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operation. The switch can be used to manually activate the ELT for test purposes or emergency
situations.
LIGHT SENSOR - ELT PANEL
GF0610_065
LIGHT SENSOR − ELT (OPTIONAL) PANEL
ON − When selected the ELT will
begin to transmit.
− Normal position
selected to arm the system
for automatic activation.
ELT Switch
ARM/RESET
If the system is accidentally activated, the unit
can be reset by placing the switch to ON, then
back to ARM/RESET.
NOTE
ELT
FOR AVIATION
EMER USE ONLY
UNAUTHORIZED OPERATION PROHIBITED
ON
ARM/
RESET
COMMUNICATIONS
Flight Crew Operating Manual REV 51, Aug 14, 2006
CSP 700−6
Volume 2
06−10−32
LIGHT SENSOR - ELT PANEL (CONT'D)
The ELT transmits signals on 121.5, 243.0 and optional 406.025 MHz. The 406.025 MHz may be
installed as part of the ELT and its signal is transmitted for satellite relay. Upon activation, the 121.5,
243.0 signals operate continuously until the self contained battery pack power is exhausted (typically
last at least 72 hours) or the unit is reset. If the optional 406 MHz transmitter module is installed, the
output signal is transmitted for 24 hours (once every 47 seconds) then automatically shuts off. The
121.5, 243.0 signals are shut off while the 406 MHz signal is transmitting.
ELT SCHEMATIC
GF0610_066
EMERGENCY
LOCATOR
TRANSMITTER
DAU 2 IAC
EICAS
DISPLAY
EICAS
ADVISORY
MESSAGE
ON
ARM
121.5/243.0 MHz
406.025 MHz
ELT TRANSMITTING
ELT ANTENNA
ELT
FOR AVIATION
EMER USE ONLY
ON
ARM/
RESET
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.
COMMUNICATIONS
REV 51, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−6
Volume 2
06−10−33
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-to-air capabilities. Crew advisory messages are displayed on the CDU scratch
pad.
Communication Links
Third VHF COMM (On airplanes with SB 700-23-002 incorporated) − 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.
UHF (Telephony) − Available through the Cabin Communication System. Weather maps
(graphical weather) could be routed to the airplane via this medium.
Data Link Features
Flight Planning
• Requests flight plans from service provider.
• Reports current flight plan to service provider.
Enroute Winds Aloft
• Request winds aloft for flight plan.
• Report current wind at present position.
Position Reporting (ICAO format)
• Send crew initiated position report.
• Automatically send position report.
Pre-flight Data Request
• ATIS, terminal weather, departure clearance and oceanic clearance.
In flight Communication
• 000I 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, telephony, display telelink configuration, discretes configuration, ARINC
ports/devices configuration and display telelink faults.
COMMUNICATIONS
Flight Crew Operating Manual REV 51, Aug 14, 2006
CSP 700−6
Volume 2
06−10−34
AIRBORNE DATA LINK SYSTEM (IF INSTALLED) (CONT'D)
Data Link Features (Cont’d)
The crew can access the DATALINK INDEX PAGE from the NAV INDEX page of the flight
management system.
GF0610_067
NAV INDEX 1/2
FPL LIST FPL SEL
WPT LIST DATA LINK
DEPARTURE ARRIVAL
POS SENSORS TUNE
DATALINK INDEX 2/2
FLT PLAN WINDS
REPORTS PREFLIGHT
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