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The lateral takeoff mode generates a heading hold command once airborne. The heading hold is based upon the actual air-craft heading at the moment of weight-off-wheels. The mode has a 5° bank angle authority. Lateral takeoff mode is annun-ciated by a green TO in the active lateral field of the PFD.
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HEADING MODE
The HDG switch and knob generate commands to capture and maintain a pilot selected heading. Selected headings are dis-played by a digital heading readout and heading bug on the PFD.
Heading mode is selected by pushing the HDG push button on the FGP. The HDG knob is used to change the selected head-ing command. Pressing the push button in the center of the knob resets the heading bug and digital readout to the current aircraft heading.
Heading mode is indicated by a green HDG in the active lateral field of the PFD.
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Volume 2 Flight Crew Operating Manual May 06/2005 CSP 100-6 REV 2
04-01-08
FLIGHT DIRECTOR LATERAL MODES (Cont)
NAV MODE
This mode is activated by pushing the (NAV) switch on the FGP, and it can be deselected in one of the following ways:
-Pushing NAV switch again
-Selecting another lateral mode
-Changing the frequency of the onside navigation signal
-Changing the NAV source
-Turning off the flight directors with the AP disengaged
-Changing coupled side
Navigation mode generates commands to capture and track the active navigation source, displayed on the PFD. Navigation mode arms when it is selected, but it cannot capture if the FGC is not receiving valid navigation data.
The following are navigation submodes:
-FMS navigation mode
-VOR navigation mode
-LOC and backcourse mode
Prior to capture, the flight director operates in heading mode. The capture point is a function of closure rate. Navigation capture clears the heading select mode. A localizer capture also clears the half bank mode.
Dead reckoning operation is executed during the VOR station passage.
When navigation mode is selected, the active lateral mode is annunciated on the PFD by the green HDG (in lateral capture field) and the armed navigation is annunciated in and a white Nav source identifier (VOR1, VOR2, LOC1, LOC2, FMS1, FMS2 in the lateral arm field). Navigation mode capture/tracking is annunciated on the PFD with a green message in the lateral capture field, which identifies the navigation source (VOR1, VOR2, LOC1, LOC2, FMS1, FMS2). Dead reckoning operation is annunciated on the PFD by a small green DR letters, added to the lateral nav capture annunciation.
The flight director provides a NAV to NAV capture logic that allows automatic transition from FMS navigation to LOC or back course mode, when FMS is the selected NAV source.
May 06/2005 Flight Crew Operating Manual Volume 2 REV 2 CSP 100-6
04-01-09
FLIGHT DIRECTOR LATERAL MODES (Cont)
GO AROUND MODE
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