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aviation acronyms 
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z
 
A
AAAE American Association of Airport Executives
ACI Airport Council International
AAE Accredited Airport Executive
AAIA Airport & Airway Improvement Act
AAR Airport Acceptance Rate
ACARS ARINC Communication Addressing Reporting Systems
ACDO Air Carrier District Office
ADAP Airport Development Aid Program
ADC Aerospace Defense Command
ADCUS Advise Customs
ADP Airport Development Plan
ADZY Advisory
AEE FAA Office of Environment and Energy
AEM Area Equivalent Model
AF Airway Facilities
AFE Above Field Elevation (altitude)
AFFF Aqueous Film Forming Foam
AFIO Authorization For Interceptor Operations
AFM Arrival Flow Management
AFSS Automated Flight Service Station
AGL Above Ground Level (altitude)
AICUZ Air Installation Compatible Use Zones
AIM Airman's Information Manual
AIP Airport Improvement Program
AIRMET Airman's Meteorological information
ALJ Administrative Law Judge
ALNOT Alert Notice
ALP Airport Layout Plan
ALPA Air Line Pilots Association
ALS Approach Light System
ALTRV Altitude Reservation
AM Area Manager
AMIC Area Manager-In-Charge
AMTM Assistant Manager for Traffic Management
ANCEC Airport Noise Control and Environs Compatibility
ANCLUC Airport Noise Control and Land Use Compatibility
AOA At or Above
AOB At or Below
AOCI Airport Operators Council International
AOPA Aircraft Owners and Pilots Association
APREQ Approval Request
APP Approach Operation
ARAC Army Radar Approach Control Facility
ARC Airport Reference Code
ARFF Airport Rescue and Firefighting
ARINC Aeronautical Radio, Inc.
ARO Airport Reservations Office
ARP Airport Reference Point
ARSA Airport Radar Service Area
ARSR Air Route Surveillance Radar
ARTCC Air Route Traffic Control Center
ARTS Automated Radar Terminal System
AS Area Supervisor
ASD Aircraft Situation Display
ASDE Airport Surface Detection Equipment
ASOS Automated Surface Observation System
ASP Arrival Sequencing Program
ASQP Airline Service Quality Performance
ASR Aerial Surveillance Radar
ASRS Aviation Safety Reporting System
ASTM American Society for Testing Materials
AT Air Traffic
ATA Air Transport Association
ATC Air Traffic Control
ATCAA Air Traffic Control Assigned Airspace Area
ATCRBS Air Traffic Control Radar Beacon System
ATCS Air Traffic Control Specialist
ATCSCC Air Traffic Control System Command Center
ATCT Air Traffic Control Tower
ATD Regional Air traffic division
ATIS Automatic Terminal Information Service
ATM Air Traffic Manager
ATREP Air Traffic Representative
ATRS Automated Thrust Restoration System (on aircraft)
AUTOVON Automatic Voice Switching Network
AVGAS Aviation Gasoline
AVI Aviation
AWB Air Waybill
AWOS Automated Weather Observation System
AWS Airway Science Curriculum
B

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B.R. Bankruptcy Court Reporter
BRITE Bright Radar Indicator Tower Equipment
BRL Building Restriction Lines
BT Basic Transport
BTU British Thermal Unit
BU Basic Utility
C
CAA Civil Aeronautics Administration (or Authority)
CAB Civil Aeronautics Board
Cal App California Appeals Court Reporter
CAP Civil Air Patrol
CARF Central Altitude Reservation Function
CAS Calibrated Airspeed (corrected indicated airspeed)
CAT Clear Air Turbulence or Category
CATI Category I Instrument Landing System (uses MALSR)
CATII Category II Instrument Landing System (uses ALSF-2)
CATIII Category III Instrument Landing System (uses ALSF-2)
CBD Central Business District
CBO Congressional Budget Office
CBR California Bearing Ratio
CBRA Coastal Barriers Resources Act
CCH Commerce Clearing House
CD Clearance Delivery
CDT Controlled Departure Time
CDTI Cockpit Display of Traffic Information
CE Categorical Exclusion
CEO Chief Executive Officer
CEQ Council on Environmental Quality
CERAP Combined Center/RAPCON
CFCF Central Flow Control Function
CFR Code of Federal Regulations, or Crash Fire Rescue
CFS Cubic Feet Per Second
CFW Center Field Wind
CFWSU Central Flow Weather Service Unit
CIC Controller in Charge
CIP Capital Investment Plan
CIR Circuit flight operation
CL Centerline Lights
CLUZ Compatible Land Use Zones
CMA Calcium Magnesium Acetate
CNEL California Noise Equivalent Level
CNR Composite Noise Rating
CONUS Continental/Contiguous/Conterminous United States
CPA Closest Point of Approach
CRDA Converging Runway Display Aid
CSS Checkpoint Security Supervisor
CTA Controlled Time of Arrival
CWA Center Weather Advisory
CWSU Center Weather Service Unit
CY Cubic Yards
CZMA Coastal Zone Management Act
CZMP Coastal Zone Management Program
D

 

D/C Demand/Capacity Ratio
dB Decibel
dBA Decibels on the A Weighted Scale
DCIA Dependent Converging Instrument Approaches
DEDS Data Entry Display System
DEIS Draft Environmental Impact Statement
DEP Departure Operation
DF Direction Finder
DFM Departure Flow Management
DME Distance Measuring Equipment
DNL Day-Night Average Sound level (also Ldn)
DOD Department of Defense
DOE Department of Energy
DOI Department of the Interior
DOT Department of Transportation
DSP Departure Sequencing Program

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E
EA Environmental Assessment
EAA Experimental Aircraft Association
EAC Expect Approach Clearance
EAS Essential Air Service
EDCT Expect Departure Clearance Time
EDT Estimated Time of Departure
EFAS En route Flight Advisory Service
EFF Effective
EFM En route Flow Management
EIAR Environmental Impact Assessment Report
EIR Environmental Impact Report
EIS Environmental Impact Statement
ELT Emergency Locator Beacon
EOF Emergency Operations Facility
EPA Environmental Protection Agency
EPNdB Effective Perceived Noise Decibel
EPNL Effective Perceived Tone-Corrected Noise Level
epr engine pressure ratio
ESP En route Spacing Program
EST Estimate
ETE Estimated Time En route
ETMS Enhanced Traffic Management System
ETN Electronic Tandem Network
F

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F&E Facilities and Equipment
FAA Federal Aviation Administration (or Agency)
FAR Federal Aviation Regulation
FBO Fixed Base Operator
FCC Federal Communications Commission
FDIO Flight Data Input/Output
FEIS Final Environmental Impact Statement
FEMA Federal Emergency Management Agency
FF Federal Finding
FHWA Federal Highway Administration
FIA Federal Flood Insurance Administration
FIFO Flight Inspection Field Office
FIRM Flood Insurance Rate Map
FIS Federal Inspection Services
FLT Flight(s)
FMA Final Monitor Aid
FMS Flight Management System
FO Forested Land
FOC Foreign Object Damage (or debris)
FONSI Finding of No Significant Impact
FPPA Farmland Protection Policy Act
FS Flight Standards Division, FAA
FSDO Flight Standards District Office
FSF Flight Safety Foundation
FSS Flight Service Station
FTS Federal Telecommunications System
FW Flight Watch
FWCS Flight Watch Control Station
G

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GA General Aviation
GADO General Aviation District Office
GAMA General Aviation Manufacturers Association
GAO General Accounting Office
GC Ground Control
GCA Ground Controlled Approach
GPS Global Positioning System
GR General Transport
GU General Utility
H

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HAI Helicopter Association International
HC Hydrocarbons
HIRL High Intensity Runway Lights
HNM Helicopter Noise Model
hp horsepower
HUD Department of Housing and Urban Development
I

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IATA International Air Transport Association
IATSC International Telecommunications Switching Center
ICAA International Civil Airports Association
ICAO International Civil Aviation Organization
IDENT Aircraft Identification
IFR Instrument Flight Rules
IFSS International Flight Service Station
ILS Instrument Landing System
IM Inner Marker
IMC Instrument Meteorological Conditions
IMF Internal Flow Management
in-Hg inches of mercury
INFO Information
INM Integrated Noise Model
INREQ Information Request
IOT Input/Output Terminal
J

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K
KW Kilowatt
L
LAE Symbol for SEL --- A-weighted sound exposure level (dB)
LAMAX Maximum A-Level (noise metric)
LAWRS Limited Aviation Weather Reporting Station
LC Local Control
LDA Localizer Directional Aid or Landing Distance Available
LDIN Lead-In Lights
LDN Day-Night Average Sound Level (also DNL)
LEO Law Enforcement Officer
LEPN Symbol for EPNL --- perceived sound exposure level (dB)
LEQ Equivalent Sound Level
LIRL Low Intensity Runway Lights
LIRS Low Impact Resistance Supports
LOA Letter of Agreement
LOC Localizer
LRR Long Range Radar
LTD Limited
LTFC Landing Traffic
LTO Landing and Takeoff Cycle
LUG Land Use Guidance
M

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MALS Medium Intensity Approach Lighting System
MALSF Medium Intensity Apporach Lighting System with Sequenced Flashers
MALSR Medium Intensity Approach lighting System with Runway Alignment Indicator Lighting System
MBE Minority Business Enterprise
MBO Management By Objective
MCA Magnesium Calcium Acetate
MEA Minimum En route IFR Altitude
MGD Million Gallons per Day
MGW Maximum Gross Weight
MII Majority-In-Interest
MINIT Minutes-in-trail
MIRL Medium Intensity Runway Lights
MIS Meteorological Impact Statement
MIT Miles-In-Trail
MITL Medium Intensity Taxiway Lights
MLS Microwave Landing System
MM Middle Marker
mm-Hg millimeters of mercury
MMCC Maintenance Monitor Coordination Center
MOA Military Operations Area
MOS Military Operations Specialist
MSA Metropolitan Statistical Area
MSAW Minimum Safe Altitude Warning
MSL Mean Sea Level
MTI Moving Target Indicator
MVA Minimum Vectoring Altitude
N

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NAAQS National Ambient Air Quality Standards
NACA National Air Carrier Association
NADP Noise Abatement Departure Profile
NAFEC National Aviation Facilities Experimental Center
NAMFAC National Airspace Management Facility
NAPRS National Airspace Performance Reporting System
NAS National Airspace System
NASAO National Association of State Aviation Officials
NASP National Airport System Plan
NATA National Air Transportation Association
NAVAID Navigation Aid
NBAA National Business Aircraft Association
NCDC National Climatic Data Center
NCP Noise Compatibility Program
NDB Nondirectional Beacon
NEF Noise Exposure Forecast
NEM Noise Exposure Map
NEPA National Environmental Policy Act
NEXRAD Next Generation Radar
NFDC National Flight Data Center
NLR Noise Level Reduction
NM Nautical Miles
NOAA National Oceanic and Atmospheric Administration
NORAD North American Aerospace Defense Command
NO2 National Ocean Service
NOTAM Notice to Airmen
NOx Nitrogen Oxides
NPD Noise-power-distance
NPDES National Pollutant Discharge Elimination System
NPIAS National Plan of Integrated Airport Systems
NPRL No Parallel
NPRM Notice of Proposed Rule Making
NTIS National Technical Information Service
NTSB National Transportation Safety Board
NTZ No Transgression Zone
NWS National Weather Service
O

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O&D Origination-Destination
O&M Operations and Maintenance
OAG Official Airline Guide
OALT Operational Acceptable Levels of Traffic
ODALS Omnidirectional Airport Lighting System
ODAPS Oceanic Display and Planning System
OFA Object Free Area
OFZ Object Free Zone
OM Outer Marker
OMB Office of Management and Budget
OPSNET Operations Network
OVF Overflight operation
P

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PAC Planning Advisory Committee
PACE Program for Airport Capacity Efficiency
PAPI Precision Approach Path Indicator
PAR Precision Approach Radar
PC&N Public Convenience and Necessity
PCS Power Conditioning System
PFC Passenger Facility Charge
PGP Planning Grant Program
PM Particulate Matter
PNdB Perceived Noise Decibel
PNLTM Maximum Perceived Tone-Corrected Noise Level
PPBS Planning-Programming-Budgeting -Systems
PRM Precision Runway Monitor
psi Pounds Per Square Inch
Q

QATS Quality Assurance and Training Specialist
R

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R/W Runway
RAA Regional Airline Association
RADLO Regional Air Defense Liaison Officer
RAILS Runway Alignment Indicator Lighting System
RALT Regardless of Altitude
RAPCON Radar Approach Control Facility (USAF)
RATCF Radar Air Traffic Control Facility (Navy)
RCC Rescue Coordination Center
RCLS Runway Centerline Light system
REIL Runway End Identifier Lights
RNAV Area Navigation
ROC Regional Operations Center
ROD Record of Decision
RODA Regardless of Destination Airport
ROFA Runway Object Free Area
ROT Runway Occupancy Time
RPZ Runway Protection Zone
RRTE Re-route
RSA Runway Safety Area
RSTN Restriction(s)
RSU Runway Supervisory Unit
RT/R Remote Transmitter/Receiver
RTCA Radio Technical Commission for Aeronautics
RVR Runway Visual Range
RVV Runway Visibility Value
S
SAC Strategic Air Command
SAFI Semi-Automatic Flight Inspection
SAR Search and Rescue
SCATANA Security Control of Air Traffic and Navigational
SCS U.S. Soil Conservation Service
SCTR Sector
SDF Simplified directional facility
SE Systems Engineer
SEL Sound Exposure Level
SHPO State Historic Preservation Officer
SIC Screener-In-Charge
SIGMET Significant Meteorological information
SIP State Implementation Plan
SLUCM Standard Land Use Coding System
SMSA Standard Metropolitan Statistical Area
SO Southern Reporter
SO2 Sulfur Oxides
SPCC Spill Prevention Control and Countermeasure
SR Service Road
STMC-C Supervisory Traffic Management Coordinator (ARTCC)
STMC-N Supervisory Traffic Management Coordinator (ATCSCC)
STMP Sector Traffic Management Program
STOL Short Take Off and Landing
SVFR Special Visual Flight Rules
SWAP Severe Weather Avoidance Plan
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TA Time-Above (noise metric)
TACAN Tactical Air Navigation
TAF Terminal Area Forecast
TAS True Airspeed
TCA Terminal Control Area
TCAS Traffic Alert and Collision Avoidance System
TCH Threshold Crossing Height
TDD Telecommunication Devices for the Deaf
TDWR Terminal Doppler Weather Radar
TDZ Touchdown Zone
TDZL Touchdown Zone Lights
TELCO Telephone Company
TERPs Thermal Instrument Procedures
TGO Touch-and-go Operation
TM Traffic Management
TMC Traffic Management Coordinator
TMC-C Traffic Management Coordinator (TMU)
TMC-N Traffic Management Coordinator (ATCSCC)
TMC-T Traffic Management Coordinator (Terminal)
TMF Traffic Management Function
TMS Traffic Management System
TMU Traffic Management Unit
TNA Thermal Neutron Analysis (or Activator)
TODA Takeoff Distance Available
TORA Takeoff Run Available
TPHP Typical Peak Hour Passengers
TRACAB Terminal Radar Approach Control in Tower Cab
TRACON Terminal Radar Approach Control
TRSA Terminal Radar Service Area
TVOR Very High Frequencey Omnirange located on an airport
TWEB Transcribed Weather Broadcast
U

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UAA University Aviation Association
UAL United Air Lines
UHF Ultra High Frequency
ULSL United States Supreme Court Reporter
UMTA Urban Mass Transportation Administration
USAF United States Air Force
USAR Uniform System of Accounts and Reports
USC U.S. Code
USCOE U.S. Army Corps of Engineers
USDA U.S. Department of Agriculture
USFWS U.S. Fish and Wildlife Service
USGS U.S. Geological Service
USN United States Navy
UST Underground Storage Tank
UTC Coordinated Universal Time
V

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VASI Visual Approach Slope Indicator
VFR Visual Flight Rules
VHF Very High Frequency
VMC Visual Meteorological Conditions
VNTSC Volpe National Transportation Systems Center (U.S. Dot)
VOR Very High Frequency Omnidirectional Range
VORTAC Collocated VOR and TACAN Navigational Aid
Vzf Zero-flaps minimum safe maneuvering speed
W

 

WC Weather Coordinator
WSFO Weather Service Forecast Officer
WSO Weather Service Office

X

X-BAND The frequency range between 8000 and 12500 MHz
XCVR Transceiver
XFR Transfer
XLTR Translater
XM External Master
XMIT Transmit
XMITR Transmitter
XPD ATC Transponder (also XPDR, XPNDR, TPR)
XTK Crosstrack (cross track error)
Y

YSAS

Yaw Stability Augmentation System
YD Yaw Damper
Z

Z Zulu

(GMTtime)
ZFW Zero Fuel Weight
ZNY New York Air Route Traffic Control Cente

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