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FMS ignores the data from the satellite. Deselected satellites are not included in the predicted
RAIM computations.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−77
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
GLOBAL POSITIONING SYSTEM (GPS) (CONT'D)
FMS GPS Control Page
Figure 17−10−73
FLIGHT MANAGEMENT SYSTEM (FMS)
Description
A dual flight management system (FMS) provides integrated cockpit and flight management
functions. Each flight management system (FMS 1 and FMS 2) is composed of a control display
unit (CDU) in the cockpit, and a flight management computer (FMC) in the underfloor avionics
equipment bay. A single data base unit (DBU) allows data to be uploaded or downloaded to all of
the FMCs. A third flight management system (FMS 3) may be installed as a customer option.
The FMS cockpit management functions include:
• Navigation sensor control;
• Radio tuning;
• Multifunction display (MFD) control menus;
• Navigation database management;
• Control and management of the data loader; and
• Management of the data interface with external systems (AFIS).
Flight management functions include:
• Continuous calculation of the integrated navigation solution;
• Flight plan inputs by the crew;
• Lateral flight plan point-to-point navigation;
• Vertical navigation;
• Performance calculation; and
• Lateral/vertical steering commands to the flight control system.
The third FMS, if installed, is defined as a “hot spare”, and is fully functional when selected.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−78
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
FLIGHT MANAGEMENT SYSTEM (FMS) (CONT'D)
For a comprehensive description of FMS functions and operation, refer to the “Collins FMS-6000
for the Challenger 605” Pilot’s Guide.
Components and Operation
FMS Control Display Units (CDUs)
The FMS CDU is the cockpit interface of the flight management system. It allows the flight crew
to input, modify, and execute flight plans, as well as calculate aircraft performance. It also acts
as a radio tuning interface through a dedicated TUNE page, and is the primary means of control
for most navigation sensors. The CDU controls certain information displays on the MFDs, and
advises the flight crew of FMS system status through a variety of message formats.
Power Supplies
• The No. 1 (left) CDU is powered by BATT bus.
• The No. 2 (right) CDU is powered by DC bus 2.
• The No. 3 CDU is powered by the DC essential bus.
Scratchpad and Line-Select Keys
The FMS CDU is arranged so that all flight crew inputs are conducted through a “scratchpad”,
which allows easy data input and retrieval. An alphanumeric keypad permits entry of all
relevant data to the scratchpad, and line-select keys are used to insert the data in the
appropriate area of the display page. Most information contained on the display page can
similarly be “line-selected”, and is then transferred to the scratchpad for reference or
modification.
Execute Key
Most entries made into the flight plan or performance calculations are considered modifications
to the active flight plan, and must be executed using the EXEC function key before they
become active components of the flight plan. This permits the flight crew to cross-check any
modifications prior to committing them to the active flight plan.
Function Keys
Dedicated function keys allow direct access to certain flight management or cockpit
management features of the FMS.
Certain CDU displays have multiple pages, as indicated in the top right corner of the display
screen. Access to the other pages is achieved using the PREV and NEXT function keys.
MFD Function Keys
Three function keys relate specifically to MFD displays. The MFD DATA and MFD MENU keys
control the type of information available on the MFD. The MFD ADV key allows access to
multiple pages of MFD information. When the PLAN MAP format of the MFD is in use, the
MFD ADV key allows the flight crew to view the waypoints of their flight plan.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−79
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
FLIGHT MANAGEMENT SYSTEM (FMS) (CONT'D)
FMS Control Display Unit (CDU)
Figure 17−10−74
Flight Management Computers (FMCs)
The flight management computers are installed in the integrated avionics processing system
(IAPS). The FMCs receive flight crew inputs from the CDU, and perform all the flight
　
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