Glossary
Glossary-2 98-145168-A
I
ICAO International Civil Aviation Organization
ILS Instrument Landing System. A system of tightly focused transmitters located at the end
of a runway that provides flight guidance information to flight crews.
IMSI International Mobile Subscriber Identity
IPSEC Internet Protocol Security
L
LGA Low Gain Antenna
LRU Line Replaceable Unit. A separate unit or module which can easily be replaced.
M
MCDU Multi-Function Control Display Unit
MCU Modular Component Unit
O
ORT Owners Requirements Table
P
PAST Person Activated Self Test
PIESD Passenger Information and Entertainment Services Domain
PTT Push To Talk
R
RF Radio Frequency (signal)
RMA Return Material Authorization
Rx Receive (signal)
S
SATCOM Satellite Communications
SB Swift Broadband
SCDU Satellite Control/Display Unit
SCM SDU Configuration Module
SDU Satellite Data Unit
SSPC Solid State Power Controller
STC Supplemental Type Certificate.
T
TC Type Certificate
TCAS Traffic Alert and Collision Avoidance System. A system which warns pilots of potential
conflicts with other aircraft.
TX Transmit (signal)
U
USB Universal Serial Bus
USIM Universal Subscriber Identity Module
V
VHF Very High Frequency. 30-300 MHz.
VOR VHF Omnidirectional Range
VPN Virtual Private Network
W
WoW Weight on Wheels
WSC Williamsbrug SDU Controllers
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