INHIB INHIBITION
INIT INITIAL, INITIALIZATION
INL INLET
INOP INOPERATIVE
INP INPUT
INR INNER
INS INERTIAL NAVIGATION SYSTEM
INST INSTINCTIVE
INST INSTRUMENTS
INSTR INSTRUMENT
INT INTERPHONE
INTCP INTERCEPT
INTIPF INTERRUPT IN PROGRESS TEST FAILURE
INTM INTERMITTENT
INTPH INTERPHONE
INTRF INTERRUPT RETURN TEST FAILURE
INTRG INTERROGATOR
INU INERTIAL NAVIGATION UNIT
INV INVERTER
IOT IN OPERATING TEST
IP INTERMEDIATE PRESSURE
IPC ILLUSTRATED PARTS CATALOGUE
IPC INTERMEDIATE PRESSURE CHECK VALVE
IPCV INTERMEDIATE PRESSURE BLEED CHECK VALVE
IPPU INSTRUMENTATION POSITION PICK OFF UNIT
IPS INCH PER SECOND
IR INERTIAL REFERENCE
IR INFRARED
IRS INERTIAL REFERENCE SYSTEM
IRU INERTIAL REFERENCE UNIT
ISA INTERNATIONAL STANDARD ATMOSPHERE
ISDU INERTIAL SYSTEM DISPLAY UNIT (IRS)
ISO INTERNATIONAL STANDARDIZATION ORGANIZATION
ISOL ISOLATION
ISS INERTIAL SENSOR SYSTEM
ISU INERTIAL SENSOR UNIT
ISV INERTIAL VERTICAL SPEED
ITEM ILLUSTRATED TOOL AND EQUIPMENT MANUAL
ITF INSTRUCTION TEST FAILURE
IVS INERTIAL VERTICAL SPEED
J JULIETT
J JUNCTION
JAA JOINT AVIATION AUTHORITY (EUROPE)
JAM JAMMED
JAMF JET AIRCRAFT MAINTENANCE FUNDAMENTALS
JAMG JAMMING
JAR JOINT AIRWORTHINESS REQUIREMENTS (REGULATIONS) (EUROPE)
JB JUNCTION BOX
JCT JUNCTION
JFET JUNCTION FIELD EFFECT TRANSISTOR
JIC JOB INSTRUCTION CARDS
JK JACK
JOG JOGGLE
JPD JAMMING PROTECTION DEVICE
K KILO
K / A KEEP A LIVE
K KELVIN
Aircraft Systems - Abbreviations and Acronyms 33

KA CATHODE
KB KILO BYTE (1024 BYTES)
KCAS KNOTS CALIBRATED AIR SPEED
KEAS KNOTS EQUIVALENT AIR SPEED
KRUG KRUGER (KRÜGER)
KT KNOTS
KTS KNOTS
L LIMA
L & M LOGIC AND MONITOR
L & T LOAD AND TRIM
L / D LIFT / DRAG
L / E LEADING EDGE
L / G LANDING GEAR
L / H LEFT HAND
L LAVATORY
L LEFT
L LENGTH
LA LINEAR ACCELEROMETER
LAF LOAD ALLEVIATION FUNCTION