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Figure 17−10−1
IRS Reversionary Function (Dual IRS Configuration)
When NORM is selected, the pilot and copilot electronic flight displays receive data from their
individual onside IRS.
When 1 is selected, the pilot and copilot electronic flight displays receive data from IRS 1 only. A
yellow source message is displayed on the PFD and/or MFD.
When 2 is selected, the pilot and copilot electronic flight displays receive data from IRS 2 only. A
yellow source message is displayed on the PFD and/or MFD.
IRS Reversionary Annunciation (Dual IRS Configuration)
Figure 17−10−2
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−3
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
INERTIAL REFERENCE SYSTEM (IRS) (CONT'D)
IRS Reversionary Function (Triple IRS Configuration)
An optional third IRS may be installed to supply an auxiliary source of inertial data, to increase
dispatch and enroute reliability. Thus, an alternate sensor reversion panel (IRS/FMS reversionary
panel) is also installed in the center pedestal.
When both L and R IRS rotary switches are selected to NORM, the pilot and copilot electronic
flight displays receive data from their individual onside IRS sensor.
When the L IRS switch is selected to ALTN, the pilot electronic flight displays receive data from
IRS 3 only. An IRS 3 annunciation is displayed on the left PFD, left of the altimeter tape.
When the R IRS switch is selected to ALTN, the copilot electronic flight displays receive data from
IRS 3 only. An IRS 3 annunciation is displayed on the right PFD, left of the altimeter tape.
When ALTN IRS is selected by both the pilot and copilot, a yellow IRS 3 annunciation is displayed
on both L and R PFDs.
IRS Reversionary Annunciation (Triple IRS Configuration)
Figure 17−10−3
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−4
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
INERTIAL REFERENCE SYSTEM (IRS) (CONT'D)
EICAS Messages
MESSAGE MEANING
IRS 3 ALIGNING IRS 3 is in align mode or ATT mode with no IRS 3 INOP status message.
IRS 1 (2) (3) POWER
FAULT Indicates the respective IRS DC power supply failed.
IRS 1 (2) (3) IN ATT Indicates the respective IRS is operating in attitude mode.
IRS 3 INOP Indicates a failure of IRS 3.
WEATHER RADAR SYSTEM
Description
The Collins WXR–854 is a solid-state, low-power, X-band weather radar system. The radar
detects wet precipitation and precipitation-related turbulence along the flight path of the aircraft. A
ground mapping function is incorporated to assist with navigation. In addition, a target alert
function (TGT) allows the radar to automatically search for heavy rainfall returns and provide an
alert to the pilot.
An optional lightning detection system may be installed, and is presented on the weather radar
displays.
The weather and map information can be overlaid on ROSE and PPOS navigation formats of
either or both PFDs and MFDs.
Receiver Transmitter Antenna (RTA)
The receiver transmitter antenna is an integrated unit with a 14-inch flat-plate antenna. The
radar scan is ±60 degrees of the aircraft heading, and the selectable antenna tilt angle is ±15
degrees above and below the horizontal.
The RTA is powered by DC bus 1.
Weather Radar Controls
Weather radar controls are provided by the DCPs. These controls are:
• Radar menu (RDR MENU) pushbutton
• RADAR pushbutton
• RANGE/TILT/PUSH AUTO TILT button
• RANGE knob
• TILT knob
• PUSH/AUTO/TILT button
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−5
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
WEATHER RADAR SYSTEM (CONT'D)
Display Control Panel (DCP) − Weather Radar Controls
Figure 17−10−4
Each pilot and copilot PFD/MFD radar display is controlled by the on-side DCP, and is updated on
alternate sweeps of the antenna. With two DCPs, the radar operates as two independent systems.
Overlay Controls
A dedicated multiple press TR/WX pushbutton is provided on both the DCP and CCP, to allow
direct access to the list of radar and lightning overlays for display on the PFD/MFD navigation
formats. The first press of the TR/WX pushbutton selects the next overlay available on the PFD.
A subsequent press selects the next overlay available within the menu.
DCP & CCP TR/WX Direct Access Pushbuttons Menu
Figure 17−10−5
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−6
Oct 05/06
　
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