Aviation Glossary

A/C-Aircraft
A/G-Air to Ground
A/H-Altitude/Height
AAC-Mike Monroney Aeronautical Center
AAF-Army Air Field
AAI-Arrival Aircraft Interval
AAM-Advanced Air Mobility
AAM-Advanced Air Mobility
AAP-Advanced Automation Program
AAR-Airport Acceptance Rate
ABDIS-Auto Data Inter System Service B
AC-Advisory Circular
AC-Alternating Current
ACAIS-Air Carrier Activity Info 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
ACF-Area Control Facility
ACFO-Aircraft Certification Field Office
ACFT-Aircraft
ACI-NA- Airports Council Inter-N America
ACID-Aircraft Identification
ACIP-Airport Capital Improvement Plan
ACLS-Automatic Carrier Landing System
ACLT-Actual Landing Time Calculated
ACM-Airport Certification Manual
ACO-Aircraft Certification Office
ACO-Airports Compliance Field Operations
ACRP-Airport Coop Research Program
ADA-Air Defense Area
ADAP-Airport Development Aid Program
ADAS-AWOS Data Acquisition System
ADCCP-Advanced Data Comms Ctl Pro
ADDA-Administrative Data
ADF-Automatic Direction Finding
ADG-Airplane Design Group
ADI-Automatic De-Ice and Inhibitor
ADIN-AUTODIN Service
ADIP-Airport Data and Information Portal
ADIZ-Air Defense Identification Zone
ADL-Aeronautical Data-Link
ADLY-Arrival Delay
ADO-Airline Dispatch Office
ADP-Automated Data Processing
ADS-Automatic Dependent Surveillance
ADS-B-Auto Dependent Surveill-Broadcast
ADSIM-Airfield Delay Simulation Model
ADSY-Administrative Equipment Systems
ADTN2000-Admin Data Trans Net 2000
ADTN-Admin Data Transmission Network
ADVO-Administrative Voice
AED-Aircraft Evaluation Division
AERA-Auto En-Route Air Traffic Control
AEX-Automated Execution
AF-Airway Facilities
AFB-Air Force Base
AFIS-Automated Flight Inspection System
AFP-Area Flight Plan
AFRES-Air Force Reserve Station
AFS-Airways Facilities Sector
AFSFO-AFS Field Office
AFSFU-AFS Field Unit
AFSOU-AFS Field Office Unit
AFSS-Automated Flight Service Station
AFTN-Automated Fixed Telecom Network
AGIS-Airports Geographic Info System
AGL-Above Ground Level
AID-Airport Information Desk
AIG-Airbus Industries Group
AIM-Airman's Information Manual
AIP-Airport Improvement Plan
AIRMET-Airmen's Meteorological Info
AIRNET-Airport Network Simulation Model
AIS-Aeronautical Information Service
AIT-Automated Information Transfer
ALP-Airport Layout Plan
ALS-Approach Lighting System
ALSF1-ALS with Sequenced Flashers I
ALSF2-ALS with Sequenced Flashers II
ALSIP-Approach Lighting Sys Impro Plan
ALTRV-Altitude Reservation
AMASS-Airport Movement Area Safety Sys
AMCC-ACF/ARTCC Maint Control Center
AMOS-Auto Meteo Observation Station
AMP-Airport Master Plan
ANC-Alternate Network Connectivity
ANCA-Airport Noise and Capacity Act
ANG-Air National Guard
ANGB-Air National Guard Base
ANMS-Auto Network Monitoring System
ANSI-American National Standards Group
AOA-Air Operations Area
AP-Acquisition Plan
APP-Approach
APS-Airport Planning Standard
AQAFO-Aero Quality Ass Field Office
ARAC-Army Radar Approach Control (AAF)
ARAC-Aviation Rulemaking Advisory Com
ARC-Airport Reference Code
ARCTR-FAA Aeronautical Center/Academy
ARF-Airport Reservation Function
ARFF-Aircraft Rescue and Fire Fighting
ARINC-Aeronautical Radio, Inc.
ARLNO-Airline Office
ARO-Airport Reservation Office
ARP-Aerospace Recommended Practice
ARP-Airport Reference Point
ARRA-American Recovery Reinvest Act
ARSA-Airport Service Radar Area
ARSR-Air Route Surveillance Radar
ARTCC-Air Route Traffic Control Center
ARTS-Automated Radar Terminal System
ASAS-Aviation Safety Analysis System
ASC-AUTODIN Switching Center
ASCP-Aviation System Capacity Plan
ASD-Aircraft Situation Display
ASDA-Accelerate Stop Distance Available
ASLAR-Aircraft Surge Launch Recovery
ASM-Available Seat Mile
ASOS-Auto Surface Observation System
ASP-Arrival Sequencing Program
ASQP-Airline Service Quality Performance
ASR-Airport Surveillance Radar
ASTA-Airport Surface Traffic Automation
ASV-Airline Schedule Vendor
ASV-Annual Service Volume
AT-Air Traffic
ATA-Air Transport Association of America
ATAS-Airspace and Traffic Advisory Service
ATC-Air Traffic Control
ATCAA-Air Traffic Control Ass Airspace
ATCBI-Air Traffic Control Beacon Indicator
ATCCC-Air Traffic Control Comm Center
ATCO-Air Taxi Commercial Operator
ATCRB-Air Traffic Control Radar Beacon
ATCRBS-Air Traffic Cntl Radar Beacon Sys
ATCSCC-Air Traffic Control Sys Com Center
ATCT-Airport Traffic Control Tower
ATIS-Auto Terminal Information Service
ATISR-ATIS Recorder
ATM-Air Traffic Management
ATM-Asynchronous Transfer Mode
ATMS-Advanced Traffic Management Sys
ATN-Aeronautical Telecom Network
ATODN-AUTODIN Terminal (FUS)
ATOMS-Air Traffic Ops Management Sys
ATOVN-AUOTVON (Facility)
ATS-Air Traffic Service
ATSCCP-ATS Contingency Command Post
AUTODIN-DoD Automatic Digital Network
AUTOVON-DoD Automatic Voice Network
AVN-Aviation Standards Nat Field Office
AVON-AUTOVON Service
AWIS-Airport Weather Information
AWOS-Auto Weather Observation System
AWP-Aviation Weather Processor
AWPG-Aviation Weather Prod Generator
AWS-Air Weather Station
BANS-BRITE Alphanumeric System
BART-Billing Analysis Reporting Tool
BASIC-Basic Contract Observing Station
BASOP-Military Base Operations
BCA-Benefit/Cost Analysis
BCR-Benefit/Cost Ratio
BDAT-Digitized Beacon Data
BMP-Best Management Practices
BOC-Bell Operating Company
BPS-bits per second
BRI-Basic Rate Interface
BRITE-Bright Radar Ind Termin Equipment
BRL-Building Restriction Line
BUEC -.Back Up Emergency Comms
C/S/S/N-Capacity/Safety/Security/Noise
CAA-Civil Aviation Authority
CAA-Clean Air Act
CAB-Civil Aeronautics Board
CAC -.Citizen's Advisory Committee
CAD-Computer Aided Design
CARF-Central Altitude Reservation Facility
CASFO-Civil Aviation Security Office
CAT-Category
CAT-Clear Air Turbulence
CATS-Certific Activity Tracking System
CAU-Crypto Ancillary Unit
CBI-Computer Based Instruction
CC&O-Customer Cost and Obligation
CCC-Communications Command Center
CCCC-Staff Communications
CCCH-Central Computer Complex Host
CCS7-Comms Ch Signal-7 Net Interconnect
CCS-Combined Charging Standard
CCSD-Command Comm Service Designator
CCU-Central Control Unit
CD-Common Digitizer
CDR-Cost Detail Report
CDT-Controlled Departure Time
CDTI-Cockpit Display of Traffic Information
CENTX-Central Telephone Exchange
CEP-Capacity Enhancement Program
CEQ-Council on Environmental Quality
CERAP-Center Radar Approach Control
CERAP-Central Radar Approach
CERAP-Combined Center/Rdr App Control
CFC-Central Flow Control
CFCF-Central Flow Control Facility
CFCS-Central Flow Control Service
CFR-Code of Federal Regulations
CFWP-Central Flow Weather Processor
CFWU-Central Flow Weather Unit
CGAS-Coast Guard Air Station
CIP-Capital Improvement Plan
CLC-Course Line Computer
CLIN-Contract Line Item
CLT-Calculated Landing Time
CM-Commercial Service Airport
CNMPS-Min Nav Performance Spec Air
CNS-Consolidated NOTAM System
CNSP-Consolidated NOTAM Sys Processor
CO-Central Office
COE-U.S. Army Corps of Engineers
COMCO-Command Communications Outlet
CONUS-Continental United States
CORP-Private Corporation
CPE-Customer Premise Equipment
CPMIS-Consolidated Pers Man Info Sys
CRA-Conflict Resolution Advisory
CRDA-Converging Runway Display Aid
CRT-Cathode Ray Tube
CS/PP-Construction Safety Phasing Plan
CSA-Comms Service Authorization
CSIS-Centralized Storm Info System
CSO-Customer Service Office
CSR-Communications Service Request
CSS-Central Site System
CTA-Control Area
CTA-Controlled Time of Arrival
CTAF-Common Traffic Advisory Frequency
CTAS-Center Tracon Automation System
CTMA-Center Traffic Management Advisor
CUPS-Consolidated Uniform Payroll Sys
CVFR-Controlled Visual Flight Rules
CVTS-Compressed Video Trans Service
CW-Continuous Wave
CWA-Clean Water Act
CWSU-Central Weather Service Unit
CWY-Clearway
D-Controlling Dimension
DA-Decision Altitude/Decision Height
DA-Descent Advisor
DA-Direct Access
DABBS-DITCO Auto Bulletin Board System
DAIR-Direct Altitude and Identity Readout
DAR-Designated Agency Representative
DARC-Direct Access Radar Channel
dBA-Decibels A-weighted
DBCRC-Defen Base Closure Realign Comms
DBE-Disadvantaged Business Enterprise
DBMS-Data Base Management System
DBRITE-Digital Bright Rdr Ind Twr Equip
DC-Direct Current
DCA-Defense Communications Agency
DCAA-Dual Call, Automatic Answer Device
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 Environ Impact Statement
DEP-Departure
DEWIZ-Distance Early Warning Ident Zone
DF-Direction Finder
DFAX-Digital Facsimile
DFI-Direction Finding Indicator
DGPS-Differential Global Pos Satellite
DH-Decision Height
DID-Direct Inward Dial
DIP-Drop and Insert Point
DIRF-Direction Finding
DITCO-Def Info Techno Contract Agency
DME-Distance Measuring Equipment
DME/P -.Pre Distance Measuring Equipment
DMN-Data Multiplexing Network
DNL Z Day/Night Equivalent Sound Level
DoD-Department of Defense
DOD-Direct Outward Dial
DOI-Department of Interior
DOS-Department of State
DOT-Department of Transportation
DOTCC-Dep of Transport Computer Ctr
DOTS-Dynamic Ocean Tracking System
DSCS-Digital Satellite Compression Service
DSUA-Dynamic Special Use Airspace
DTS-Dedicated Transmission Service
DUAT-Direct User Access Terminal
DVFR-Day Visual Flight Rules
DVFR-Defense Visual Flight Rules
DVOR-Doppler VHF Omni Dir Range
DYSIM-Dynamic Simulator
E-MSAW-Route Auto Min Safe Alt Warning
EA-Environmental Assessment
EARTS-Route Auto Radar Tracking System
EB-Engineering Brief
ECOM-En Route Communications
ECVFP-Expand Charted Visual Flt Proced
EDCT-Expedite Departure Path
EFAS-En Route Flight Advisory Service
EFC-Expect Further Clearance
EFIS-Electronic Flight Information Systems
EIAF-Expanded Inward Access Features
EIS-Environmental Impact Statement
ELT-Emergency Locator Transmitter
ELWRT-Electrowriter
EMAS-Engineered Materials Arresting Sys
EMPS-En Route Maintenance Processor Sys
EMS-Environmental Management System
ENAV-En Route Navigational Aids
EOF-Emergency Operating Facility
EPA-Environmental Protection Agency
EPS-Engineered Performance Standards
EPSS-Enhanced Packet Switched Service
ERAD-En Route Broadband Radar
ESEC-Route Broadband Secondary Radar
ESF-Extended Superframe Format
ESP-En Route Spacing Program
ESS-Energy Storage System
ESYS-En Route Equipment Systems
ETA-Estimated Time of Arrival
ETE-Estimated Time En Route
ETG-Enhanced Target Generator
ETL-Effective Translational Lift
ETMS-Enhanced Traffic Management Sys
ETN-Electronic Telecoms Network
EV-Electric Vehicle
EVAS-Enhanced Vortex Advisory System
EVCS-Emergency Voice Comms Sys
eVTOL-Electric Vertical Takeoff Landing
F&E-Facilities and Equipment
FAA-Federal Aviation Administration
FAAAC-FAA Aeronautical Center
FAACIS-FAA Communications Info Sys
FAATC-FAA Technical Center
FAATSAT-FAA Telecomma Satellite
FAC-Facility
FAF-Final Approach Fix
FAP-Final Approach Point
FAPM-FTS Associate Program Manager
FAR-Federal Aviation Regulation
FAST-Final Approach Spacing Tool
FATO-Final Approach and Take Off Area
FAX-Facsimile Equipment
FBO-Fixed Base Operator
FBS-Fall Back Switch
FC-Failure Condition
FCC-Federal Communications Commission
FCLT-Freeze Calculated Landing Time
FCOM-FSS Radio Voice Communications
FCPU-Facility Central Processing Unit
FDAT-Flight Data Entry Printout
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
FDP-Flight Data Processing
FED-Federal
FEIS-Final Environ Impact Statement
FEP-Front End Processor
FFAC-From Facility
FIFO-Flight Inspection Field Office
FIG-Flight Inspection Group
FINO-Flight Inspection National Field
FIPS-Federal Info Publication Standard
FIR-Flight Information Region
FIRE-Fire Station
FIRMR-Federal Info Resource Manage Reg
FL-Flight Level
FLOWSIM-Traffic Flow Planning Simulation
FMA-Final Monitor Aid
FMF-Facility Master File
FMIS-FTS2000 Management Info Sys
FMS-Flight management System
FNMS-FTS2000 Network Manage System
FOD-Foreign Object Debris
FOIA-Freedom Of Information Act
FONSI-Finding of No Significant Impact
FP-Flight Plan
FRC-Request Full Route Clearance
FSAS-Flight Service Automation System
FSDO-Flight Standards District Office
FSDPS-Flight Service Data Processing Sys
FSEP-Facility/Service/Equipment Profile
FSP-Flight Strip Printer
FSPD-Freeze Speed Parameter
FSS-Flight Service Station
FSSA-Flight Service Station Auto Service
FSTS-Federal Secure Telephone Service
FSYS-Flight Service Station Equipment Sys
FTS2000-Federal Telecomms System 2000
FTS-Federal Telecommunications System
FUS-Functional Units or Systems
FWCS-Flight Watch Control Station
GA-General Aviation
GAA-General Aviation Activity
GAAA-General Aviation Activity Avionics
GADO-General Aviation District Office
GCA-Ground Control Approach
GIS-Geographic Information System
GNAS-General National Airspace System
GNSS-Global Navigation Satellite System
GOES-Geostationary Op Enviro Satellite
GOESF-GOES Feed Point
GOEST-GOES Terminal Equipment
GPRA-Govern Performance Results Act
GPS-Global Positioning System
GPWS-Ground Proximity Warning System
GRADE-Graphical Airspace Design Environ
GS-Glide Slope Indicator
GSA-General Services Administration
GSE-Ground Support Equipment
H-Non Dir Radio Homing Beacon (NDB)
HAA-Height Above Airport
HAL-Height Above Landing
HARS-High Altitude Route System
HAT-Height Above Touchdown
HAZMAT-Hazardous Material
HCAP-High Capacity Carriers
HDME-NDB Distance Measuring Equipment
HDQ-FAA Headquarters
HELI-Heliport
HF-High Frequency
HH-NDB, 2kw or More
HI/EFAS-High Altitude EFAS
HLDC-High Level Data Link Control
HOGE-Hover Out of Ground Effect
HOV-High Occupancy Vehicle
HPZ-Heliport Protection Zone
HSI-Horizontal Situation Indicators
HUD-Housing and Urban Development
HWAS-Hazardous Flight Weather Advisory
Hz-Hertz
I/AFSS-International AFSS
IA-Indirect Access
IAF-Initial Approach Fix
IAP-Instrument Approach Procedures
IAPA-Instrument App Procedures Auto
IBM-International Business Machines
IBP-International Boundary Point
IBR-Intermediate Bit Rate
ICAO-Internat Civil Aviation Organization
ICSS-International Comms Switching Sys
IDAT-Interfacility Data
IEC-Internat Electrotechnical Commission
IEEE-Institute Elec Electronics Engeneers
IF-Intermediate Fix
IFC-International Fire Code
IFCP-Interfacility Comms Processor
IFDS-Interfacility Data System
IFEA-In-- Flight Emergency Assistance
IFO-International Field Office
IFR-Instrument Flight Rules
IFSS-International Flight Service Station
ILS-Instrument Landing System
IM-Inner Marker
IMC-Instrument Meteorological Conditions
INM-Integrated Noise Model
INS-Inertial Navigation System
IRMP-Info Resources Management Plan
ISDN-Integrated Services Digital Network
ISMLS-Interim Stan Microwave Landing Sys
ISO-Internat Organization Standardization
ITI-Interactive Terminal Interface
IVRS-Interim Voice Response System
IW-Inside Wiring
Kbps-Kilobits Per Second
Khz-Kilohertz
KVDT-Keyboard Video Display Terminal
LAA-Local Airport Advisory
LAAS-Low Altitude Alert System
LABS-Leased A B Service
LABSC-LABS GS 200 Computer
LABSR-LABS Remote Equipment
LABSW-LABS Switch System
LAHSO-Land and Hold Short Operation
LAN-Local Area Network
LAP-Landing Area Proposal
LATA-Local Access and Transport Area
LAWRS-Ltd Aviation Weather Report Sys
LBA-Load-Bearing Area
LCF-Local Control Facility
LCN-Local Communications Network
LDA-Landing Directional Aid
LDA-Localizer Directional Aid
LDIN-Lead in Lights
LDR-Landing Distance Required
LEC-Local Exchange Carrier
LED-Light Emitting Diode
LF-Low Frequency
LINCS-Leased Interfacility NAS Comms Sys
LIS-Logistics and Inventory System
LLWAS-Low Level Wind Shear Alert System
LM/MS-Low/Medium Frequency
LMM-Locator Middle Marker
LMS-LORAN Monitor Site
LOB-Line of Business
LOC-Localizer
LOCID-Location Identifier
LOI-Letter of Intent
LOM-Compass Locator at Outer Marker
LORAN-Long Range Aid to Navigation
LPV-Lateral Prec Perform Vertical Guidance
LRCO-Limited Remote Comms Outlet
LRNAV-Long Range Navigation
LRR-Long Range Radar
MAA-Maximum Authorized Altitude
MALS-Medium Intensity App Lighting Sys
MALSF-MALS with Sequenced Flashers
MALSR-MALS Runway Align Ind Lights
MAP-Maintenance Automation Program
MAP-Military Airport Program
MAP-Missed Approach Point
MAP-Modified Access Pricing
Mbps-Megabits Per Second
MCA-Minimum Crossing Altitude
MCAS-Marine Corps Air Station
MCC-Maintenance Control Center
MCL-Middle Compass Locater
MCS-Maintenance and Control System
MCS-Megawatt Charging System
MDA-Minimum Descent Altitude
MDT-Maintenance Data Terminal
MEA-Minimum En Route Altitude
METI-Meteorological Information
MF-Middle Frequency
MFJ-Modified Final Judgment
MFT-Meter Fix Crossing Time/Slot Time
MHA-Minimum Holding Altitude
Mhg-MegHERTZ
MIA-Minimum IFR Altitudes
MIDO-Manufacturing Inspec District Office
MIS-Meteorological Impact Statement
MISC-Miscellaneous
MISOManufacturing Inspect Satellite Office
MIT-Miles In Trail
MITRE-Mitre Corporation
MLS-Microwave Landing System
MM-Middle Marker
MMC-Maintenance Monitoring Console
MMS-Maintenance Monitoring System
MNPS-Min Navigation Performance Spec
MNPSA-Min Nav Perform Spec Airspace
MOA-Memorandum of Agreement
MOA-Military Operations Area
MOCA-Min Obstruction Clearance Altitude
MODE C-Altitude Reporting Mode Sec Rdr
MODE C-Altitude-- Encoded Beacon Reply
MODE S-Mode Select Beacon System
MOU-Memorandum of Understanding
MPO-Metropolitan Planning Organization
MPS-Maintenance Processor Subsystem
MPS-Master Plan Supplement
MRA-Minimum Reception Altitude
MRC-Monthly Recurring Charge
MSA-Minimum Safe Altitude
MSAW-Minimum Safe Altitude Warning
MSL-Mean Sea Level
MSN-Message Switching Network
MTCS-Modular Terminal Comms Sys
MTI-Moving Target Indicator
MTOW-Maximum Takefoff Weight
MUX-Multiplexor
MVA-Minimum Vectoring Altitude
MVFR-Marginal Visual Flight Rules
NAAQS-Nat Ambient Air Quality Standards
NADA-NADIN Concentrator
NADIN-Nat Airspace Data Interchange Net
NADSW-NADIN Switches
NAILS-Nat Airspace Integrated Logist Supp
NAMS-NADIN IA
NAPRS-Nat Airspace Perform Report Sys
NAS-National Airspace System
NAS-Naval Air Station
NASDC-National Aviation Safety Data
NASP-National Airspace System Plan
NASPAC-N Airspace Sys Perfor Analys Cap
NATCO-Nat Comms Switching Center
NAVAID-Navigational Aid
NAVMN-Navigation Monitor and Control
NAWAU-Nat Aviation Weather Advis Unit
NAWPF-Nat Aviation Weather Proces Fac
NCAR-Nat Center Atmos Res Boulder, CO
NCF-National Control Facility
NCIU-NEXRAD Comms Interface Unit
NCP-Noise Compatibility Program
NCS-National Communications System
NDB-NonDirectional Radio Homing Beacon
NDNB-NADIN II
NEC-National Electric Code
NEM-Noise Exposure Map
NEMSPA-National EMS Pilots Association
NEPA-National Environmental Policy Act
NEXRAD-Next Generation Weather Radar
NFAX-National Facsimile Service
NFDC-National Flight Data Center
NFIS-NAS Facilities Information System
NFPA-National Fire Protection Association
NI-Network Interface
NICS-Nat Interfacility Comms System
NM-Nautical Mile
NMAC-Near Mid Air Collision
NMC-National Meteorological Center
NMCE-Network Monitoring Control Equip
NMCS-Network Monitoring Control System
NOAA-Nat Oceanic Atmospheric Admin
NOC-Notice Of Completion
NOTAM-Notice to Air Missions
NPDES-Nat Pollutant Discharge Elimin Sys
NPE-Non-primary Airport Entitlement
NPIAS-National Plan Integrated Airport Sys
NPRM-Notice of Proposed Rulemaking
NR-Non Rulemaking
NRA-Non Rulemaking Airport
NRC-Non Recurring Charge
NRCS-Nat Radio Communications Systems
NSAP-National Service Assurance Plan
NSSFC-Nat Severe Storms Forecast Center
NSSL-Nat Severe Storms Laboratory
NSWRH-NWS Regional Headquarters
NTAP-Notices To Airmen Publication
NTP-National Transportation Policy
NTSB-Nat Transportation Safety Board
NTZ-No Transgression Zone
NWS-National Weather Service
NWSR-NWS Weather Excluding NXRD
NXRD-Advanced Weather Radar System
OAG-Official Airline Guide
OALT-Operational Acceptable Level Traffic
OAW-Off Airway Weather Station
ODAL-Omnidirectional App Lighting Sys
ODAPS-Oceanic Display Processing Station
OEI-One Engine Inoperative
OEM-Original Equipment Manufacturer
OEP-Operation Evolution Plan Partnership
OFA-Object Free Area
OFDPS -.Offshore Flight Data Process Sys
OFT-Outer Fix Time
OFZ-Obstacle Free Zone
OM-Outer Marker
OMB -.Office of Management and Budget
ONER-Oceanic Navigational Error Report
OPLT-Operational Acceptable Level Traffic
OPSW-Operational Switch
OPX-Off Premises Exchange
ORD-Operational Readiness Demonstration
OTR-Oceanic Transition Route
OTS-Organized Track System
PABX -.Private Automated Branch Exchange
PAD-Packet Assembler/Disassembler
PAL -.Planning Activity Level
PAM-Peripheral Adapter Module
PAPI-Precision Approach Path Indicator
PAR-Precision Approach Radar
PAR-Preferential Arrival Route
PATWAS-Pilot Auto Phone Wx Answer Serv
PBB-Passenger Boarding Bridge
PBCT-Proposed Boundary Crossing Time
PBRF-Pilot Briefing
PBX-Private Branch Exchange
PCA-Positive Control Airspace
PCC-Portland Cement Concrete
PCM-Pulse Code Modulation
PDAR -.Preferential Arrival/Departure Route
PDC-Pre-Departure Clearance
PDC-Program Designator Code
PDN -.Public Data Network
PDR-Preferential Departure Route
PFC-Passenger Facility Charge
PGP-Planning Grant Program
PIC-Principal Interexchange Carrier
PIDP-Program Indicator Data Processor
PIM-Preformed Thermoplastic Markings
PIREP-Pilot Weather Report
PMS-Program Management System
POLIC-Police Station
POP -.Point Of Presence
POT -.Point Of Termination
PPIMS-Pers Property Info Management Sys
PR-Primary Commercial Service Airport
PRI -.Primary Rate Interface
PRM-Precision Runway Monitor
PSDN-Public Switched Data Network
PSN-Packet Switched Network
PSS-Packet Switched Service
PSTN-Public Switched Telephone Network
PTC-Presumed-to-Conform
PUB-Publication
PUP-Principal User Processor
PVC-Permanent Virtual Circuit
PVD-Plan View Display
QA-Quality Assurance
RA-Risk Assessment
RAIL-Runway Alignment Indicator Lights
RAPCO-Radar Approach Control (USAF)
RAPCON-Radar Approach Control (FAA)
RATCC-Radar Air Traffic Control Center
RATCF-Radar Air Traffic Control Facility
RBC-Rotating Beam Ceilometer
RBDPE-Radar Beacon Data Process Equip
RBSS-Radar Bomb Scoring Squadron
RCAG-Remote Comms Air/Ground
RCC-Rescue Coordination Center
RCCC-Regional Comms Control Centers
RCF-Remote Communication Facility
RCIU-Remote Control Interface Unit
RCL-Radio Communications Link
RCLR-RCL Repeater
RCLT-RCL Terminal
RCO-Remote Communications Outlet
RCU-Remote Control Unit
RDAT-Digitized Radar Data
RDP-Radar Data Processing
RDSIM-Runway Delay Simulation Model
REIL-Runway End Identification Lights
RF-Radio Frequency
RIWS-Runway Incursion Warning Systems
RL-General Aviation Reliever Airport
RMCC-Remote Monitor Control Center
RMCF-Remote Monitor Control Facility
RML-Radio Microwave Link
RMLR-RML Repeater
RMLT-RML Terminal
RMM-Remote Maint Monitoring
RMMS-Remote Maint Monitoring Sys
RMS-Remote Monitoring Subsystem
RMSC-Rem Monitor Ssystem Concentrator
RNAV-Area Navigation
RNP-Required Navigation Performance
ROD-Record of Decision
ROSA-Report of Service Activity
ROT-Runway Occupancy Time
RP-Restoration Priority
RPC-Restoration Priority Code
RPG-Radar Processing Group
RPZ-Runway Protection Zone
RRH-Remote Reading Hygrothermometer
RRHS-Remote Reading Hydrometer
RRWDS-Remote Radar Weather Display
RRWSS-RWDS Sensor Site
RSA-Runway Safety Area
RSAT-Runway Safety Action Team
RSS-Remote Speaking System
RT & BTL-Rdr Tracking/Beacon Track Level
RT-Remote Transmitter
RTAD-Remote Twr Alphanumerics Display
RTCA-Radio Tech Commission Aeronautics
RTODR-Rejected Takeoff Distance Required
RTP-Regional Transportation Plan
RTR-Remote Transmitter/Receiver
RTRD-Remote Tower Radar Display
RTTF-Residential Through-the-Fence
RVR-Runway Visual Range
RW-Runway
RWDS-Remote Radar Weather Display
RWP-Real-time Weather Processor
S/S-Sector Suite
SAC-Strategic Air Command
SAE-SAE International
SAFI-Semi Automatic Flight Inspection
SALS-Short Approach Lighting System
SAS-Safety Assessment Screening
SATCOM-Satellite Communications
SAWRS-Supp Aviation Weather Report Sys
SBGP-State Block Grant Program
SCC-System Command Center
SCVTS-Switch Compres Video Telecom Ser
SDF-Simplified Direction Finding
SDF-Software Defined Network
SDIS-Switched Digital Integrated Service
SDP-Service Delivery Point
SDS-Switched Data Service
SEL-Single Event Level
SELF-Simplified Short Approach Lighting
SELF-System Sequenced Flashing Lights
SFAR38-Special Federal Aviation Reg 38
SHPO-State Historic Preservation Officer
SIC-Service Initiation Charge
SID-Standard Instrument Departure
SID-Station Identifier
SIGMET-Significant Meteorological Info
SIMMOD-Airport Airspace Simula Model
SIP-State Implementation Plan
SM-Statute Miles
SMGC-Surface Movement Guide Control
SMPS-Sector Maint Processor Subsystem
SMS-Safety Management System
SMS-Simulation Modeling System
SNR-Signal to Noise Ratio Also S/N
SOAR-System of Airports Reporting
SOC-Service Oversight Center
SOIR-Simult Ops On Intersecting Runways
SOIWR-Simult Ops Intersect Wet Runways
SRA-Safety Risk Assessment
SRAP-Sensor Receiver and Processor
SRM-Safety Risk Management
SRMD-Safety Risk Management Document
SSALF-SSALS with Sequenced Flashers
SSALR-Simplified Short App Lighting Sys
SSB-Single Side Band
STAR-Standard Terminal Arrival Route
STD-Standard
STMUX-Statistical Data Multiplexer
STOL-Short Takeoff and Landing
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
T1MUX-T1 Multiplexer
TAAS-Terminal Advance Automation Sys
TAC-Technical Advisory Committee
TACAN-Tactical Aircraft Control Navigation
TACR-TACAN at VOR, TACAN only
TAF-Terminal Aerodrome Forecast
TAF-Terminal Area Forecast
TARS-Terminal Automated Radar Service
TAS-True Air Speed
TATCA-Terminal Air Traffic Control Auto
TAVT-Terminal Airspace Visualization Tool
TCA-Terminal Control Area
TCA-Tower Control Airport
TCA-Traffic Control Airport
TCACCIS -.Transport Coordinator Auto Cmd
TCAS-Traffic Alert/Collision Avoidance Sys
TCC-DOT Transportation Computer Center
TCCC-Tower Control Computer Complex
TCE-Tone Control Equipment
TCLT-Tentative Calculated Landing Time
TCO-Telecoms Certification Officer
TCOM-Terminal Communications
TCS-Tower Communications System
TDLS-Tower Data-Link Services
TDMUX-Time Division Data Multiplexer
TDP-Takeoff Decision Point
TDPC-Touchdown/Positioning Circle
TDWR-Terminal Doppler Weather Radar
TELCO-Telephone Company
TELMS-Telecoms Management Sys
TERPS-Terminal Instrument Procedures
TFAC-To Facility
TH-Threshold
TIMS-Telecomms Info Management System
TIPS-Terminal Information Processing Sys
TL-Taxilane
TLOF-Touchdown and Liftoff Area
TMA-Traffic Management Advisor
TMC-Traffic Management Coordinator
TMCC-Terminal Information Processing Sys
TMCC-Traffic Manage Computer Complex
TMF-Traffic Management Facility
TML-Television Microwave Link
TMLI-Television Microwave Link Indicator
TMLR-Television Microwave Link Repeater
TMLT-Television Microwave Link Terminal
TMO-Telecommunications Management Op
TMP-Traffic Management Processor
TMS-Traffic Management System
TMSPS-Traffic Management Specialists
TMU-Traffic Management Unit
TNAV-Terminal Navigational Aids
TODA-Takeoff Distance Available
TODR-Takefoff Distance Required
TOF-Time Of Flight
TOFMS-Time of Flight Mass Spectrometer
TOPS-Telecomms Ordering Pricing System
TORA-Take-off Run Available
TR-Telecommunications Request
TRACAB-Terminal Rdr App Control Twr Cab
TRACON-Terminal Rdr App Control Facility
TRAD-Terminal Radar Service
TRB-Transportation Research Board
TRNG-Training
TSA-Taxiway Safety Area
TSA-Transport Security Administration
TSEC-Terminal Secondary Radar Service
TSP-Telecommunications Service Priority
TSR-Telecommunications Service Request
TSYS-Terminal Equipment Systems
TTMA-TRACON Traffic Manage Advisor
TTY-Teletype
TVOR-Terminal VHF Omnidirectional Range
TW-Taxiway
TWEB-Transcribed Weather Broadcast
TWR-Tower
TY-Type (FAACIS)
UAM-Urban Air Mobility
UAS-Uniform Accounting System
UHF-Ultra High Frequency
UL-Underwriters Laboratories
URA-Uniform Relocation Assistance
USAF-United States Air Force
USC-United States Code
USOC-Uniform Service Order Code
VALE-Voluntary Airport Low Emission
VASI-Visual Approach Slope Indicator
VDME-VOR Distance Measuring Equipment
VF-Voice Frequency
VFR-Visual Flight Rules
VGSI-Visual Glideslope Indicator
VHF-Very High Frequency
VLF-Very Low Frequency
VMC-Visual Meteorological Conditions
VNAV-Visual Navigational Aids
VNTSC-Volpe Nat Transport Sys Center
VON-Virtual On-net
VOR-VHF Omnidirectional Range
VOR/DME-VHF Distance Measuring Equip
VOR/DME-VHF Omnidirectional Range
VORTAC-VOR collocated with TACAN
VOT-VOR Test Facility
VP/D-Vehicle/Pedestrian Deviation
VRS-Voice Recording System
VSCS-Voice Switching and Control System
VTA-Vertex Time of Arrival
VTAC-VOR collocated with TACAN
VTOL-Vertical Takeoff and Landing
VTS-Voice Telecommunications System
WAAS-Wide Area Augmentation System
WAN-Wide Area Network
WC-Work Center
WCP-Weather Communications Processor
WECO-Western Electric Company
WESCOM-West Elect Satellite Comms
WHA-Wildlife Hazard Assessment
WHMP-Wildlife Hazard Management Plan
WMSC-Weather Message Switching Center
WMSCR-Wx Msg Switch Center Replace
WSCMO-Wx Serv Contract Meteorolog Obs
WSFO-Weather Service Forecast Office
WSMO-Wx Service Meteorolog Obs
WSO-Weather Service Office
WTHR-Weather
WX-Weather
ZEV-Zero Emissions Vehicle