO Automated Bulletin Board System
DACS
Digital Aeronautical Chart Supplement
DADS
Digital Aeronautical Database System
DAFIS
Departmental Accounting and Financial Information System
DAIR
Direct Altitude and Identity Readout
DALR
Digital Audio Legal Recorder
DAR
Designated Agency Representative
DARC
Direct Access Radar Channel
DARP
Dynamic Aircraft Route Planning
DASI
Digital Altimeter Setting Indicator
DASR
Digital Airport Surveillance Radar
DB
Database
dB
Decibel
DBA
Database Administrator
dBA
Decibels A-Weighted
DBCRC
Defense Base Closure and Realignment Commission
DBE
Disadvantaged Business Enterprise
DBMS
Data Base Management System
DBRITE
Digital Bright Radar Indicator Tower Equipment
DCA
Defense Communications Agency
DCAA
Dual Call, Automatic Answer Device
DCC
Direct Channel Complex
DCCU
Data Communications Control Unit
DCE
Data Communications Equipment
DDA
Dedicated Digital Access
DDD
Direct Distance Dialing
DDM
Difference in Depth of Modulation
DDS
Digital Data Service
DEA
Drug Enforcement Agency
DEDS
Data Entry and Display System
DEIS
Draft Environmental Impact Statement
DEM
Digital Elevation Model
DEP
Departure
DEWIZ
Distance Early Warning Identification Zone
DF
Direction Finder
DFAX
Digital Facsimile
DFI
Direction Finding Indicator
DFL
Daily Flight Log
DFM
Departure Flow Management
DGNSS
Differential Global Navigation Satellite System
DGPS
Differential Global Positioning Satellite (System)
DGPS
Differential Global Positioning System
DH
Decision Height
DHS
Department of Homeland Security
DIA
Denver International Airport
DID
Direct Inward Dial
DIP
Drop and Insert Point
DIRF
Direction Finding
DISU
Drug Investigation Support Unit
DITCO
Defense Information Technology Contracting Office Agency
DLAP
Data Link Applications Processor
DLRS
Digital Legal Recording System
DME
Distance Measuring Equipment
DME/P
Precision Distance Measuring Equipment
DMN
Data Multiplexing Network
DMRS
Database Management Reporting System
DMS
Data Management System
DMS
Drawing Management System
DNL
Day-Night Equivalent Sound Level
DOD
Department of Defense
DOD
Direct Outward Dial
DOF
Digital Obstacle File
DOI
Department of Interior
DOS
Department of State
DOT
Department of Transportation
DOTCC
Department of Transportation Computer Center
DOTS
Dynamic Ocean Track System
DOTS
Dynamic Ocean Tracking System
DOVE
DSR Oceanic VSCS En Route Implementation Working Group
DP
Departure Procedures
DPE
Designated Pilot Examiner
DR
Disaster Recovery
DRP
Disaster Recovery Plan
DSCS
Digital Satellite Compression Service
DSG
Data Services Group
DSP
Departure Sequencing Program
DSR
Display System Replacement
DSS
Decision Support System
DSUA
Dynamic Special Use Airspace
DTED
Digital Terrain Elevation Data
DTM
Digital Terrain Model
DTS
Dedicated Transmission Service
DUAT
Direct User Access Terminal
DUATS
Direct User Access Terminal System
DVD
Digital Versatile Disk
DVFR
Day Visual Flight Rules
DVFR
Defense Visual Flight Rules
DVOF
Digital Vertical Obstruction File
DVOR
Doppler Very High Frequency Omni Directional Range
DVOR
Doppler Very High Frequency Omni-- Directional Range
DVRS
Digital Voice Recorder System
DYSIM
Dynamic Simulator
E-MSAW
En Route Automated Minimum Safe Altitude Warning
EA
Enterprise Architecture
EA
Environmental Assessment
EARS
En Route Analysis and Reporting System
EARTS
En Route Automated Radar Tracking System
EASA
European Aviation Safety Agency
EBC
Event Based Currency
EBUS
Enhanced Backup Surveillance
EC
Engineering Center
ECG
En Route Communications Gateway
ECOM
En Route Communications
eCPIC
Electronic Capital Planning Investment Control
ECVFP
Expanded Charted Visual Flight Procedures
EDC
Early Display Configuration
EDC
En Route Departure Capability
EDC
Enterprise Data Center
EDCT
Estimated Departure Control Time
EDCT
Expedite Departure Path
EDDA
Environmental Due Diligence Audit
EDI
Electronic Data Interchange
EDMS
Electronic Document Management Systems
EDMS
Emissions and Dispersion Modeling System
EDS
Enterprise Database System
EEO
Equal Employment Opportunity
EFAS
En Route Flight Advisory Service
EFB
Electronic Flight Bag
EFC
Expect Further Clearance
EFIS
Electronic Flight Information Systems
EFSTS
Electronic Flight Strip Transfer System
EIAF
Expanded Inward Access Features
EIS
Environmental Impact Statement
ELD
Electrical Load Database
eLMS
Electronic Learning Management System
ELT
Emergency Locator Transmitter
ELWRT
Electrowriter
EMAS
Engineered Materials Arresting System
EMPS
En Route Maintenance Processor System
EMS
Environmental Management System
ENAV
En Route Navigational Aids
EOF
Emergency Operating Facility
eOPF
Electronic Official Personnel File
EOSH
Environmental and Occupational Safety & Health
EOSH
Environmental Compliance Occupational Safety and Health
EPA
Environmental Protection Agency
EPI
Element Performance Inspection
EPS
Engineered Performance Standards
EPSS
Enhanced Packet Switched Service
ERAD
En Route Broadband Radar
ERAM
En Route Automation Modernization
ERIDS
En Route Information Display System
ERIT
Enhanced Radar Intelligent Tool
ERM
En Route Spacing Program
ERMS
Environmental Remote Monitoring System
ES&H
Environmental Safety and Health
ESA
Eastern Service Area
ESC
Eastern Service Center
ESC
Enterprise Service Center
ESC
Eastern Service Center
ESEC
En Route Broadband Secondary Radar
ESF
Extended Superframe Format
ESIS
Enhanced Status Information System
ESIS
Environmental Safety Information System
ESP
En Route Spacing Program
ESP
En Route Sequencing Program
ESRI
Environmental Systems Research Institute
ESYS
En Route Equipment Systems
ETA
Estimated Time of Arrival
ETE
Estimated Time En Route
ETG
Enhanced Target Generator
ETMS
Enhanced Traffic management Systems
ETN
Electronic Telecommunications Network
ETO
Engineering Technical Officer
ETVCT
En Route Training Voice Communication Tool
ETVS
Enhanced Terminal Voice Switch
EUROCAE
European Organization for Civil Aviation Equipment
EVAS
Enhanced Vortex Advisory System
EVCS
Emergency Voice Communications System
EVFR
Electronic Visual Flight Rules
EVM
Earned Value Management
F&E
Facilities and Equipment
FAA
Federal Aviation Administration
FAAAC
FAA Aeronautical Center
FAACIS
FAA Communications Information System
FAASTeam
FAA Safety Team
FAATC
FAA Technical Center
FAATC
Federal Aviation Administration Technical Center
FAATSAT
FAA Telecommunications Satellite
FAATSAT
Federal Aviation Administration Telecommunications Satellite
FAC
Facility
FACUTL
Facility Utilization System
FADE
FAA/Airline Data Exchange
FAF
Final Approach Fix
FAIRS
Federal Aircraft Management Information System
FAMIS
Federal Air Marshal Information System
FANS
Future Air Navigation System
FAP
Final Approach Point
FAPM
FTS2000 Associate Program Manager
FAQ
Frequently Asked Questions
FAR
Federal Aviation Regulation
FARM
Fielded Automation Requirements Management
FASC
FAA Aviation Safety Center
FAST
Final Approach Spacing Tool
FAX
Facsimile Equipment
FBO
Fixed Base Operator
FBS
Fall Back Switch
FCC
Federal Communications Commission
FCLT
Freeze Calculated Landing Time
FCM
Flight Schedule Monitor
FCOM
FSS Radio Voice Communications
FCPU
Facility Central Processing Unit
FCT
Federal Contract Tower
FDAT
Flight Data
FDAT
Flight Data Entry and Printout (FDEP) and Flight Data Service
FDE
Flight Data Entry
FDEP
Flight Data Entry and Printout
FDIO
Flight Data Input/Output
FDIOC
Flight Data Input/Output Center
FDIOR
Flight Data Input/Output Remote
FDM
Frequency Division Multiplexing
FDMSAW
Fully Digital Minimum Safe Altitude Warning
FDP
Flight Data Processing
FDP/RDP
Flight Data Processing/Radar Data Processing
FDR
Federal Data Registry
FDT
Flight Deck Training Program
FED
Federal
FEIS
Final Environmental Impact Statement
FEODP
Flight Edit and On-Demand Printing
FEP
Front End Processor
FERS
Facility and Equipment Reporting System
FFAC
From Facility
FFLA
Flexible Flight Level Assignment
FFRDC
Federal Funded Research & Development Center
FIAO
Flight Inspection Area Office
FICO
Flight Inspection Central Office
FIFO
Flight Inspection Field Office
FIG
Flight Inspection Group
FINO
Flight Inspection National Field Office
FIO
Flight Inspection Office
FIP
Facility Improvement Program
FIPS
Federal Information Publication Standard
FIR
Flight Information Region
FIRE
Fire Station
FIRMR
Federal Information Resource Management Regulation
FIRPS
Flight Inspection Reports Processing System
FIS
Flight Information Services
FISDL
Flight Information Services Data Link
FISMA
Federal Information Security Management Act of 2002
FISMA
Federal Information Security Management Act of 2002
FITS
FAA/Industry Training Standards
FL
Flight Level
FLDS
Flight Loads Data System
FLIP
Flight Information Publication
FLM
Front Line Manager
FLOWSIM
Traffic Flow Planning Simulation
FLSA
Fair Labor Standards Act
FLTCK
Flight Check
FMA
Final Monitor Aid
FMC
Frontline Managers Courses
FMF
Facility Master File
FMIS
FTS2000 Management Information System
FMO
Facility Management Office
FMP
Field Maintenance Party
FMS
Financial Management System
FMS
Flight Management System
FNMS
FTS2000 Network Management System
FOD
Foreign Object Damage
FOIA
Freedom of Information Act
FOMS
Flight Operations Management System
FONSI
Finding of No Significant Impact
FOQA
Flight Operations Quality Assurance
FOTS
Fiber Optics Transmission System
FOUO
For Official Use Only
FP
Flight Plan
FPI
Fluorescent Penetrate Inspection
FPL
Full Performance Level
FPO
Flight Procedures Office
FPPS
Federal Personnel Payroll System
FPS
Military Primary Radar
FRC
Request Full Route Clearance
FRD
Facility Reference Data
FRMS
Facility Roster Management System
FS
Flight Standards
FSAS
Flight Service Automation System
FSCAP
Flight Safety Critical Aircraft Parts
FSDO
Flight Standards District Office
FSDPS
Flight Service Data Processing System
FSEP
Facility, Service, and Equipment Profile
FSFO
Flight Standards Field Office
FSIAG
Flight Service Information Area Group
FSM
Flight Schedule Monitor
FSP
Flight Strip Printer
FSPD
Freeze Speed Parameter
FSRM
Facility Security Risk Management
FSS
Flight Service Station
FSSA
Flight Service Station Automated Service
FST
Fuel Storage Tanks
FSTS
Federal Secure Telephone Service
FSYS
Flight Service Station Equipment Systems
FTE
Full Time Equivalent
FTI
FAA Telecommunications Infrastructure
FTP
File Transfer Protocol
FTS
Federal Telecommunications System
FTS2000
Federal Telecommunications System 2000
FUS
Functional Units or Systems
FWCS
Flight Watch Control Station
FWS
FAA Weather Service
FY
Fiscal Year
GA
General Aviation
GAA
General Aviation Activity
GAAA
General Aviation Activity and Avionics
GADO
General Aviation District Office
GAO
Government Accountability Office
GAO
Government Accounting Office
GCA
Ground Control Approach
GDE
Ground Delay Enhancements
GDP
Ground Delay Program
GENOT
General Notice
GETS
Government Emergency Telecommunications Service
GETS
Grievance Electronic Tracking System
GFE
Government Furnished Equipment
GFM
Government Furnished Materials
GFP
Government Furnished Property
GIS
Geographic Information System
GLONASS
Global Orbiting Navigational Satellite System
GMCC
General National Airspace System Maintenance Control Center
GML
Geography Markup Language
GMS
Grants Management System
GNAS
General National Airspace System
GNSS
Global Navigation Satellite System
GOES
Geostationary Operational Environmental Satellite
GOESF
GOES Feed Point
GOEST
GOES Terminal Equipment
GOMP
Gulf of Mexico Program
GPO
Government Printing Office
GPRA
Government Performance and Results Act
GPS
Global Positioning Satellite
GPS
Global Positioning System
GPWS
Ground Proximity Warning System
GRADE
Graphical Airspace Design Environment
GS
Glide Slope
GS
Glide Slope Indicator
GSA
General Services Administration
GSE
Ground Support Equipment
GTM
General Terrain Model
GUI
Graphic User Interface
GWDS
Graphic Weather Display System
HAA
Height Above Airport
HAL
Height Above Landing
HARS
High Altitude Route System
HAT
Height Above Touchdown
HAZMAT
Hazardous Materials
HCAP
High Capacity Carriers
HCS
Host Computer System
HDME
NDB with Distance Measuring Equipment
HDQ
FAA Headquarters
HDR
Hardware Discrepancy Report
HELI
Heliport
HEMS
Helicopter Emergency Medical Service
HF
High Frequency
HI-EFAS
High Altitude EFAS
HID
Host Interface Display
HID/NAS/LAN
Host Interface Device/National Airspace System/Local Area Network
HIRL
High Intensity Runway Lights
HLDC
High Level Data Link Control
HMI
Hazardously Misleading Information
HOV
High Occupancy Vehicle
HQ
FAA Headquarters
HSI
Horizontal Situation Indicators
HSPD
Homeland Security Presidential Directive
HUD
Heads Up Display
HUD
Housing and Urban Development
HUMS
Health & Usage Monitoring Systems
HVAC
Heating, Ventilating, and Air Conditioning
HWAS
Hazardous In-Flight Weather Advisory
Hz
Hertz
I&I
Impact and Implementation
I/AFSS
International AFSS
IA
Indirect Access
IA
Information Assurance
IAF
Initial Approach Fix
IAP
Instrument Approach Procedures
IAPA
Instrument Approach Procedures Automation
IAR
Investment Analysis Report
IAS
Investment Analysis Staff
IAT
Investment Analysis Team
IATA
International Air Transport Association
IBM
International Business Machines
IBP
International Boundary Point
IBR
Intermediate Bit Rate
IC
Implementation Center
ICAO
International Civil Aviation Organization
iCMM
integrated Capability Maturity Model
ICMS
Integrated Control and Monitor System
ICSS
Integrated Communications Switching System
ICSS
International Communications Switching Systems
ID
Identification
IDAT
Interfacility Data
IDP
Individual Development Plan
IDS
Intrusion Detection System
IF
Intermediate Fix
IFB
Invitation For Bid
IFCP
Interfacility Communications Processor
IFDS
Interfacility Data System
IFEA
In-Flight Emergency Assistance
IFO
International Field Office
IFP
Instrument Flight Procedures
IFPA
Instrument Flight Procedures Automation Program
IFR
Instrument Flight Rules
IFSS
International Flight Service Station
IG
Inspector General
IGIA
Interagency Group on International Aviation
IIE
Integrated Information Environment
ILM
Inventory Logistics and Maintenance Suite
ILS
Instrument Landing System
ILSP
Integrated Logistics Support Plan
IM
Inner Marker
IMC
Instrument Meteorological Conditions
INM
Integrated Noise Model
INS
Inertial Navigation System
IOC
Initial Operating Capability
IOC
Initial Operating Condition
IOT&E
Independent Operational Test and Evaluation
IP
Internet Protocol
IPDS
Instrument Procedure Development System
IPMS
IT Program Management System
IPR
In Process Review
IPT
Integrated Product Team
iRCAS
Intranet Radio Coverage Analysis System
IRD
Initial Requirements Document
IRM
Information Resource Management
IRMC
Integrated Risk Management Checklist
IRMP
Information Resources Management Plan
ISBP
Information Security Business Portal
ISC
Initial System Capability
ISDN
Integrated Services Digital Network
ISMLS
Interim Standard Microwave Landing System
ISO
Information System Owner
ISS
Information Systems Security
ISSCA
Information Systems Security Certification Agent
ISSM
Information Systems Security Manager
ISSO
Information Systems Security Officer
IST
InterService Team
IT
Information Technology
ITC
In-Trail Climb
ITD
In-Trail Descent
ITEB
Information Technology Executive Board
ITI
Interactive Terminal Interface
ITIL
Information Technology Infrastructure Library
ITMRA
Information Technology Management Reform Act
ITSM
Information Technology Service Management
ITWS
Integrated Terminal Weather System
IVRS
Interim Voice Response System
IVSR
Interim Voice Switch Replacement Program
IVT
Interactive Video Teletraining
IW
Inside Wiring
IWGDS
Interim Weather Graphic-Display System
J2EE
Java 2 Enterprise Edition
JAI
Joint Acceptance Inspection
JCN
Job Control Number
JPDO
Joint Planning and Development Office
JRC
Joint Resources Council
JSS
Joint Surveillance System
Kbps
Kilobits Per Second
KCAS
Knots Calibrated Airspeed
kHz
Kilohertz
KIAS
Knots Indicated Airspeed
KSN
Knowledge Services Network
KVDT
Keyboard Video Display Terminal
LAA
Local Airport Advisory
LAAS
Local Area Augmentation System
LAAS
Low Altitude Alert System
LABS
Leased A B Service
LABS
Los Angeles Basin Study
LABSC
LABS GS-200 Computer
LABSR
LABS Remote Equipment
LABSW
LABS Switch System
LAC
Logical Access Control
LAGPS
Local Area Global Positioning System
LAHSO
Land and Hold Short Operation
LAN
Local Area Network
LATA
Local Access and Transport Area
LAWRS
Limited Aviation Weather Reporting Service
LAWRS
Limited Aviation Weather Reporting System
LBR
LAN Based Random Access Plan Position Indicator
LBR
LAN Based Random Access Plan Position Indicator
LCC
Life Cycle Cost
LCF
Local Control Facility
LCGS
Low Cost Ground Surveillance Radar
LCN
Local Communications Network
LDA
Landing Directional Aid
LDA
Localizer Directional Aid
LDAP
Lightweight Directory Access Protocol
LDIN
Lead-In Lights
LDR
Labor Distribution Reporting
LEC
Local Exchange Carrier
LF
Low Frequency
LFDS
Large Facility Demarcation System
LFME
Local Flow Management Enhancements
LINCS
Leased Interfacility NAS Communications System
LIRL
Low Intensity Runway Lights
LIS
Logistics and Inventory System
LLWAS
Low Level Wind Shear Alert System
LM/MS
Low/Medium Frequency
LMM
Locator Middle Marker
LMS
Logistics Management Specialist
LMS
LORAN Monitor Site
LOA
Letter of Agreement
LOB
Line Of Business
LOC
Localizer
LOCID
Location Identifier
LOI
Letter of Intent
LOM
Compass Locator at Outer Marker
LOM
Locator Outer Marker
LORAN
Long-Range Aid to Navigation
LOV
List of Values
LPC
Logistics Program Coordinator
LPV
Lateral Precision Performance with Vertical Guidance
LPV
Localizer Performance with Vertical Guidance
LRCO
Limited Remote Communications Outlet
LRNAV
Long Range Navigation
LRR
Long Range Radar
LRRAP
Long Range Resource Allocation Plan
LSMS
Line Station Maintenance Section
M1FC
Model 1 Full Capacity
MAA
Maximum Authorized Altitude
MAC
Maintenance Action Code
MAC
Mean Aerodynamic Cord
MALS
Medium-Intensity Approach Lighting System
MALSF
Medium-Intensuty Approach Light System with Sequenced Flashers
MALSR
MALS with Runway Alignment Indicator Lights
MALSR
Medium-Intensity Approach Lighting System With Runway Alignment Indicator
MAM
Maintenance Assumed Monitoring
MAP
Maintenance Automation Program
MAP
Military Airport Program
MAP
Missed Approach Point
MAP
Missed Approach Procedure
MAP
Modified Access Pricing
MARSA
Military Assumes Responsibility for Separation
MASS
Maintenance Automation System Software
MBO
Management by Objectives
Mbps
Megabits Per Second
MBT
Maneuvers Based Training
MCA
Minimum Crossing Altitude
MCAS
Marine Corps Air Station
MCC
Maintenance Control Center
MCI
Mode C Intruder
MCK
Maintenance Check
MCL
Middle Compass Locater
MCS
Maintenance and Control System
MDA
Minimum Descent Altitude
MDCRS
Metereological Data Collection and Reporting System
MDFM
Material Delivery Forecast Module
MDT
Maintenance Data Terminal
MEA
Minimum Enroute Altitude
MEARTS
Micro-EARTS
MEL
Minimum Equipment List
METAR
Aviation Routine Weather Report
METI
Meteorological Information
MF
Middle Frequency
MFJ
Modified Final Judgment
MFO
Medical Field Office
MFT
Meter Fix Crossing Time/Slot Time
MHA
Minimum Holding Altitude
MHz
Megahertz
MIA
Minimum IFR Altitudes
MIDO
Manufacturing Inspection District Office
MIO
Manufacturing Inspection Office
MIRL
Medium Intensity Runway Lights
MIS
Management Information System
MIS
Meteorological Impact Statement
MISC
Miscellaneous
MISO
Manufacturing Inspection Satellite Office
MIT
Miles In Trail
MLS
Microwave Landing System
MM
Middle Marker
MMAC
Mike Monroney Aeronautical Center
MMC
Maintenance Monitoring Console
MMPI
Minnesota Multiphase Personality Inventory
MMR
Multi-Mode Receiver
MMS
Maintenance Monitoring System
MNPS
Minimum Navigation Performance Specification
MNPSA
Minimum Navigation Performance Specifications Airspace
MNS
Mission Needs Statement
MOA
Memorandum of Agreement
MOA
Military Operations Area
MOC
Memorandum of Cooperation
MOCA
Minimum Obstruction Clearance Altitude
MOCC
Mid-States Operations Control Center
MOD
Memorandum of Decision
MODE C
Altitude Reporting Mode of Secondary Radar
MODE S
Mode Select; Discrete Addressable Secondary Radar System With Data Link
MODEM
Modulator-Demodulator
MOS
Military Operations Specialst
MOU
Memorandum of Understanding
MPAR
Multi-function Phased Array Radar
MPO
Metropolitan Planning Organization
MPS
Maintenance Processor Subsystem (OR) Master Plan Supplement
MRA
Minimum Reception Altitude
MRC
Monthly Recurring Charge
MRM
Maintenance Returned Monitoring
MSA
Minimum Safe Altitude
MSAW
Minimum Safe Altitude Warning
MSD
Multi-Site Damage
MSDA
Material Safety Data Sheet
MSDS
Microsoft Data Engine
MSL
Mean Sea Level
MSN
Message Switching Network
MSR
Monthly Status Report
MTCS
Modular Terminal Communications System
MTD
Moving Target Detection
MTI
Moving Target Indicator
MTR
Military Training Route
MUX
Multiplexor
MVA
Minimum Vectoring Altitude
MVFR
Marginal Visual Flight Rules
MWP
Meteorological Weather Processor
N/A
Not Applicable
NAAQS
National Ambient Air Quality Standards
NACG
National Aeronautical Charting Group
NADA
NADIN Concentrator
NADIN
National Airspace Data Interchange Network
NADSW
NADIN Switches
NAILS
National Airspace Integrated Logistics Support
NAMS
NADIN IA
NAP
Needs Assessment Program
NAPM
National Associate Program Manager
NAPRS
National Airspace Performance Reporting System
NAR
National Airspace Review 66
NARACS
National Radio Communications System
NARP
National Aviation Research Plan
NAS
National Air Space
NAS
National Airspace System
NAS
National Airspace System or Naval Air Station
NASDC
National Aviation Safety Data
NASE
NAS Adaptation Services Environment
NASP
National Airspace System Plan
NASPAC
National Airspace System Performance Analysis Capability
NASR
National Airspace System Resources
NASTEP
National Airspace System Technical Evaluation Program
NATCA
National Air Traffic Control Association
NATCA
National Air Traffic Controllers Association
NATCO
National Communications Switching Center
NATS
National Air Traffic Service
NAVAID
Navigation Aid
NAVAIDS
Navigational Aids
NAVMN
Navigation Monitor and Control
NAWAU
National Aviation Weather Advisory Unit
NAWPF
National Aviation Weather Processing Facility
NBAA
National Business Aircraft Association
NBCAP
National Beacon Code Allocation Plan
NBCFAE
National Black Coalition of Federal Aviation Employees
NCAR
National Center for Atmospheric Research; Boulder, CO
NCF
National Control Facility
NCIU
NEXRAD Communications Interface Unit
NCP
NAS Change Proposal
NCP
Noise Compatibility Program
NCS
National Communications System
NSD
Navigation System Database
NDB
Non-directional Beacon
NDC
National Data Center
NDI
Nondestructive Inspection
NDNB
NADIN II
NDP
National Airspace System Defense Programs
NEC
National Electric Code
NED
National Elevation Data
NEM
Noise Exposure Map
NEMC
Network Enterprise Maintenance Center
NEPA
National Environmental Policy Act
NEXRAD
Next Generation Weather Radar
NextGen
Next Generation Air Transportation System
NFAX
National Facsimile Service
NFD
National Flight Database
NFDC
National Flight Data Center
NFDD
National Flight Data Digest
NFIS
NAS Facilities Information System
NFP
NIMS Premier Facility
NGA
National Geospatial-Intelligence Agency
NHCFAE
National Hispanic Coalition of Federal Aviation Employees
NI
Network Interface
NICS
National Airspace System Interfacility Communications System
NICS
National Interfacility Communications System
NIMA
National Imagery and Mapping Agency
NIMS
NAS Infrastructure Management System
NIPT
National Infrastructure Planning Team
NISC
NAS Implementation Support Contract
NISC
NAS Integration Support Contractor
NIST
National Institute of Standards and Technologies
NM
Nautical Mile
NMAC
Near Mid Air Collision
NMC
National Meteorological Center
NMCE
Network Monitoring and Control Equipment
NMCS
Network Monitoring and Control System
NOAA
National Oceanic and Atmospheric Administration
NOC
Notice Of Completion
NOCC
National Operation Control Center
NOG
National Operations Group
NOM
NAS Operations Manager
NOREP
National Oceanic Review and Enhancement Program
NOTAM
Notice to Airmen
NPDES
National Pollutant Discharge Elimination System
NPE
Non-primary Airport Entitlement
NPIAS
National Plan for Integrated Airport Systems
NPM
NAS Program Manager/Management
NPR
National Performance Review
NPRM
Notice of Proposed Rulemaking
NRC
Non-Recurring Charge
NRCS
National Radio Communications Systems
NRP
National Route Program
NSAP
National Service Assurance Plan
NSC
National Service Center
NSP
National Simulator Program
NSRCATN
National Strategy to Reduce Congestion on America's Transportation Network
NSSFC
National Severe Storms Forecast Center
NSSL
National Severe Storms Laboratory; Norman, OK
NSWRH
NWS Regional Headquarters
NTAP
Notices To Airmen Publication
NTP
National Transportation Policy
NTP
Notice to Proceed
NTS
NOTAM Tracking System
NTSB
National Transportation Safety Board
NTZ
No Transgression Zone
NWP
National Work Plan
NWP
NextGen Weather Processor
NWS
National Weather Service
NWSR
NWS Weather Excluding NXRD
NXRD
Advanced Weather Radar System
O&M
Operations and Maintenance
O21
Ocean21
OAG
Official Airline Guide
OALT
Operational Acceptable Level of Traffic
OAMP
Off-Line Aircraft Management Program
OAP
Oceanic Automation Program
OAS
Oceanic Automation System
OASIS
Operational and Supportability Implementation System
OATS
Office Automation Technology Services
OAW
Off-airway Weather Station
OC4J
Oracle Containers for Java Enterprise Edition
OCA
Oceanic Control Area
OCC
Operations Control Center
OCDB
Oracle Content Database
ODAL
Omnidirectional Approach Lighting System
ODALS
Omnidirectional Approach Lighting Systems
ODAPS
Oceanic Display and Planning System
ODAPS
Oceanic Display and Processing Station
ODL
Oceanic Data Link
ODRA
Office of Dispute Resolution for Acquisition
ODS
Operational Data Store
OE
Obstacle Evaluation
OE/AAA
Obstruction Evaluation/Airport Airspace Analysis
OEM
Original Equipment Manufacturer
OEP
Operational Evolution Plan
OEP
Operational Evolution Plan / Partnership
OETS
Obstacle Evaluation Tracking System
OFA
Object Free Area
OFDPS
Offshore Flight Data Processing System
OFT
Outer Fix Time
OFZ
Obstacle Free Zone
OGC
Open Geospatial Consortium
OIG
Office of the Inspector General
OM
Outer Marker
OMB
Office of Management and Budget
OMEGA
Very Low Radio Navigation System
OMIC
Operations Manager in Charge
ONER
Oceanic Navigational Error Report
OPD
Optimum Profile Descent
OPI
Office of Primary Interest
OPLT
Operational Acceptable Level of Traffic
OPR
Office of Primary Responsibility
OPS
AF Operations
OPS
Operations
OPSNET
Operations Network
OPSW
Operational Switch
OPX
Off Premises Exchange
ORD
Operational Readiness Demonstration
ORD
Operational Readiness Demonstration - Milestone
ORS
Obstruction Repository System
OS
Operating System
OS
Operational Shakedown & Cutover
OSA
Operational Safety Assessment
OSD
Operational Suitability Demonstration
OSDS
Oceanic System Development and Support
OSHA
Occupational Safety and Health Administration
OSIP
Office Safety Inspection Program
OSRWG
Oceanic Separation Reduction Working Group
OST
Office of the Secretary of Transportation
OT&E
Operational Test and Evaluation
OTFO
Operations Technical Field Office
OTPS
Oceanic Traffic Planning System
OTR
Oceanic Transition Route
OTS
Organized Track System
OTS
Out of Service
P2R2
Preferred Route Reduction Program
PA
Project Authorization
PABX
Private Automated Branch Exchange
PAD
Packet Assembler/Disassembler
PAM
Peripheral Adapter Module
PAMRI
Peripheral Adapter Module Replacement Item
PANS
Procedures for Air Navigation Services
PAPI
Precision Approach Path Indicator
PAR
Precision Approach Radar
PAR
Preferential Arrival Route
PAS
Project Assignment Sheet
PASS
Professional Airway System Specialists
PATS
Precision Approach Tracking System
PATWAS
Pilots Automatic Telephone Weather Answering Service
PBCT
Proposed Boundary Crossing Time
PBRF
Pilot Briefing
PBX
Private Branch Exchange
PCA
Positive Control Airspace
PCB
Personnel Compensation and Benefits
PCB&T
Personnel Compensation Benefits and Travel
PCM
Pulse Code Modulation
PCN
Project Control Number
PCPS
Purchase Card Processing System
PCS
Permanent Change of Station
PCS
Power Conditioning System
PCS
Production Control System
PDA
Personal Digital Assistant
PDAR
Preferential Arrival And Departure Route
PDC
Pre-Departure Clearance
PDC
Program Designator Code
PDF
Portable Document Format
PDN
Public Data Network
PDR
Preferential Departure Route
PDS
Proficiency Development Specialists
PED
Personal Electronic Devices
PFAST
Passive Final Approach Spacing Tool
PFC
Passenger Facility Charge
PFC
Porous Friction Course
PgMM
Program Management Methodology
PGP
Planning Grant Program
PHA
Preliminary Hazard Analysis
PHL
Preliminary Hazard List
PIC
Principal Interexchange Carrier
PIDP
Programmable Indicator Data Processor
PII
Personally Identifiable Information
PIM
Program Implementation Manager
PIP
Primary Interface Processor
PIP
Program Implementation Plan
PIREP
Pilot Weather Report
PjMM
Project Management Methodology
PjSA
Project Scope Agreement
PKI
Public Key Infrastructure
PM
Preventive Maintenance
PMA
Parts Manufacturer Approval
PMC
Project Materials Cumulative
PML
Project Material List
PMS
Program Management System
POC
Point-of-Contact
POCC
Pacific Operations Control Center
POP
Point-0f-Presence
POT
Point-of-Termination
PPE
Personal Protective Equipment
PPIMS
Personal Property Information Management System
PPR
Personal Property Report
PR
Procurement Request
PR
Project Review / Program Review
PRI
Primary Rate Interface
PRM
Precision Runway Monitor
PSC
Program Support Center
PSD
Process Support Document
PSDN
Public Switched Data Network
PSL
Projected Service Life
PSN
Packet Switched Network
PSR
Project Status Report
PSS
Packet Switched Service
PSTN
Public Switched Telephone Network
PT
Product Team
PTC
Presumed-to-Conform
PTR
Program Technical/Trouble Report
PTS
Procedures Tracking System
PUB
Publication
PUP
Principal User Processor
PVC
Permanent Virtual Circuit
PVD
Plan View Display
PWI
Proximity Warning Indicator
QA
Quality Assurance
QAE
Quality Assurance Evaluator
QAR
Quality Assurance Resource
QC
Quality Control
QMS
Quality Management System
R&D
Research and Development
R,E&D
Research, Engineering and Development
RADLO
Regional Air Defense Liaison Office
RAIL
Runway Alignment Indicator Lights
RAPCO
Radar Approach Control (USAF)
RAPCON
Radar Approach Control
RAPCON
Radar Approach Control (FAA)
RAPPI
Random Access Plan Position Indicator
RASP
Regional Airport System Plan
RAT
Risk Assessment Team
RATCC
Radar Air Traffic Control Center
RATCF
Radar Air Traffic Control Facility (USN)
RBC
Rotating Beam Ceilometer
RBDPE
Radar Beacon Data Processing Equipment
RBPM
Remote Beacon Performance Monitor
RBSS
Radar Bomb Scoring Squadron
RCAG
Remote Communications Air/Ground
RCAS
Radio Coverage Analysis System
RCC
Rescue Coordination Center
RCCC
Regional Communications Control Center
RCE
Radio Control Equipment
RCF
Remote Communications Facility
RCIU
Remote Control Interface Unit
RCL
Radio Communications Link
RCLR
Radio Communications Link Repeater
RCLR
RCL Repeater
RCLT
RCL Terminal
RCM
Reliability Centered Maintenance
RCO
Remote Communications Outlet
RCU
Remote Control Unit
RD
Requirements Document
RDP
Radar Data Processing
RDSIM
Runway Delay Simulation Model
RDVS
Rapid Deployment Voice Switch
RE
Resident Engineer
REDAC
Research, Engineering & Development Advisory Committee
REDMACS
Research, Engineering, and Development Monitoring, Analysis and Control System
REGIS
Regional Information System
REIL
Runway End Identification Light
RF
Radio Frequency
RFI
Radio Frequency Interference
RFI
Request for Information
RFI
Return on Future Investment
RFQ
Request for Quotes
RIIEP
Runway Incursion Information Evaluation Program
RIP
Runway Incursion Program
RM
Risk Management
RMCC
Remote Monitor Control Center
RMCF
Remote Monitor Control Facility
RML
Radar Microwave Link
RMLR
RML Repeater
RMLS
Remote Monitoring and Logging System
RMLT
RML Terminal
RMM
Remote Maintenance Monitoring
RMMC
Remote Maintenance Monitoring and Control
RMMS
Remote Maintenance Monitoring System
RMMS
Remote Maintenance Monitoring Systems
RMS
Remote Maintenance Subsystem
RMS
Remote Monitoring Subsystem
RMS
Risk Management System
RMSC
Remote Monitoring Subsystem Concentrator
RMT
Resource Management Tool
RMT
Risk Management Team
RNAV
Area Navigation
RNP
Required Navigation Performance
RNP-10
Required Navigation Performance
ROA
Record of Assistance
ROC
Regional Operations Center
ROD
Record of Decision
ROM
Read-Only Memory
ROSA
Report of Service Activity
ROSHM
Regional Occupational Safety and Health Manager
ROT
Runway Occupancy Time
RP
Restoration Priority
RPC
Restoration Priority Code
RPG
Radar Processing Group
RPI
Real Property Inventory
RPM
Rational Portfolio Manager
RPM
RTP Program Manager
RPMES
Regional Program Manager for Environment and Safety
RPOC
Risk Point-of-Contact
RPR
Real Property Report
RPV
Remotely Piloted Vehicle
RPZ
Runway Protection Zone
RRCS
Remote Radio Control System
RRH
Remote Reading Hygrothermometer
RRHS
Remote Reading Hydrometer
RRWDS
Remote Radar Weather Display
RRWSS
RWDS Sensor Site
RSA
Runway Safety Area
RSAP
Runway Safety Action Plan
RSAT
Runway Safety Action Team
RSL
Runway Status Light
RSS
Remote Speaking System
RT
Remote Transmitter
RT&BTL
Radar Tracking and Beacon Tracking Level
RTAD
Remote Tower Alphanumeric Display
RTCA
Radio Technical Commission for Aeronautics
RTDS
Radar Terminal Display System
RTE
Route
RTP
Regional Transportation Plan
RTR
Remote Transmitter/Receiver
RTRD
Remote Tower Radar Display
RTS
Return to Service
RUC
Rapid Update Cycle
RVM
Radar Video Map
RVR
Runway Visual Range
RVSM
Reduced Vertical Separation Minima
RW
Runway
RWP
Real-time Weather Processor
RWSL
Runway Status Lights
RWY
Runway
RX
Receiver
S/S
Sector Suite
SA
System Administrator
SAC
Strategic Air Command
SAFI
Semi Automatic Flight Inspection
SAGA
System Safety Approach for General Aviation
SAI
Safety Attribute Inspection
SALS
Short Approach Lighting System
SAMS
Special Use Airspace Management System
SAN
Storage Area Network
SAPS
Staffing and Personnel System
SAR
Search and Rescue
SARP
Standards and Recommended Practices
SAS
Safety Assurance System
SASO
System Approach for Safety Oversight
SAT
Security, Awareness, and Training System
SAT
SEOAT Analytical Team
SATCOM
Satellite Communications
SAVES
Strategic Sourcing for the Acquisition of Various Equipment and Supplies
SAWRS
Supplemental Aviation Weather Reporting Service
SAWRS
Supplementary Aviation Weather Reporting System
SBGP
State Block Grant Program
SBIR
Small Business Innovation Research
SBS
Surveillance Broadcast Services
SBT
Scenario Based Training
SCADA
Supervisory Control and Data Acquisition
SCAP
System Certification and Accreditation Package
SCAT
Staffing and Cost Analysis Tool
SCC
System Command Center
SCT
Southern California Area TRACON (Metroplex)
SCVTS
Switched Compressed Video Telecommunications Service
SDF
Simplified Direction Finding
SDF
Software Defined Network
SDIS
Switched Digital Integrated Service
SDLC
Software Development Life Cycle
SDP
Service Delivery Point
SDR
Service Difficulty Report
SDR
System Documentation Release
SDS
Switched Data Service
SEC
Strategic Event Coordination
SECM
Safety and Environmental Compliance Manager
SECRA
Secondary Radar
SEL
Single Event Level
SELF
Simplified Short Approach Lighting System With Sequenced Flashing Lights
SEOAT
Systems Engineering Operational Analysis Team
SERC
Software Engineering Resource Center
SET
Spacing Efficiency Tool
SETA
System Engineering and Technical Assistance
SFAR
Special Federal Aviation Regulations
SFAR-38
Special Federal Aviation Regulation 38
SFD
Service Flow Diagram
SGI
Silicon Graphics Incorporated
SHPO
State Historic Preservation Officer
SHRP
Strategic Highway Research Program
SIAP
Standard Instrument Flight Procedure
SIC
Service Initiation Charge
SID
Standard Instrument Departure
SID
Station Identifier
SIGMET
Significant Meteorological Information
SIMMOD
Airspace and Airport Simulation Model
SIP
State Implementation Plan
SIR
Screening Information Request
SLEP
Service Life Extension Program
SM
Statute Mile
SMA
Surface Monitor Aid
SMA
Surface Movement Advisor
SMF
Systems Management Facility
SMGC
Surface Movement Guidance and Control
SMGCS
Surface Movement Guidance and Control System
SMMC
System Maintenance Monitor Console
SMO
System Management Office
SMPS
Sector Maintenance Processor Subsystem
SMS
Safety Management System
SMS
Simulation Modeling System
SMT
Schedule Management Toolset
SNR
Signal-to-Noise Ratio
SNT
Staffed NextGen Tower
SOAR
System of Airports Reporting
SOC
Service Operations Center
SOC
Service Oversight Center
SOIR
Simultaneous Operations On Intersecting Runways
SOIWR
Simultaneous Operations on Intersecting Wet Runways
SOP
Standard Operating Practice
SOP
Standard Operating Procedures
SOW
Statement of Work
SP
Surveillance Processing
SPAS
System Performance Analysis System
SPIFR
Single Pilot IFR
SRAP
Sensor Receiver and Processor
SRM
Safety Risk Management
SRM
Single Pilot Resource Management
SRMD
Safety Risk Management Document
SRMDM
Safety Risk Management Memo
SRS
Shuttle Reservation System
SRTM
Shuttle Radar Topography Mission
SSALF
SSALS with Sequenced Flashers
SSALR
Simplified Short Approach Lighting System
SSB
Single Side Band
SSC
System Support Center
SSC
Systems Support Center
SSD
System Support Directive
SSE
Servicing Security Element
SSM
System Support Modification
SSRWG
Systems Safety Risk Working Group
SST
System Shakedown Testing
ST&E
Security Test and Evaluation
STAMP
Site Transition Activation Management Plan
STAR
Standard Terminal Arrival Route
STAR
Standard Terminal Arrivals
STARS
Standard Terminal Automation Replacement System
STC
Supplemental Type Certificate
STD
Standard
STMP
Special Traffic Management Program
STMUX
Statistical Data Multiplexer
STOL
Short Take - Off and Landing
STOL
Short Takeoff and Landing
STR
System Technical Release
STT
Staffing to Traffic
STVS
Small Tower Voice Switch
SUA
Special Use Airspace
SUP
Suspected Unapproved Parts
SUPCOM
Supervisors Committee (AAT AND AAF)
SUPPS
Supplementary Procedures
SURPIC
Surface Picture
SVCA
Service A
SVCB
Service B
SVCC
Service C
SVCO
Service O
SVFB
Interphone Service F (B)
SVFC
Interphone Service F (C)
SVFD
Interphone Service F (D)
SVFO
Interphone Service F (A)
SVFR
Special Visual Flight Rules
SWAP
Severe Weather Avoidance Procedure/Program
SWIFT
Selections Within Faster Times
SWIM
System Wide Information Management
SWPPP
Storm Water Pollution Protection Plan
T1MUX
T1 Multiplexer
TAAS
Terminal Advance Automation System
TAC
Tactical Air Command (USAF) Tester
TAC
Terminal Area Chart
TACAN
Tactical Air Navigation
TACAN
Tactical Aircraft Control and Navigation
TACR
TACAN at VOR, TACAN only
TAF
Terminal Area Forecast
TAMR
Terminal Automation Modernization and Replacement
TARS
Terminal Automated Radar Service
TAS
True Air Speed
TATCA
Terminal Air Traffic Control Automation
TAVT
Terminal Airspace Visualization Tool
TAWS
Terrain Awareness and Warning System
TBFM
Time Based Flow Management
TBO
Trajectory Based Operation
TCA
Tactical Customer Advocate
TCA
Terminal Control Area
TCA
Traffic Control Airport or Tower Control Airport
TCACCIS
Transportation Coordinator Automated Command and Control Information System
TCAP
Traffic Count Automation Program
TCAS
Traffic Alert and Collision Avoidance System
TCC
DOT Transportation Computer Center
TCCC
Tower Control Computer Complex
TCE
Tone Control Equipment
TCLT
Tentative Calculated Landing Time
TCO
Telecommunications Certification Officer
TCOM
Terminal Communications
TCS
Tower Communications System
TCVR
Transceiver
TDDS
Terminal Data Display System
TDLS
Tower Data-Link Services
TDMUX
Time Division Data Multiplexer
TDWR
Terminal Doppler Weather Radar
TELCO
Telephone Company
TELMS
Telecommunications Management System
TERP
Terminal Instrument Procedure
TFAC
To Facility
TFDM
Tower Flight Data Manager
TFM
Traffic Flow Management
TFMS
Traffic Flow Management System
TFR
Temporary Flight Restriction
TH
Threshold
TIB
Technical Instruction Book
TIMS
Telecommunications Information Management System
TIPH
Taxi Into Position and Hold
TIPS
Terminal Information Processing System
TL
Taxilane
TM&O
Telecommunications Management and Operations
TMA
Traffic Management Advisor
TMC
Traffic Management Coordinator
TMC
Travel Management Center
TMC/MC
Traffic Management Coordinator/Military Coordinator
TMCC
Terminal Information Processing System
TMCC
Traffic Management Computer Complex
TMF
Traffic Management Facility
TMI
Traffic Management Initiative
TML
Television Microwave Link
TMLI
Television Microwave Link Indicator
TMLR
Television Microwave Link Repeater
TMLT
Television Microwave Link Terminal
TMP
Traffic Management Processor
TMS
Traffic Management System
TMSPS
Traffic Management Specialists
TMU
Traffic Management Unit
TNAV
Terminal Navigational Aids
TOCC
Technical Operations Control Center
TODA
Takeoff Distance Available
TOF
Time Of Flight
TOFMS
Time of Flight Mass Spectrometer
TOPS
Telecommunications Ordering and Pricing System (GSA software tool)
TORA
Take-off Run Available
TP
Telecommunication Processor
TP
Track Processing
TPP
Terminal Procedures Publication
TPR
Technical Performance Record
TR
Telecommunications Request
TRACAB
Terminal Radar Approach Control in Tower Cab
TRACON
Terminal Radar Approach Control
TRACON
Terminal Radar Approach Control Facility
TRAD
Terminal Radar Service
TRB
Transportation Research Board
TRD
Technical Reference Data
TRDR
Technical Reference Data Record
TRNG
Training
TS
Top Secret
TSA
Taxiway Safety Area
TSARTS
Terminal Stand-Alone Radar Training System
TSARTS
Terminal Stand-Alone Radar Training System
TSC
Technical Support Center
TSD
Traffic Situation Display
TSD
Traffic Situational Display
TSEC
Terminal Secondary Radar Service
TSO
Technical Standard Order
TSP
Telecommunications Service Priority
TSR
Telecommunications Service Request
TSS
Tower Simulation System
TSSC
Technical Support Services Contract
TSYS
Terminal Equipment Systems
TTMA
TRACON Traffic Management Advisor
TTWG
Technical Transfer Working Group
TTY
Teletype
TUR
Time Utilization Report
TVOR
Terminal VHF Omnidirectional Range
TVSR
Terminal Voice Switch Replacement
TW
Taxiway
TWEB
Transcribed Weather Broadcast
TWIP
Terminal Weather Information for Pilots
TWR
Tower (non-controlled)
TWY
Taxiway
TX
Transmitter
TY
Type (FAACIS)
UAS
Uniform Accounting System
UAS
Unmanned Aircraft Systems
UAT
Universal Access Transceiver
UBA
User Benefits Applications
UBI
User Benefits Infrastructure
UCR
Unsatisfactory Condition Report
UFAS
Uniform Federal Accessibility Standard
UHF
Ultra High Frequency
UNIX
Uniplexed Information and Computing System
UPR
User Preferred Route
UPS
Uninterruptable Power Supply
UPT
User Preferred Trajectory
URA
Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970
URET
User Request Evaluation Tool
USAF
United States Air Force
USC
United States Code
USCG
United States Coast Guard
USG
United States Government
USNS
United States Notices to Airmen System
USOAP
Universal Safety Oversight Audit Program
USOC
Uniform Service Order Code
UTC
Coordinated Universal Time (ZULU)
VALE
Voluntary Airport Low Emission
VALE
Voluntary Airport Low Emission Program
VASI
Visual Approach Slope Indicator
VBScript
Visual Basic Scripting Edition
VDF
Very High Frequency Direction-Finding Station
VDL
Very High Frequency Data Link
VDME
VOR with Distance Measuring Equipment
VEARS
VSCS Emergency Access Radio System
VF
Voice Frequency
VFR
Visual Flight Rules
VGSI
Visual Guidance Slope Indicator
VHF
Very High Frequency
VLF
Very Low Frequency
VLJ
Very Light Jet
VMC
Visual Meteorological Conditions
VMS
Virtual Memory System
VNAV
Visual Navigational Aids
VNTSC
Volpe National Transportation System Center
VOIP
Voice Over Internet Protocol
VON
Virtual On-net
VOR
Very High Frequency Omnidirectional Range
VOR/DME
Very High Frequency Omnidirectional Range Collocated with Distance Measuring Equipment
VOR/DME
VHF Omnidirectional Range/Distance Measuring Equipment
VORTAC
Very High Frequency Omnidirectional Range Collocated Tactical Air
VORTAC
VOR collocated with TACAN
VOT
VOR Test Facility
V/PD
Vehicle/Pedestrian Deviation
VRRP
Voice Recorder Replacement Program
VRS
Voice Recording System
VSBP
Voice Switch Bypass
VSCS
Voice Switching and Control System
VTA
Vertex Time of Arrival
VTAC
VOR collocated with TACAN
VTOL
Vertical Take-off and landing
VTS
Voice Telecommunications System
WAAS
Wide Area Augmentation System
WADGPS
Wide Area Differential Global Positioning System
WAN
Wide Area Network
WARP
Weather and Radar Processor
WASS
Wide Area Augmentation System - GPS
WBS
Work Breakdown Structure
WC
Work Center
WCAM
Weather Camera
WCIS
Workmen's Compensation Information System
WCP
Weather Communications Processor
WECO
Western Electric Company
WESCOM
Western Electric Satellite Communications
WFD
Widespread Fatigue Damage
WG
Working Group
WiFi
Wireless Fidelity
WJHTC
William J. Hughes Technical Center
WMS
Web Map Service
WMS
Wide-area Master Station
WMSC
Weather Message Switching Center
WMSCR
Weather Message Switching Center Replacement
WOCC
Washington Operations Center Complex
WRS
Wide Area Augmentation System Reference Station
WRS
Wide-area Reference Station
WSA
Western Service Area
WSC
Western Service Center
WSCMO
Weather Service Contract Meteorological Observatory
WSFO
Weather Service Forecast Office
WSO
Weather Service Office
WSP
Weather Systems Processor
WSR
Weather Surveillance Radar
WSUS
Windows Server Update Service
WTHR
Weather
WX
Weather
XML
eXtensible Markup Language

There are currently no 'Y' acronyms.

ZAB
Albuquerque ARTCC
ZAN
Anchorage ARTCC
ZAU
Chicago ARTCC
ZBW
Boston ARTCC
ZDC
Washington ARTCC
ZDV
Denver ARTCC
ZFW
Fort Worth ARTCC
ZHU
Houston ARTCC
ZID
Indianapolis ARTCC
ZJX
Jacksonville ARTCC
ZKC
Kansas City ARTCC
ZLA
Los Angeles ARTCC
ZLC
Salt Lake City ARTCC
ZMA
Miami ARTCC
ZME
Memphis ARTCC
ZMP
Minneapolis ARTCC
ZNY
New York ARTCC
ZOA
Oakland ARTCC
ZOB
Cleveland ARTCC
ZSE
Seattle ARTCC
ZTL
Atlanta ARTCC