Civil aviation dictionary
Aviation glossary
Terms, abbreviations and procedures explained without unnecessary jargon, with English names and clear definitions.
- Total entries
- 2480
- Terms
- 435
- Abbreviations
- 2045
I
- AbbreviationInstrument Approach Procedures
IAP stands for Instrument Approach Procedures in FAA terminology.
- AbbreviationInstrument Approach Procedures Automation
IAPA stands for Instrument Approach Procedures Automation in FAA terminology.
- OperationsINSTRUMENT DEPARTURE PROCEDURE (DP)
A preplanned instrument flight rule (IFR) departure procedure published for pilot use, in graphic or textual format, that provides obstruction clearance from the terminal area to the appropriate en route structure.
- AbbreviationInstrument Flight Procedures
IFP stands for Instrument Flight Procedures in FAA terminology.
- AbbreviationInstrument Flight Procedures Automation Program
IFPA stands for Instrument Flight Procedures Automation Program in FAA terminology.
- AbbreviationInstrument Flight Rules
Instrument flight rules and the associated flight-planning and control procedures.
- AbbreviationInstrument Landing System
An instrument landing system providing precise approach guidance.
- Abbreviationinstrument low approach
ILAS stands for instrument low approach in FAA terminology.
- AbbreviationInstrument Meteorological Conditions
Weather conditions below the applicable visual-flight minima.
- AbbreviationInstrument Procedure Development System
IPDS stands for Instrument Procedure Development System in FAA terminology.
- Abbreviationinstruments authorized
INSTA stands for instruments authorized in FAA terminology.
- Abbreviationinsufficient scheduled time available
INSUF stands for insufficient scheduled time available in FAA terminology.
- AbbreviationIntegrated Communications Switching System
ICSS stands for Integrated Communications Switching System in FAA terminology.
- AbbreviationIntegrated Control and Monitor System
ICMS stands for Integrated Control and Monitor System in FAA terminology.
- OperationsINTEGRATED DEPARTURE/ARRIVAL CAPABILITY (IDAC)
A Tower/TRACON departure scheduling capability within TBFM that allows departures to be scheduled into either an arrival flow or an en route flow.
- AbbreviationIntegrated Terminal Weather System
ITWS stands for Integrated Terminal Weather System in FAA terminology.
- AbbreviationIntensity unknown (weather reports only)
IMI stands for Intensity unknown (weather reports only) in FAA terminology.
- AbbreviationInter-Mountain Region
INTRMTRGN stands for Inter-Mountain Region in FAA terminology.
- AbbreviationInteragency Group on International Aviation
IGIA stands for Interagency Group on International Aviation in FAA terminology.
- AbbreviationInterdepartmental Radio Advisory Committee
IRAC stands for Interdepartmental Radio Advisory Committee in FAA terminology.
- AbbreviationInterface Control Document
ICD stands for Interface Control Document in FAA terminology.
- AbbreviationInterfacility Communications Processor
IFCP stands for Interfacility Communications Processor in FAA terminology.
- Abbreviationinterim standard microwave landing system
ISMLS stands for interim standard microwave landing system in FAA terminology.
- AbbreviationInterim Weather Graphic-Display System
IWGDS stands for Interim Weather Graphic-Display System in FAA terminology.