the Aviation Dictionary

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IFDS - interfacility data system
IFEA - in flight emergency
assistance
IFF - Identification, Friend or
Foe
IFIM - International Flight
Information Manual
IF0 - International Field Office
IFR - instrument flight rules
IFS - integrated flight system
IFSS - international flight
service station
IGFET - insulated gate field
effect transistor
IGV - inlet guide vane
IHP - indicated horsepower
ILS - instrument landing system
IM - inner marker
IMC - instrument meteorological
conditions
IMEP - indicated mean effective
pressure
in. Hg - inches of mercury
INM - integrated noise model
INS - inertial navigation system
Int - intersection
INU - inertial navigation unit
IOAT - indicated outside air
temperature
IOC - initial operational
capability
IPB - illustrated parts breakdown
IPC - illustrated parts catalog
IPL - illustrated parts list
IPM - illustrated parts manual
IR - IFR military training route
IR - infrared
IRAN - Inspect and Repair As
Necessary
IRBM - intermediate-range
ballistic missile
IRMP - information resources
management plan
IRS - inertial reference system
IRU - inertial reference unit
ISA - International Standard
Atmosphere
ISDN - integrated services
digital network
ISMLS - interim standard
microwave landing system
ISOV - isolation shutoff valve
ISU - inertial sensing unit
IT1 - interactive terminal
interface
ITT - inlet turbine temperature
ITT - intermediate turbine
temperature
ITWS - integrated terminal
weather system
IVRS - interim voice response
system
IVSI - instantaneous rate of
climb indicator
IVSI - instant vertical speed
indicator
IW - inside wiring
j -joule
JATO -jet
JFC -jet
JFET -junction
transistor
(energy unit).
assisted takeoff
fuel control
field effect
JFK - John F. Kennedy
international airport
JPT -jet
pipe temperature
Kbps - kilobits per second
KE - Kinetic Energy.
Khz - kilohertz
kHz - kilohertz
KIAS -knots
kt - Knot (1 nm/hr).
indicated airspeed
KTAS - knots true airspeed
KVAR - kilovolt amperes
reactive
KVDT -keyboard
terminal
video display
LMF - low/medium frequency
LA - power lever angle
LAA - local airport advisory
Aircraft Technical Book Company
P.O. Box 270
Tabernash, CO 80478
http://w.ACTechbooks.com
LAAS - local area augmentation
system
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
operations
LAN - local area network
LASCR - light-activated silicon
control rectifier
LAT - latitude
LATA - local access and
transport area
LAWRS - limited aviation
weather reporting station
Ib - pound.
LCD - liquid crystal display
LCF - local control facility
LCN - local communications
network
LDA - landing directional aid
LDA - landing distance available
LDIN - lead in lights
LEC - local exchange carrier
LED - light emitting diode
LEMAC - leading edge of the
mean aerodynamic chord
LF - low frequency
LFR - low- frequency radio
range
LFIMF-
low/medium frequency
LGA - LaGuardia Airport
LH - left-hand (threads)
LTNCS - Leased Interfacility
NAS Communications System
LIRL - low intensity runway
lights
LIS - Logistics and Inventory
System