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Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 04-01-11
FLIGHT DIRECTOR LATERAL MODES (Cont)
APPR MODE
The approach mode is selected by pressing the APPR button on the FGP. In this mode, the flight director generates commands
to capture and track lateral guidance for localizer, VOR, and FMS approaches. The approach mode can be cleared
in one of the following ways:
- Pushing APPR button again
- Selecting another lateral mode
- Changing the frequency of the onside navigation signal
- Changing the onside navigation source
- Turning off the Flight Directors with autopilot disengaged and APPR as the active lateral mode
- Change the coupled side when APPR mode is active
The lateral approach mode generates commands to capture and track the signal from the navigation source displayed on
PFD. The approach mode can be selected, but it will not capture until the onside PFD’s active nav source is valid and capture
criteria has been met (except for FMS). Selection of an approach mode arms each FGC’s lateral guidance to the onside
nav source. The capture point is independently determined for each FGC.
1/2 Bank mode is automatically deselected when APPR mode is selected.
CFO0401002_012
00
IAS 225
M
.54
.50
.42
.38
4200
4
2
1
1
4
APPR VOR1 AP YD
20
10
20
10
350 16000
350 00
4
3
100
00
00
352 00
80
20
2
29.92 IN
.46
.46
.5
1
UTC
° C
11 : 42
SAT -15
ISA -5 ° C
1
AUTOMATIC FLIGHT CONTROL SYSTEM
Volume 2 Flight Crew Operating Manual Sep 13/2004
04-01-12 CSP 100-6 REV 1
FLIGHT DIRECTOR LATERAL MODES (Cont)
B/C MODE
The localizer/back course mode can be selected by pushing the B/C button on the FGP. Back course mode can be deselected
in one of the following ways:
- Pressing the B/C button again
- Selecting another lateral mode
- Changing the frequency of the navigation signal
- Changing the preselect navigation source (other than changing to localizer)
Back course mode generates the command to capture and track the back course signal from the selected LOC source, displayed
on the PFD. Upon back course mode selection, the flight director will arm to capture the signal from the selected
nav source. If the flight director is in nav mode capturing/tracking FMS (with the LOC as preselect source) it will continue
to track FMS and arm for LOC capture.
Back course capture clears half bank and heading modes. Back course mode is annunciated on the PFD with two messages:
green in the lateral capture field indicating captured NAV source and also green in the lateral arm field, which identifies
the armed NAV source (B/C1 or B/C2).
CFO0401002_013
00
IAS 225
M
.54
.50
.42
.38
4200
4
2
1
1
4
APPR B/C 2 AP YD ALTS
20
10
20
10
350 16000
350 00
4
3
100
00
00
352 00
80
20
2
29.92 IN
.46
.46
.5
1
UTC
° C
11 : 42
SAT -15
ISA -5 ° C
1
AUTOMATIC FLIGHT CONTROL SYSTEM
May 06/2005 Flight Crew Operating Manual Volume 2
REV 2 CSP 100-6 04-01-13
FLIGHT DIRECTOR LATERAL MODES (Cont)
1/2 BANK MODE
Half bank mode can be manually selected by pushing the 1/2 BANK button on the FGP except when any of the following
modes is active; Approach Capture or Track, NAV Capture or Track in LOC or GA. It will be automatically selected when
climbing through 31 600 ft. pressure altitude (the half bank transition altitude) or if the aircraft is above that altitude when
the flight director is turned on. This mode selection is inhibited when the aircraft is in takeoff mode, go around
mode, approach mode capture or localizer capture.
The Half Bank Mode is manually cleared by pushing the 1/2 BANK button again. This mode is automatically cleared when
descending through the half bank transition altitude, by takeoff mode, by go-around mode, by approach capture or any localizer
capture.
The Half Bank Mode reduces the maximum commanded bank angle to 15°. Half Bank Mode has no effect on roll mode
operation. Half Bank Mode is annunciated by a green arc drawn above the roll scale index marks on the PFD. The length
of the mark represents +/- 15° of roll.
FLIGHT DIRECTOR VERTICAL MODES
There are 10 vertical flight director modes.
- Pitch (PTCH)
- Altitude preselect (ALTS)/Altitude hold (ALT)
- Takeoff (TO)
　
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