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RESET
FOR AVIATION
EMER USE ONLY
UNAUTHORIZED OPERATION PROHIBITED
ON
AR
RE
GX_05_047
ELT Switch
ON
ARM/RESET
When selected the ELT
will begin to transmit.
Normal
position selected to arm the
system for automatic
activation.
–
–
Note:
If the system is accidentally
activated, the unit can
be reset by placing the
switch to ON, then back to
ARM/RESET.
LIGHT SENSOR – ELT
P I LOT T R A I N I N G GU I D E
COMMUNICATIONS
5-34 For Training Purposes Only
Sept 04
ELT SCHEMATIC
An internally mounted G-switch is triggered on impact and activates the ELT. The
ELT antenna is mounted on the top aft exterior of the airplane and interfaces with all
signal outputs. When the ELT is transmitting, a signal is sent to the transmitter to
DAU 2. This signal used by the DAU provides an ELT transmitting advisory message
to EICAS.
CAUTION
The emergency locator system test should only be
performed during the first 5 minutes of every hour of UTC
time to avoid nuisance warnings and alerting Search and
Rescue services. The test duration is not to exceed 30
seconds to avoid triggering the satellite system.
AIRBORNE DATA LINK SYSTEM (IF INSTALLED)
Data link operation is via the third VHF comm, UHF (telephony), or SATCOM and
controllable from all FMS CDUs. The system utilizes the same data loading unit as the
FMS with printer interface, air-ground-air, and air-air capabilities. Crew advisory
messages are displayed on the CDU scratchpad.
COMMUNICATION LINKS
Third VHF comm – Using the SYSTEM SELECT page on the RMU, the pilot can
select COM 3 MODE to be VOICE or DATA. When DATA is selected, the data link is
in control of the radio; data frequency is selectable only through the data link.
SATCOM – Automated to this link as required (VHF or UHF not available). Pilot
selectable if desired.
GX_05_048
ELT ANTENNA
121.5/243.0 MHz
ON
ARM
ELT TRANSMITTING
406.025 MHz
EMERGENCY
LOCATOR
TRANSMITTER
DAU 2 IAC
EICAS
DISPLAY
ADVISORY
CAS MESSAGE
ELT
ARM/
RESET
ON
AR
RE
For Training Purposes Only
Sept 04
5-35
P I LOT T R A I N I N G GU I D E
COMMUNICATIONS
UHF (Telephony) – Available through the Cabin Communication System. Weather
maps (graphical weather) could be routed to the airplane via this medium (optional
growth path).
Data Link Features
Flight Planning
• Requests flight plans from service provider
• Reports current flight plan to service provider
Enroute Winds Aloft
• Requests winds aloft for flight plan
• Report current wind at present position
Position Reporting (ICAO format)
• Send crew initiated position report
• Automatically send position report
Preflight Data Request
• ATIS, terminal weather, departure clearance, and oceanic clearance
In flight Communication
• 0001 reports, ETA update, diversion, fuel update, flight delay, and airplane
problem report
Messages
• Send message, messages received
Text Weather
• Terminal, Sigmets, and Pireps
Graphical Weather Maps
• Composite, significant, tops/movement, depiction, satellite, and winds/temp aloft
Configure Data Link System
• VHF, SATCOM, telephone, display telelink configuration, discretes configuration,
ARINC ports/devices configuration, and display telelink faults
The crew can access the DATALINK INDEX PAGE from the NAV INDEX page of
the flight management system.
P I LOT T R A I N I N G GU I D E
COMMUNICATIONS
5-36 For Training Purposes Only
Sept 04
For additional system description and operation refer to the applicable manufacture
handbook.
SATCOM (IF INSTALLED)
The optional multichannel Satellite Communications (SATCOM) System is provided
for worldwide voice and data communications over L-band frequencies.
The SATCOM system interfaces with a dedicated antenna subsystem to provide
satellite communications. A minimum of three satellite communications channels are
required: two voice channels and one data channel. One voice channel is dedicated to
the flight compartment, and another voice channel to the Office In The Sky (OITS)
telephone. The data channel is dedicated for either the Airborne Flight Information
System (AFIS), or the OITS facsimile or modem.
The factory option of the MCS-6000 consists of a six-channel SATCOM system and
antenna. Components include:
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