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FMS GPS Control Page.................................................................................................. 17-66
FMS Control Display Unit (CDU) .................................................................................... 17-67
Database Unit ................................................................................................................. 17-68
FMS TUNE INHIB Switch/Light....................................................................................... 17-69
FMS 3 Reversionary Selector ......................................................................................... 17-70
CDU Message Display.................................................................................................... 17-71
PFD Message Display .................................................................................................... 17-72
MFD Message Display.................................................................................................... 17-73
NAVIGATION SYSTEMS
For Training Purposes Only
May 03
17-1
P I LOT T R A I N I N G GU I D E
CHAPTER 17: NAVIGATION SYSTEMS Introduction
The navigation systems calculate and display the attitude, altitude and position of the
aircraft, based on data from other aircraft systems, ground stations and sensed
environmental conditions around the aircraft. The displayed information includes
aircraft movement, distance, speed and direction of travel about all three axes. The
present position and computed future positions can also be displayed.
This chapter will cover:
• Independent Position Determining Systems
• Dependent Position Determining Systems, and
• Flight Management System (FMS)
Refer to the “Collins Pro Line 4 Avionics System For The Challenger 604” Pilot’s
Guide for additional information.
Independent Position Determining Systems
Operating independently of ground installations or orbital satellites, the independent
position determining systems establish accurate aircraft location in three dimensions.
They are comprised of the following avionics systems:
• Inertial Reference System (IRS)
• Weather Radar System
• Enhanced Ground Proximity Warning System (EGPWS)
Dependent Position Determining Systems
The dependent position determining systems use ground installations, aircraft
transponders, or orbital satellites to determine the location of the aircraft, and include
the following avionics systems:
• VHF Navigation System
• Automatic Direction Finder (ADF) System
• Distance Measuring Equipment (DME) System
• ATC Transponder
• Traffic Alert and Collision Avoidance System (TCAS II)
• Global Positioning System (GPS)
NAVIGATION SYSTEMS
17-2 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Flight Management System (FMS)
The FMS is a fully integrated navigation and flight data system providing:
• cockpit management - NAV sensor control, secondary radio tuning, and MFD
control menus
• flight management - lateral point-to-point navigation, Vertical Navigation
(VNAV), flight parameter computation; and
• diagnostic functions
The FMS, when equipped with a current navigation database, provides accurate flight
planning and three-dimensional steering command outputs to facilitate optimum greatcircle,
point-to-point navigation within the limits of the aircraft.
Associated Components
The following components (based on a standard cockpit configuration) are associated
with the operation of the navigation systems:
• two Display Control Panels (DCPs)
• two Primary Flight Displays (PFDs)
• two Multifunction Displays (MFDs)
• two Radio Tuning Units (RTUs)
• two FMS Control Display Units (CDUs)
• one Source Selector Panel
NAVIGATION SYSTEMS
For Training Purposes Only
May 03
17-3
P I LOT T R A I N I N G GU I D E
Inertial Reference System (IRS)
Description
The IRS installed in the Challenger 604 is the Litton LTN-101 Inertial Reference Unit.
It is a fully independent, self-contained navigation system which provides attitude,
directional, position, and three-axis rate/acceleration data to the following aircraft
systems:
• PFD and MFD displays
• Automatic Flight Control System (AFCS)
• Weather Radar System
• EGPWS
• TCAS
• Fuel System (for fuel quantity indications)
• Flight Data Recorder (FDR)
• Air Data Computer (ADC)
• Flight Management System (FMS)
The standard installation consists of two IRS systems, IRS 1 and IRS 2 (see
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