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independent mode. When takeoff mode is active, a green TO annunciation appears in the
vertical active field of the FMA, and ALTS mode is automatically armed to capture the
preselected altitude.
NOTE
The autopilot will disengage whenever a TOGA button is pressed on
the ground or in-flight. The autopilot visual and aural disengage
warnings may be canceled by pushing either TOGA button again, or
by pushing the AP/SP DISC switch.
The vertical component of takeoff mode (TO) normally generates a 12-degree pitch-up
command (14-degree pitch-up command on airplanes NOT incorporating Service Bulletin
604−22−006). Loss of engine during takeoff changes the pitch-up reference to 10 degrees.
Takeoff vertical mode is cleared by
• Selecting or capturing another active mode
• Engaging the autopilot, or
• Pressing the FD SYNC button.
Vertical Takeoff Mode
Figure 04−10−35
AUTOMATIC FLIGHT CONTROL SYSTEM
Description
Vol. 2 04−10−39
REV 74, Nov 07/08
CL−604 Operating Manual
PSP 604−6
FLIGHT DIRECTORS (CONT'D)
Vertical Go-Around Mode
In the air, pushing either TOGA (takeoff/go-around) button, mounted on the thrust levers, selects
the go-around mode and clears all other vertical modes. Lateral and vertical go-around mode
(GA) selections are coincident. During go-around mode, the flight directors operate in dual
independent mode. When go-around mode is active, a green GA annunciation appears in the
vertical active field of the FMA.
NOTE
The autopilot will disengage whenever a TOGA button is pressed on
the ground or in-flight. The autopilot visual and aural disengage
warnings may be canceled by pushing either TOGA button again, or
by pushing the AP/SP DISC switch.
The vertical component of go-around mode (GA) generates a 10-degree pitch-up command.
Go-around vertical mode is cleared by
• Selecting or capturing another active mode
• Engaging the autopilot, or
• Pressing the FD SYNC button.
Vertical Go−Around Mode
Figure 04−10−36
AUTOMATIC FLIGHT CONTROL SYSTEM
Description
Vol. 2 04−10−40
REV 74, Nov 07/08
CL−604 Operating Manual
PSP 604−6
FLIGHT DIRECTORS (CONT'D)
Glideslope Mode
Glideslope mode (GS) generates commands to capture and track the glideslope of an ILS
approach. Each flight director captures independently in approach mode, and operates in the
dual independent configuration.
Glideslope mode become armed automatically when the aircraft is inbound, and in approach
mode (APPR button selected), with less than 105 degrees between heading and LOC course.
When armed, a white GS annunciation appears in the vertical armed field of the FMA.
Glideslope capture can only occur after LOC capture, and is possible from above or below the
glideslope beam. Prior to GS capture, the FCCs operate in the current active vertical mode.
Upon GS capture, the previously active vertical mode clears automatically, and a green GS
annunciation is displayed in the vertical capture field of the FMA. The capture point is a function
of the closure rate, and the capture will always occur if the deviation is less than 10% of
full-scale deflection (under 0.2 dots).
Glideslope mode is cleared by:
• Selection of NAV mode,
• Loss of approach mode, or
• Loss of localizer (NAV SOURCE change or loss of signal).
AUTOMATIC FLIGHT CONTROL SYSTEM
Description
Vol. 2 04−10−41
REV 74, Nov 07/08
CL−604 Operating Manual
PSP 604−6
FLIGHT DIRECTORS (CONT'D)
Vertical Navigation
Pushing the VNAV button on the FCP alternately selects and clears vertical navigation mode.
VNAV is active when it is selected and valid. VNAV is valid when the following conditions are
met:
• An active flight plan with a TO waypoint exists in the FMS
• The active navigation source is either a valid FMS or localizer
• Preselected altitude, barometric altitude, and airspeed or Mach are all valid
When VNAV is active, the letter “V” appears in front of the active/captured vertical mode
annunciation of the FMA. Other distinct VNAV modes may also be annunciated on the vertical
armed or active/captured fields of the FMA.
Selecting vertical navigation mode (VNAV) allows the FMS to provide vertical steering
commands to the flight director to ensure the vertical flight profile of the active flight plan is
honored. With VNAV active, the FMS will automatically sequence the vertical flight modes and
set target airspeeds and altitudes to follow the programmed flight profile. The flight crew may
　
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