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message is presented on the PFD. If, after 5 seconds, the comparison disagreement is still valid,
the flashing message is replaced by a steady message, and the EFIS MISCOMP caution message
is displayed on the EICAS page.
The messages are displayed as long as the comparison error exists. If the comparison monitor
fails, the EFIS COMP INOP caution message is displayed on the EICAS page.
PFD Comparison Monitor Annunciations
Heading (HDG)
The HDG annunciation is displayed when a difference of more than 6 degrees is detected
between each IRS system.
Pitch Attitude (PIT)
The PIT annunciation is displayed when a difference of more than 4 degrees before glideslope
capture and 3 degrees after glideslope capture is detected.
Roll Attitude (ROL)
The ROL annunciation is displayed when a difference of more than 4 degrees before glideslope
capture and 3 degrees after glideslope capture is detected.
Attitude (ATT)
The ATT annunciation is displayed for a dual axis miscompare (PIT and ROL).
Indicated Airspeed (IAS)
The IAS annunciation is displayed when a difference of more than 10 knots is detected.
Mach Airspeed (MACH)
The MACH annunciation is displayed when a difference of more than 0.03 Mach is detected.
Altitude (ALT)
The ALT annunciation is displayed when a difference of more than 60 feet at sea level is
detected. The allowable difference between PFDs increases with increasing altitude.
Localizer (LOC)
The LOC annunciation is displayed when a difference is detected between the two localizer
receivers.
FLIGHT INSTRUMENTS
Description
Vol. 2 11−10−48
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
EFIS COMPARATOR MONITOR (CONT'D)
CAT II Excessive Deviation*
When an excessive LOC deviation occurs, the LOC lateral deviation pointer flashes in yellow
for the duration of excessive deviation.
Glideslope (GS)
The GS annunciation is displayed when a difference is detected between the two glideslope
receivers.
CAT II Excessive Deviation*
When an excessive GS deviation occurs, the GS vertical deviation pointer flashes in yellow for
the duration of excessive deviation.
Radio Altimeter (RA)
The RA annunciation is displayed when the radio altimeters are indicating below 1,000 feet AGL
and a difference is detected.
Flight Director (FD)
The FD annunciation is displayed when a difference in pitch command or roll command is
detected between the FCCs.
FMS V-Speed (VSPD)
The VSPD annunciation is displayed when a cross-side FMS V-speed difference of more than 2
knots is detected.
NOTE
* Category II is enabled when:
• Left PFD active NAV source is LOC1 and right PFD active NAV
source is LOC2, and both sides LOC frequencies are identical
and valid;
• Not in BACK COURSE;
• No go-around mode;
• Radio altitude is below 600 feet;
• RA MIN is below 200 feet; and
• Expanded localizer is enabled.
FLIGHT INSTRUMENTS
Description
Vol. 2 11−10−49
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
EFIS COMPARATOR MONITOR (CONT'D)
Comparator Annunciations
Figure 11−10−43
DISPLAY REVERSION
Detailed description of EICAS display reversion is provided in Chapter 3, Aural/Visual Warnings.
Description
The reversionary panel allows the management of the basic configuration (either PFD or MFD) of
the AFDs, and controls the location of the EICAS page.
FLIGHT INSTRUMENTS
Description
Vol. 2 11−10−50
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
DISPLAY REVERSION (CONT'D)
The reversionary panel can also be used to regain information lost due to an AFD failure. A PFD
can be displayed on either the inboard or outboard AFD, and can be configured with EICAS
compressed or uncompressed. The compression state of the PFD depends upon the position of
the EICAS reversion switch (see Chapter 3, Aural/Visual Warnings).
If an MFD fails, the pilot has the capability of manually selecting engine data on either the
remaining MFD, or both of the PFDs (in a compressed format).
If a PFD fails, the remaining MFD can be reverted into a PFD via the appropriate display reversion
switch selection. Placing a PFD inboard will not necessarily compress it to show compressed
EICAS. Compression of the PFD depends solely on the position of the EICAS selector.
Reversion Normal Switch Selections
Figure 11−10−44
PFD Display Reversion
L-PFD Failure
Turning the L DISPLAYS selector knob to MFD REV reverts the L−MFD to a compressed
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