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

AAC

Approval, acceptance, concurrence

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

ACS

Airman Certification Standards

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

Air Defense Sector

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

Aircraft Evaluation Division

AED

Automated External Defibrillator

AEDT

Aviation Environmental Design Tool

AEE

FAA Office of Environment and Energy

AEEC

Airlines Electronic Engineering Committee

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

AIT

Information Technology Service

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

AMOC

Air and Marine Operations Center (DoD)

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

ANSP

Air Navigation Service Providers

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

APC

Air-to-Ground Protocol Converter

APG

Airport Planning Guidance

APG

Agency Priority Goals

API

Office of Policy and International Affairs

APL

Policy, International Affairs and Environment

APM

Approach Path Monitor

APO

Office of Aviation Policy and Plans

APP

Approach

APP

Agency Performance Plan

APR

Agency Performance Report

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

ARA

National Engagement and Regional Administration

ARAC

Army Radar Approach Control (AAF)

ARAC

Aviation Rulemaking Advisory Committee

ARB

Air Reserve Base

ARB

Architectural Review Board

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

ATCALS

Air Traffic Control and Landing Systems (DoD)

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

ATSI

Air Traffic Safety Inspector

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

AVP

Office of Accident Investigation and Prevention

AVS

FAA Office of Aviation Safety

AVSI

Aerospace Vehicle Systems Institute

AWC

Air Worthiness Certification Tool

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

BAA

Bilateral Airworthiness Agreement

BAD

Budget Analysis Database

BANS

BRITE Alphanumeric System

BART

Billing Analysis Reporting Tool (GSA software tool)

BASA

Bilateral Aviation Safety Agreement

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

BP

Business Plan

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/E

Compliance and Enforcement

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

CAP

Corrective Action Plan

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

Computer Appliance System Service

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

CM

Certificate 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

Command Post

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

CPOC

Correspondence Point-of-Contact

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

CSTI

Corporate Short Term Incentives

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

DMIR

Designated Manufacturing Inspection Representative

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

E-OSE

Enterprise Operational Support Environment

EA

Enterprise Architecture

EA

Environmental Assessment

EADS

Eastern Air Defense Sector

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

EDRS

Electronic Document Retrieval 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

EON

Emergency Operations Network

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

FACSFAC

Fleet Area Control and Surveillance Facility

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

FAVES

FAA Administrative Voice Enterprise Services

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

FP21

Flight Plan 21

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

GANP

Global Air Navigation Plan

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

GPO

Government Printing Office

GPRA

Government Performance and Results Act

GPRAMA

Government Performance and Results Modernization 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

ICA

Continued Airworthiness

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

IM

Interim Migration

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

JWICS

Joint World-Wide Intelligence Communications System (DoD)

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

LOI

Letter of Investigation

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

MAR

Minimally Attended Radar

MARSA

Military Assumes Responsibility for Separation

MCAG

Marine Corp Air Ground Combat Center

MASS

Maintenance Automation System Software

MASS

More Agile Systems & Service Levels

MBO

Management by Objectives

Mbps

Megabits Per Second

MBT

Maneuvers Based Training

MCA

Minimum Crossing Altitude

MCAS

Marine Corps Air Station

MRU

Military Radar Unit

MRUF

Military Radar Unit Facility

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

MIS

Mechanical Interruption Summary Report

MIMT

Management Inspection Management Team

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

MOC

Memorandum of Correction

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

MON

Memorandum of Non-Compliance

MOS

Military Operations Specialist

MOU

Memorandum of Understanding

MPAR

Multi-function Phased Array Radar

MPO

Metropolitan Planning Organization

MPS

Maintenance Processor Subsystem (OR) Master Plan Supplement

MPS

Minimum Performance Standard

MRA

Minimum Reception Altitude

MRC

Monthly Recurring Charge

MRM

Maintenance Returned Monitoring

MRR

Mechanical Reliability Report

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

NAS

Naval Air Station

NIWC

Naval Information War Center

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

NDAG

NAS Defense Air Ground

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

NIPRNET

Non-Secure IP Router Network (DoD)

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

NOD

National Operations Development

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

NRT

Near-Real Time

NSA

National Safety Analysis

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

OPASI

Observation of Potential Adverse Safety Impact

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

OSE

Operational Support Environment

OSHA

Occupational Safety and Health Administration

OSI/M

Organizational Success Increase (OSI)/Organizational Success Measure (OSM)

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

PAH

Production Approval Holder

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

PAR

Performance and Accountability Report

PAS

Project Assignment Sheet

PASS

Professional Aviation Safety 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

PC

Performance Committee APL

PC

Personal Computer

PC

Production Certificate

PCA

Positive Control Airspace

PCB

Personnel Compensation and Benefits

PCB

Production Certification Board (Audit)

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

PERTI

Plan, Execute, Review, Train and Improve

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

PI

Principal Inspector

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

POG

Portfolio of Goals

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

QSA

Quality Systems Audit

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

RAWS

Remote Automatic Weather Stations (FAA)

RAWS

Radar, Airfield & Weather Systems (Air Force)

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

RBRT

Risk-Based Resource Targeting

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

REC

Request Evaluation Checklist

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

RTR

Remote Terminal Radar

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

S2 PMR

Deputy Secretary Performance Review by DOT Mode

SA

System Administrator

SAC

Strategic Air Command

SAFI

Semi Automatic Flight Inspection

SAGA

System Safety Approach for General Aviation

SAI

Safety Attribute Inspection

SAI

Special Audit Item

SALS

Short Approach Lighting System

SAM

Status Acquisition Message (DISA)

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

SAWS

Stand Alone Weather Sensors

SBGP

State Block Grant Program

SBIR

Small Business Innovation Research

SBM

Strategic Business Management Module Housed in the SPIRE tool

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

SDI

Service Difficulty Investigation

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

SEI

Special Emphasis Item

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

SERFI

Special Emphasis Request for Information

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

SFP

Special Flight Permit

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

SITA

Société Internationale de Télécommunications Aéronautiques

SIMMOD

Airspace and Airport Simulation Model

SIP

State Implementation Plan

SIPRNET

Secret IP Router Network (DoD)

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

SPORT

Space Positional Optical Radar Tracking

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

STI

Short Term Incentives

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

TC

Type Certificate

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

TCBM

Type Certification Board Meeting

TCCC

Tower Control Computer Complex

TCDS

Type Certificate Data Sheet

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

TFDS
          Terminal Facility Design Standard

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

TOM

Transition of Operations and Maintenance

TOPS

Telecommunications Ordering and Pricing System (GSA software tool)

TORA

Take-off Run Available

TP

Telecommunication Processor

TP

Track Processing

TPOG

Terminal Precipitation On Glass

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

Telecommunications Service Order (DISA)

TSO

Technical Standard Order

TSOA

Technical Standard Order Authorization

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

UEI

Unique Entity ID

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

USI

Unique Service Identifier

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

VDRP

Voluntary Disclosure Reporting Program

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

VWOS

Visual Weather Observation System

WAAS

Wide Area Augmentation System

WADGPS

Wide Area Differential Global Positioning System

WADS

Western Air Defense Sector

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

WN

Warning Notice

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

WSTRP

Weather Sensors Technology Refresh Program

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