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When airborne, pressing either TOGA switch activates the lateral and vertical go-around modes. Lateral go-around mode generates a heading hold command with a five degree bank angle authority. Lateral go-around is annunciated with a green GA message in the lateral capture field of the PFD.
Pushing the TOGA switch disengages the autopilot. The resultant autopilot warning may be cancelled by another push of the TOGA switch or by pushing the MWS switch on the control wheel.
GA is deselected if the following occurs:
-Autopilot engagement.
-Another lateral or vertical mode is selected.
-Pressing the SYNC button, which selects pitch and roll modes.
-Turning off the Flight Directors.
-Changing the coupled side.
Selection of GA causes the flight directors to operate independently. Selection of GA mode disengages the autopilot (but not the Yaw Damper), and clears all other existing modes.
Volume 2 Flight Crew Operating Manual May 06/2005 CSP 100-6 REV 2
04-01-10
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 com-mands 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 cap-ture 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
Sep 13/2004 Flight Crew Operating Manual Volume 2 REV 1 CSP 100-6
04-01-11
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, dis-played 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.
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