ICC IAPS Card Cage
ICD (1) Installation Control Drawing
(2) Interface Control Drawing
(3) Interactive Design Center
ICNIA Integrated Communications,Navigation and
Identification Avionics
ICU Instrument Comparator Unit
IDC Indicator Display/Control
Ident The action of the transponder transmitting an extra
pulse along with its identification code (at the
request of a controller).
IDG Integrated Drive Generator
IDS (1) Ice Detection System
(2) Integrated Display System
IEC IAPS Environmental Control Module
IED Insertion Extraction Device
IEEE Institute of Electrical and Electronic Engineers
IF (if) Intermediate Frequency. A frequency to which a sig-
nal is shifted as an in-between step in the reception
or transmission of a signal.
IFALPA International Federation of Airline Pilots Association
IFATCA International Federation of Air Traffic Controllers.
Associations
IFPS Integrated Initial Flight Plan Processing System
IFR Instrument Flight Rules
IGES Standardized Graphics Exchange File
IGV Inlet Guide Vane
ILM Independent Landing Monitor
ILS Instrument Landing System. The system provides lat-
eral,along-course and vertical guidance to aircraft attempting a landing.
IMA Integrated Modular Avionics
IMC Instrument Meteorological Conditions IMPATT Impact Avalanche and Transmit Time. This type of Diode diode,when mounted in an appropriate cavity, pro
duces microwave oscillations and amplification. IMTEG ICAO ILS/MLS Transition Group Europe IND Indicator INU Inertial Navigation Unit IAS Indicated Airspeed is the speed indicated by a differ-
ential pressure airspeed indicator which measures the
actual pressure differential in the pitot-static head. It
is the actual instrument indication for a given flight
condition.
Indicated The altitude above mean sea level (uncorrected for
Altitude temperature).
INMARSAT International Maritime Satellite Organization
I/O Input/Output. Refers to bi-directional data ports.
INPH Interphone
INS Inertial Navigation System. A self-contained,dead-reckoning system that senses the acceleration along the three axes of the aircraft and calculates the dis-tance traveled from a reference point. Accuracy of the system decreases with respect to time.
INST Instrument
Intruder An altitude reporting aircraft that is being considered as a potential threat and that is being processed by the threat detection logic (TCAS).
IOC Initial Operational Capability
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