F
F Cleared to Fix
F Fahrenheit
F Flight Inspection
F&E Facilities and Equipment
FA Area Forecast
FA CENTER Aviation Area Forecast Center
FA Final Approach
FA Fuel Advisory
FAA Federal Aviation Administration
FAA For an Approach to
FAA1 SafeAir One Federal Aviation Administration Administrator
FAA2 SafeAir Two Federal Aviation Administration Deputy Administrator
FAAAC FAA Aeronautical Center
FAACIS FAA Communications Information System
FAAP Federal Aid to Airports Program
FAAS Team 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
FAC Final Approach Course
FAC Flight Augmentation Computer
FACA Area Forecast for Caribbean
FACF Facility Chief
FACSFAC Fleet Area Controlled and Surveillance Facility
FACUTL Facility Utilization System
FAD Fuel Advisory Departure
FADE FAA/Airline Data Exchange
FADEC Full Authority Digital Engine Control
FAE Fuel-Air Explosive
FAF Final Approach Fix
FAFAB FSS assumes flight plan area and Service B
FAGX Area Forecast for Gulf of Mexico
FAH Fahrenheit
FAIRS Federal Aircraft Management Information System
FAL Facilitation of International Air Transport
FAM Familiar or Familiarization
FAMAE Following Amendment Authorized Effective
FAMIS Federal Air Marshal Information System
FAMOS Floating-gate Avalanche-injection Metal Oxide Silicon Semiconductor
FANS Future Air Navigation System
FAO Finish All Over
FAP Final Approach Point
FAPM FTS2000 Associate Program Manager
FAQ Frequently Asked Questions
FAR Federal Aviation Regulations
FARM Fielded Automation Requirements Management
FASC FAA Aviation Safety Center
FAST Final Approach Spacing Tool
FATFL FSS Assumes control of tower frequencies and lights
FAWP Final Approach Waypoint
FAWS Flight Advisory Weather Service
FAX Facsimile
FAX Facsimile Equipment
FB Fly-by
FBL Fly by Light
FBO Fixed Base Operator
FBS Fall Back Switch
FBW Fly by Wire
FBWP Fly by Way Point
FC Funnel Cloud
FCA Frequency Change Approved
FCC Federal Communications Commission
FCC Flight Control Computer
FCES Fight Control Electronic System
FCEU Flight Control Electric Unit
FCFSS Contract Flight Service Station
FCL Flight Crew Licensing
FCLT Freeze Calculated Landing Time
FCM Flight Schedule Monitor
FCO Facility Coordination Officer
FCOM FSS Radio Voice Communications
FCPU Facility Central Processing Unit
FCR Field Condition Report
FCST Forecast
FCSTD Forecasted
FCSTG Forecasting
FCSTR Forecaster
FCSTS Forecasts
FCT Federal Contract Tower
FCTA Flow Control Time of Arrival
FCU Flight Control Unit
FCWOS Contract Weather Observing Station
FD Flight Director
FD Winds and Temperature Aloft Forecast
FDAT Flight Data
FDAT Flight Data Entry and Printout (FDEP) and Flight Data Service
FDC Flight Data Center
FDDL Frequency Division Data Link
FDE Fault Detection and Exclusion
FDE Flight Data Entry
FDE Flight Deck Effect
FDEP Flight Data Entry and Printout
FDEP Flight Data Entry Panel
FDI Fault Detection and Isolation
FDIO Flight Data Input/Output
FDIOC Flight Data Input/Output Center
FDIOR Flight Data Input/Output Remote
FDIOR Flight Data Input/Output Repeater
FDM Frequency Division Multiplexing
FDMSAW Fully Digital Minimum Safe Altitude Warning
FDP Flight Data Processing
FDP/RDP Flight Data Processing/Radar Data Processing
FDPS Flight Data Processing System
FDR Federal Data Registry
FDR Flight Data Recorder
FDS Flight Display Screen
FDT Flight Deck Training Program
FE Flight Engineer
FED Federal
FED Field Effect Device
FEIS Final Environmental Impact Statement
FENKN Fuel Supply Unknown
FENTL Fuel Supply Until
FEODP Flight Edit and On-Demand Printing
FEP Front End Processor
FERS Facility and Equipment Reporting System
FET Field Effect Transistor
FEW Cloud coverage 1/8th to 1/4th of sky
FEXHA Fuel Supply Exhausted
FF Feeder Fault
FFAC From Facility
FFC For Further Clearance
FFLA Flexible Flight Level Assignment
FFLT Familiarization Flight
FFMN Fixed Federal Monitoring Network
FFP2 Free Flight Phase 2
FFR Fire fighting
FFRDC Federal Funded Research & Development Center
FG Fog
FGS Flight Guidance System
FGSB FSS Guarding Service B
FHP Friction Horsepower
FI/P Flight Information (Permanent)
FI/T Flight Information (Temporary)
FIAO Flight Inspection Area Office
FIBI Filed but Impracticable to Transmit
FIC Flight Information Center
FICO Flight Inspection Central Office
FICON Field Condition
FIDO Flight Inspection District Office
FIE Flight Instructor Examiner
FIFO First In First Out
FIFO Flight Inspection Field Office
FIFOH Flight Inspection Field Office High Altitude
FIFP Filed IFR Flight Plan
FIG Figure
FIG Flight Inspection Group
FIL Filament
FILG Filling
FILS Florescan Instrument Landing System
FIM Fault Isolation Monitoring
FIM Flight Information Manual
FINO Flight Inspection National Field Office
FINO Weather report will not be filed for transmission
FIO Flight Inspection Office
FIP Facility Improvement Program
FIPS Federal Information Publication Standard
FIR Flight Information Region
FIRAV First Available
FIRB Flight Information Region Boundary
FIRC Flight Instructor Refresher Clinic
FIRE Fire Station
FIRE Flight Instructor Renewal Examiner
FIRG Firing
FIRIV Arrival Report will be Filed With
FIRMR Federal Information Resource Management Regulation
FIRPS Flight Inspection Reports Processing System
FIS Flight Information Service
FIS Flight Instrument System
FISA Automated Flight Information Service
FISB Flight Information Services Broadcast
FIS-B Flight Information Services Broadcast
FISDL Flight Information Services Data Link
FISMA Federal Information Security Management Act of 2002
FITS FAA/Industry Training Standards
FL Flash Advisory
FL Flight Level
FLCTN Fluctuation
FLD Field
FLDS Flight Loads Data System
FLDST Flood Stage
FLG Falling
FLG Flashing
FLIDAP Flight Data Position
FLIP Flight Information Publication
FLIR Forward-Looking Infa-Red System
FLM Front Line Manager
FLORL Fluorescent Runway Lighting (floodlight system)
FLOWSIM Traffic Flow Planning Simulation
FLR Flares
FLRY Flurry
FLRYS Flurries
FLSA Fair Labor Standards Act
FLT Flight
FLTCK Flight Check
FLTO Flight Orders
FLTWO Flight Watch Outlet
FLUC Fluctuating
FLW Follow
FLWG Following
FLWIS Flood Warning Issued
FM Fan Marker
FM Frequency Modulation
FM From
FMA Final Monitor Aid
FMA Flight Mode Annunciator
FMAP Fan Marker Approach
FMC Flight Management Computer
FMC Frontline Managers Courses
FMCDU Flight Management Computer Display Unit
FMCS Flight Management Computer System
FMCU Flight Management Computer Unit
FMF Facility Master File
FMH Fan marker located with radio beacon
FMIS FTS2000 Management Information System
FMO Facility Management Office
FMO Frequency Management Officer
FMP Field Maintenance Party
FMS Financial Management System
FMS Flight Management System
FMT Format
FMU Flow Management Unit
FNA Final Approach
FNCTN Function
FNMS FTS2000 Network Management System
FNT Front
FNTGNS Frontogenesis
FNTL Frontal
FNTLYS Frontolysis
FNTS Fronts
FO Fly-Over
FOB Fuel on Board
FOC Flight Operations Center
FOD Foreign Object Damage
FOD Foreign Object Debris
FODTS Fiber-Optic Data Transmission System
FOI Fundamentals of Instruction
FOIA Freedom of Information Act
FOM Flight Operations Manual
FOMS Flight Operations Management System
FONE Telephone
FONSI Finding of No Significant Impact
FOQA Flight Operations Quality Assurance
FORNN Forenoon
FOTS Fiber Optics Transmission System
FOUO For Official Use Only
FOWP Fly-Over Waypoint
FP Flight Plan
FP Foreign Pilot
FPA Flight Plan Area
FPB Flight Progress Board
FPC Fuel Performance Computer
FPDI Flight Path Deviation Indicator
FPE Foreign Pilot Examiner
FPI Fluorescent Penetrate Inspection
FPL Filed Flight Plan
FPL Full Performance Level
FPLA Field-Program Logic Array
FPM Feet Per Minute
FPM Flap Position Module
FPN Fixed Pulse Radar Navigation Aid
FPNO Flight Plan Not Received
FPO Flight Procedures Office
FPP From Present Position
FPPS Federal Personnel Payroll System
FPR Fan Pressure Ratio
FPR Flight Plan Route
FPRC For Possible Reclearance
F-PROM Field-Programmable Read Only Memory
FPS Feet Per Second
FPS Military Primary Radar
FPWA Further Particulars When Available
FQT Frequent
FQTLY Frequently
FR Fuel Remaining
FRC Full Route Clearance
FRD Facility Reference Data
FRD Fix Radial Distance
FREQ Frequency
FRFAB FSS Returns Flight Plan Area and Service B
FRH Fly Runway Heading
FRM Form
FRMG Forming
FRMN Formation
FRMS Facility Roster Management System
FRNG Firing
FROPA Frontal Passage
FROSFC Frontal Surface
FRQ Frequent
FRSB FSS Returns Service B
FRST Rrost
FRTFL FSS Returns Control of Tower Frequencies and Lights
FRWF Forecast Wind Factor
FRZ Freeze
FRZ Flight Restricted Zone
FRZG Freezing
FRZLVL Freezing Level
FRZN Frozen
FS Flight Standards
FSAS Flight Service Automation System
FSB Flight Standardization Board
FSCAP Flight Safety Critical Aircraft Parts
FSDO Flight Standards District Office
FSDPS Flight Service Data Processing System
FSEP Facility, Service, and Equipment Profile
FSEU Flap/Slot Electronic Unit
FSFO Flight Standards Field Office
FSIAG Flight Service Information Area Group
FSIMS Flight Standards Information Management System
FSL Full Stop Landing
FSM Flight Schedule Monitor
FSNFO Flight Standards National Field Office
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
FT Feet
FT Filing Time
FT Foot
FT Terminal Weather Forecast
FTAR Following Transmitted as Received (Message handling)
FTD Flight Training Device
FTE Full Time Equivalent
FTHR Farther or further
FTHRD Feathered
FTI FAA Telecommunications Infrastructure
FTN FAA Tracking Number
FTP File Transfer Protocol
FTR Force Trim Release
FTS Federal Telecommunications System
FTS2000 Federal Telecommunications System 2000
FU Smoke
FURN Furnish
FUS Functional Units or Systems
FV Forward Visibility (miles)
FVC Frequency-to-Voltage Converter
FVFP Filed VFR Flight Plan
FVRBL Favorable
FW/SIFR Fixed Wing Special IFR
FW/SVFR Fixed Wing Special VFR
FWA Flight Watch Area
FWC Fleet Weather Central
FWC Flight Warning Computer
FWCS Flight Watch Control Station
FWD Forward
FWDC Forward Collect
FWP Flight Watch Point
FWRNG Fire Warning
FWS FAA Weather Service
FWS Flight Watch Specialist
FWU Flight Watch Unit
FY Fiscal Year
FYI For Your Information
FZ Supercooled/Freezing
FZDZ Freezing Drizzle
FZFG Freezing Fog
FZRA Freezing Rain
FZRANO Freezing Rain Sensor Not Available
G
G Gravity
G Green
G Gusts reaching (knots) (weather reports only)
G/A Ground to Air
GA General Aviation
GA Glide Angle
GA Go Ahead, resume sending (to be used in AFS as a procedure signal)
GA Go Around
GAA General Aviation Activity
GAAA General Aviation Activity and Avionics
GAASFET Gallium-ARsenic Field Effect Transistor
GADO General Aviation District Office
GALS Gallons
GAMA General Aviation Manufacturers Association
GAO General Accounting Office
GAO Government Accountability Office
GAO Government Accounting Office
GAPA Ground-to-Air Pilotless Aircraft
GBA Give Better Address
GBAS Ground-Based Augmentation System
GBL Government Bill of Landing
GBR Give Better Reference
GC Ground Control
GCA Ground Control Approach
GCB Generator Circuit Breaker
GCI Ground Control Intercept
GCO Ground Communication Outlet
GCR General Control Relay
GCU Generator Control Unit
GD General Dynamics
GDE Ground Delay Enhancements
GDP Ground Delay Program
GDPE Ground Delay Program Enhancements
GDPGM Ground Delay Program
GEN Generator
GENLY Generally
GENOT General Notice
GEO Geographic
GEO Geostationary Satellite
GEOREF Geographical Reference
GES Ground Earth Station
GETS Government Emergency Telecommunications Service
GETS Grievance Electronic Tracking System
GF Ground fog
GFA Graphical Forecasts for Aviation
GFE Government Furnished Equipment
GFET Gate Field Effect Transistor
GFM Government Furnished Materials
GFP Government Furnished Property
GFRP Glass Fiber Reinforced Plastic
GFS Global Forecast System
GHZ Gigahertz
GIC GPS Integrity Channel
GICG Glaze Icing
GIS Geographic Information System
GLD Glider
GLDR Glider
GLFALSK Gulf of Alaska
GLFCAL Gulf of California
GLFMEX Gulf of Mexico
GLFSTLAWR Gulf of St. Lawrence
GLONASS Global Orbiting Navigational Satellite System
GLS GNSS Landing System
GLS GBAS Landing System
GMC Ground Movement Chart
GMCC General National Airspace System Maintenance Control Center
GML Geography Markup Language
GMS Grants Management System
GMT Greenwich Mean Time
GNAS General National Airspace System
GND Ground
GND CON Ground Control
GNDCK Ground Check
GNDFG Ground Fog
GNDPWR Ground Power
GNDRET Ground Return
GNDSVC Ground Service
GNE Gross Navigation Error
GNSS Global Navigation Satellite System
GNTR Generator
GOES Geostationary Operational Environmental Satellite
GOESF GOES Feed Point
GOEST GOES Terminal Equipment
GOMP Gulf of Mexico Program
GOV Governor
GOVT Government
GP Glide Path
GPH Gallons Per Hour
GPI Ground Point of Intercept
GPO Government Printing Office
GPRA Government Performance and Results Act
GPS Global Positioning Satellite
GPS Global Positioning System
GPSW Gear Position Switch
GPU Ground Power Unit
GPWS Ground Proximity Warning System
GQA Get Quick Answer
GR Hail (Greater than 3/4”)
GRAD Gradient
GRADE Graphical Airspace Design Environment
GRADU Gradual
GRASS Grass landing area
GRBL Garble
GRBNKS Grand Banks
GRD Ground
GRDL Gradual
GRDLY Gradually
GRID Grid point values of processed meteorological data
GRT Great
GRTLKS Great Lakes
GRTLY Greatly
GRTR Greater
GRTST Greatest
GRVL Gravel
GS Glide Slope
GS Glide Slope Indicator
GS Ground Speed
GS Ground Stop
GS Snow pellets/Small hail (less than 1/4”)
GSA General Services Administration
GSDO General Safety District Office
GSE Ground Support Equipment
GSI General Safety Inspector
GSR Ground Service Relay
GSTR Ground Service Transfer Relay
GSTS Gusts
GSTY Gusty
GTC Gain Time Control
GTCL Great Circle
GTG Graphical Turbulence Guidance
GTM General Terrain Model
GTOSCR Gate and Turn-Off Silicon Controlled Rectifier
GTR Greater
GUI Graphic User Interface
GUND Geoid Undulation
GUS Ground Uplink Station
GV Ground Visibility
GVG Giving
GVH Government Vehicle
GW Gross Weight
GWDS Graphic Weather Display System
GWS Graphical Weather Service
GWT Gross Weight
H
H24 Continuous 24hour service
HAA Height Above Airport
HADA Hawaiian Defense Area
HADD Hawaiian Air Defense Division
HADIZ Hawaiian Air Defense Identification Zone
HAL Height Above Landing
HANG Hawaiian Air National Guard
HAPI Holding as Previously Instructed
HAR High Altitude Redesign
HARM High-speed Anti-Radiation Missile
HARS Hazardous Area Reporting Service
HARS Heading and Attitude Reference System
HARS High Altitude Route System
HARV Hybrid Augmented Reusable Vehicle
HAT Height Above Touchdown
HAZ Hazard
HAZMAT Hazardous Materials
HB Homing Beacon
HBN Hazard Beacon
HCAP High Capacity Carriers
HCH Heliport Crossing Height
HCL Horizontal Component of Lift
HCMOS High-density Complementary Metal Oxide Silicon Semiconductor
HCS Host Computer System
HCVIS High Clouds Visible
HDATZ High Density Traffic Zones
HDD Heads Down Display
HDF High Frequency Direction Finding Station
HDFRZ Hard Freeze
HDG Heading
HDME NDB with Distance Measuring Equipment
HDOP Horizontal Dilution of Precision
HDQ FAA Headquarters
HDR Hardware Discrepancy Report
HDSVLY Hudson Valley
HDTA High Density Traffic Airport
HDWND Headwind
HEAD Head of State status
HEL Helicopter
HELI Heliport
HEMS Helicopter Emergency Medical Service
HF High Frequency
HFA High Frequency Radio Antenna
HFDL High Frequency Data Link
HFR Hold for Release
Hg Mercury
HGS Heads Up Guidance System
HGT Height
HHE Household Effects
HI High
HIALS High Intensity Approach Light System
HIBAL High Altitude Balloon
HIC Hybrid Integrated Circuit
HID Host Interface Display
HIEAT Highest Temperature Equaled for All Time
HI-EFAS High Altitude EFAS
HIEFM Highest Temperature Equaled for the Month
HIER Higher
HIESE Highest Temperature Equaled So Early
HIESL Highest Temperature Equaled So Late
HIFOR High Level Forecast
HIIC High-Isolation Integrated Circuit
HIMAT High-Isolation Integrated Circuit
HIRIV How Will Arrival Report be Filed Concerning
HIRL High Intensity Runway Lights
HISS Helicopter Icing Spray System
HITMP Highest Temperature
HITS Highway in the Sky
HIWAS Hazardous In-flight Weather Advisory Service
HIWC High Ice Water Content
HIXAT Highest Temperature Exceeded for All Time
HIXFM Highest Temperature Exceeded for the Month
HIXSE Highest Temperature Exceeded So Early
HIXSL Highest Temperature Exceeded So Late
HIZ High Impedance
HJ Sunrise to Sunset
HLDC High Level Data Link Control
HLDG Holding
HLF Half
HLSTO Hailstones
HLTP Hilltop
HLTTL High-LEvel Transistor-Transistor Logic
HLYR Haze layer aloft
HMI Hazardously Misleading Information
HMOS High-Performance Metal Oxide Silicon Semiconductor
HN Sunset to Sunrise
HND Hundred
HNGR Hangar
HNIL High Noise Immunity Logic
HO Service available to meet operational requirements
HOBOS Homing Bomb System
HOCSR Host/Oceanic Computer System Replacement
HOL Holiday
HOP Handoff Point
HOP Helicopter Operations
HOSP Hospital Aircraft
HOTAS Hands-on-Throttle-and-Stick
HOV High Occupancy Vehicle
HOW Handover Word
HP High Performance
HP High Pressure
HP Holding Pattern
HP Horsepower
HPA Hectopascal
HQ FAA Headquarters
HQ Headquarters
HR Here
HR Hour
HRRR High Resolution Rapid Refresh
HRS Hours
HRZN Horizon
HS Hot Spot
HS Heading Select
HS Service available during scheduled operations
HSCT High-Speed Civil Transport
HSI Horizontal Situation Indicators
HSPD Homeland Security Presidential Directive
HT High Tension
HTFD Hybrid Thick Film Device
HTG Heating
HTL High-Threshold Logic
HTN Heterodyne
HTP High-Test Peroxide
HTR Heater
HUD Heads Up Display
HUD Housing and Urban Development
HUM Humanitarian mission
HUMS Health & Usage Monitoring Systems
HURCN Hurricane
HUREP Hurricane Report
HV High Voltage
HVAC Heating, Ventilating, and Air Conditioning
HVDF High and Very High Frequency Direction Finding Stations
HVOR High VOR
HVPS High-Voltage Power Display
HVY Heavy
HVYR Heavier
HVYST Heaviest
HWAS Hazardous In-Flight Weather Advisory
HWVR However
HWY Highway
HX High Index
HX No specific working hours
HYD Hydraulic
HYDRO Hydrographic
HYR Higher
HZ Haze
Hz Hertz
I
I&I Impact and Implementation
I/AFSS International AFSS
I/IFR intermittent instruments
I/O Input/Output
IA Indicated Airspeed
IA Indicated Altitude
IA Indirect Access
IA Information Assurance
IA Inspection Authorization
IA Intercept Angle
IAARC International Administrative Aeronautical Radio Conference
IAC Instrument Approach Chart
IAC Interagency Air Committee
IACC Interagency Air Cartographic Committee
IACRA Integrated Airman Certification and Rating Application
IAD If authorized by, DME may be used
IAE International Aero Engines
IAF Initial Approach Fix
IAI Israel Aircraft Industries
IAM International Association of Machinists and Aerospace Workers
IAO In and out of clouds
IAP Instrument Approach Procedures
IAPA Instrument Approach Procedures Automation
IAPS Integrated Avionics Processor System
IAR Intersection of Air Routes
IAR Investment Analysis Report
IAS Indicated Air Speed
IAS Investment Analysis Staff
IAT Investment Analysis Team
IATA International Air Transport Association
IATSC International Aeronautical Telecommunications Switching Center
IAW In Accordance With
IAWP Initial Approach Waypoint
IBASF Intervals Between Aircraft in Stream type Formation
IBM International Business Machines
IBN Identification Beacon
IBND Inbound
IBP International Boundary Point
IBR Intermediate Bit Rate
IC Ice Crystals (weather reports only)
IC Icing (PIREP only)
IC Implementation Center
IC Integrated Circit
ICAO International Civil Aviation Organization
ICD Interface Control Document
ICG Icing
ICGIC Icing in clouds
ICGICIP Icing in clouds and precipitation
ICGIP Icing in precipitation
ICMM Integrated Capability Maturity Model
ICMS Integrated Control and Monitor System
ICS Incident Command System
ICSS Integrated Communications Switching System
ICSS International Communications Switching Systems
ICU Instrument Comparator Unit
ID Identification
ID Identify or identifier
IDAT Interfacility Data
IDECM Integrated Defensive Electronic Countermeasures
IDENT Identification
IDG Integrated Drive Generator
IDP Individual Development Plan
IDS Integrated Display System
IDS Interdiction Strike
IDS Intrusion Detection System
IDT Identifier
IEEE Institute of Electrical and Electronics Engineers
IEPR Integrated Engine Pressure Ratio
IF Intermediate Approach Fix
IF Intermediate Fix
IF Intermediate Frequency
IFAMP If Approach Missed Proceed
IFB Invitation For Bid
IFCP Interfacility Communications Processor
IFDS Interfacility Data System
IFEA In-Flight Emergency Assistance
IFF Identification Friend/Foe
IFHOL If Holding
IFIM International Flight Information Manual
IFINS If Instrument Conditions Encountered
IFO International Field Office
IFO Interphone
IFONO Interphone (service F) not operative
IFORO Interphone (service F) resumed operation
IFP Instrument Flight Procedures
IFP Instrument Foreign Pilot
IFPA Instrument Flight Procedures Automation Program
IFPFP Individual Flight Plans from this Point
IFR Instrument Flight Rules
IFSS International Flight Service Station
IFUN If Unable
IFVLS If Flight Visibility Becomes Less Than
IFVR If Visibility Remains
IG Inspector General
IGA International General Aviation
IGFET Insulated Gate Field Effect Transistor
IGI Instrument Ground Instructor
IGIA Interagency Group on International Aviation
IGN Ignition
IGV Inlet Guide Vanes
IHP Indicated Horsepower
IHS Integrated Heat Sink
IIA If Incorrect Advise
IIE Integrated Information Environment
IIL Integrated Injection Logic
IIR Imaging Infa-Red
IIS Integrated Instrument System
IISD If Incorrect Service Direct
ILAS Instrument Low Approach
ILM Inventory Logistics and Maintenance Suite
ILP Integral Lead Package
ILS Instrument Landing System
ILSOC Instrument Landing System on Course
ILSP Instrument Landing System Partial
ILSP Integrated Logistics Support Plan
IM Inner Marker
IMAP Immediately After Passing
IMC Instrument Meteorological Conditions
IMDT Immediate
IMDTLY Immediately
IMF Interrogation sign
IMG Immigration
IMI Intensity unknown (weather reports only)
IMO International Meteorological Organization
IMP Impracticable
IMPATT Impact Avalanche Transit Time
IMPL Impulse
IMPLS Impulses
IMPR Improve
IMPT Important
IMT Immediate or immediately
IMU Inertial Measuring Unit
IN Inch
IN. HG. Inches of Mercury
INA Initial Approach
INADQT Inadequate
INATS Interruption of Air Traffic Services
INBD Inbound
INC In Clouds
INC Incorporated
INCERFA Uncertainty Phase Code (alerting service)
INCL Include
INCLD Included
INCLG Including
INCLS Includes
INCLV Inclusive
INCOMP Incomplete
INCOR Incorrect
INCR Increase
INCRD Increased
INCRG Increasing
INCRGLY Increasingly
INCRS Increases
INDC Indicate
INDCD Indicated
INDCG Indicating
INDCS Indicates
INDEF Indefinite
INDUS Industrial
INF Inland Navigation Facility
INFO Information
inHg inches of mercury
INIT Initial training
INLD Inland
INM Integrated Noise Model
INOF If Not Off
INOP Inoperative
INP If Not Possible
INPR In Progress
INREQ Information request
INS Inertial Navigation System
INSP Inspect
INST Instrument
INSTA Instruments Authorized
INSTA Interstate
INSTBY Instability
INSTL Install
INSTR Instruct
INSTR Instrument
INSUF Insufficient scheduled time available
INSUF Unable to finish
INT Intersection
INTCNTL Intercontinental
INTCP Intercept
INTD Intend
INTER Intermittent
INTEROP Interoperability Requirements
INTFC Interface
INTFC Interference
INTL International
INTMD Intermediate
INTMT Intermittent
INTMTLY Intermittently
INTNS Intentions
INTPH Interphone
INTR Interior
INTR Interrogation
INTRG Interrogator
INTRMTRGN InterMountain Region
INTRP Interrupt
INTS Intense
INTSF Intensify or intensifying
INTSFCN Intensification
INTSFY Intensify
INTSFYD Intensified
INTSFYG Intensifying
INTSFYS Intensifies
INTST Intensity
INTSTY Intensity
INTVL Interval
INTXN Intersection
INV Inverter
INVES Investigate
INVOF In the Vicinity Of
INVRN Inversion
INVSTAR Investigate and Report
INWP Intermediate Waypoint
IOAT Indicated Outside Air Temperature
IOC Initial Operating Capability
IOC Initial Operating Condition
IOC Input/Output Concentrator
IOT&E Independent Operational Test and Evaluation
IOVC In Overcast
IP Initial Point
IP Instructor Pilot
IP Intermediate Pressure
IP Internet Protocol
IP/HHCL Initial Point/Hour Control Line
IPAP This list is copywritten and belongs to proairpilot
IPDS Instrument Procedure Development System
IPMS IT Program Management System
IPN Iso Propyl Nitrate
IPR In Process Review
IPT Integrated Product Team
IPV Improve
IPV Instrument Procedure with Vertical Guidance
IPVG Improving
IR Ice on Runway
IR IFR military training route
IRAC Interdepartmental Radio Advisory Committee
IRAD Inbound Radial
IRAN Insect and Repair as Necessary
IRBM Intermediate Range Ballistic Missile
IRCAS Intranet Radio Coverage Analysis System
IRCM Infa-Red Counter Measures
IRD Initial Requirements Document
IREG Irregular
IRM Information Resource Management
IRMC Integrated Risk Management Checklist
IRMP Information Resources Management Plan
IRMP Internal Reference Mode Panel
IRN Interface Revision Notices
IRS Inertial Reference System
IRST Infa-Red Search/Track
IRU Inertial Reference Unit
IRVR Instrument Runway Visual Range
IS Island
ISA Instrument Society of America
ISA International Standard Atmosphere
ISAR Inverse Synthetic Apeture Radar
ISB Independent Sideband
ISBP Information Security Business Portal
ISC Initial System Capability
ISDN Integrated Services Digital Network
ISIS Integrated Sight and Interception System
ISMGR Island Manager
ISMLS Interim Standard Microwave Landing System
ISO Information System Owner
ISO International Standards Organization
ISOL Isolate
ISOLD Isolated
ISS Inertial Sensing System
ISS Information Systems Security
ISS Instrument Source Select
ISSCA Information Systems Security Certification Agent
ISSM Information Systems Security Manager
ISSO Information Systems Security Officer
IST InterService Team
IT Information Technology
ITALD Improved Tactical Air-Launched Decoy
ITC In-Trail Climb
ITCK Issue Time Check
ITCZ Intertropical Convergence Zone
ITD In-Trail Descent
ITEB Information Technology Executive Board
ITI Interactive Terminal Interface
ITIL Information Technology Infrastructure Library
ITMRA Information Technology Management Reform Act
ITNRNT itinerant
ITRY itinerary
ITSM Information Technology Service Management
ITU International Telecommunications Union
ITWS Integrated Terminal Weather System
IVFRC In VFR conditions
IVRS Interim Voice Response System
IVS Instantaneous Vertical Speed
IVSI Instantaneous Vertical Speed Indicator
IVSR Interim Voice Switch Replacement Program
IVT Interactive Video Teletraining
IVV Instantaneous Vertical Velocity
IW Inside Wiring
IWGDS Interim Weather Graphic-Display System
J
J joule
JAA Joint Aviation Authority
JAI Joint Acceptance Inspection
JAL Jet Approach Landing Charts
JAL Japan Air Lines
JAR Joint Airworthiness Requirements
JAR Joint Aviation Regulation
JAST Joint Advanced Strike Technology
JATO Jet Assisted Takeoff
JAWYS Join Airways
JBAR Jet Runway Barrier
JCN Job Control Number
JCTN Junction
JDAM Joint Direct Attack Munition
JFET Junction Field Effect Transistor
JMCIS Joint Maritime Command Information System
JO Joint Order
JOUR Journeyman
JP Jet Penetration
JPAP Jet Penetration Approach
JPATS Joint Primary Aircraft Training System
JPDO Joint Planning and Development Office
JPL Jet Propulsion Laboratory
JPT Jet Pipe Temperature
JRC Joint Resources Council
JROC Joint Requirements Oversight Commitee
JSOW Joint Stand-Off Weapon
JSS Joint Surveillance System
JTIDS Joint Tactical Information Distribution System
JTST Jet Stream
JTSTR Jet Stream
K
K Cold (air mass)
Kbps Kilobits Per Second
KC Kilocycles
KCAS Knots Calibrated Airspeed
KEPOA Keep this Office Advised
KFRST Killing Frost
KG Kilogram
K-H Kelvin-Helmholtz - Wave pattern in clouds
KHZ Kilohertz
KIAS Knots Indicated Airspeed
KLYR Smoke Layer Aloft
KM Kilometers
KMH Kilometers Per Hour
KOCTY Smoke Over City
KPA Kilopascal
KSN Knowledge Services Network
KT Knots
KTAS Knots True Airspeed
KV Kilovolts
KVA Kilovolt-Amps
KVAR Kilovolt-Amps Reactive
KVDT Keyboard Video Display Terminal
KW Kilowatt
