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FD Switch:
Used to remove Flight Director command bars from the PFD not selected by the Flight Director.
PILOT’S PFD COPILOT’S PFD
GF0410_028
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
FLIGHT DIRECTOR MODES
VERTICAL MODES
Switch (guidance panel) Mode Annunciation
FLC FLC
None Automatic Altitude Preselect ASEL
ALT ALT
VS Vertical Speed Hold VS
VNAV
Vertical Navigation Modes
VFLC Requested by FMS
VASEL VALT VPTH
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
The following are the lateral modes of operation:
Roll (ROL) Mode
Roll mode is automatically selected, when no other lateral mode is active and the autopilot is engaged. Roll mode generates commands to hold the heading that exists when the mode is initiated, unless the roll angle upon initiation is over 6° (commands are then generated to hold the roll angle). The roll mode reference is reset to the current heading, or current roll angle, upon AP engagement. The maximum bank angle in roll mode is 35°.
ROL mode is annunciated in the lateral capture field on the PFD. Roll mode is cleared by selecting another lateral mode. ROL will flash for 5 seconds, when active.
GF0410_033
Heading Select (HDG) Mode
The heading select mode is activated via the HDG button on the guidance panel. The heading select mode is automatically activated whenever a navigation ( NAV) mode, approach (APR) mode or back course (BC) is armed. While in HDG mode, all armed roll flight director modes are available, but a capture of any armed roll mode will cancel the heading select mode.
Active. “HDG”will flash for approximately 5 seconds, when active.
HDG Switch:
When selected, activates heading mode.
HDG Knob:
Turn to set the heading bug on the HSI.
PUSH SYNC:
bug to present heading.
GF0410_035
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
AUTOMATIC FLIGHT CONTROL SYSTEM
MODES OF OPERATION: (LATERAL) (CONT'D)
Heading Select (HDG) Mode (Cont’d)
If the heading bug is turned through more than 180° but less than 360° (airborne), the FGC will follow the bug all the way around to the target and not turn in the shortest arc. The FGC provides guidance to the selected target using the shortest arc when on the ground. The on-ground logic will prevent the airplane from turning in the wrong direction following take-off, due to maneuvering the airplane may have done on the ground.
While in BANK mode, roll rate commanded by the heading mode is limited to 4°/sec. If the roll angle is less than or equal to 6° when ascending through an altitude of 35,050 feet, the FGC shall automatically transition to the low bank limit of 17°. If the roll angle is greater than 6°, an automatic bank limit transition will not occur until the roll angle is reduced to less than or equal to 6°.
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