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FEATURES APPENDICES INDEX
The following AFCS controls are located separately from the AFCS Control Unit:
AP DISC Switch
(Autopilot Disconnect)
Disengages the autopilot, yaw damper, and flight director and interrupts pitch trim operation
An AP DISC Switch is located on each control wheel.
This switch may be used to acknowledge an autopilot disconnect alert and mute the associated aural tone.
CWS Button
(Control Wheel Steering)
While pressed, allows manual control of the aircraft while the autopilot is engaged and synchronizes the flight director’s Command Bars with the current aircraft pitch (if not in a Vertical Navigation, Glideslope, or Glidepath Mode) and roll (if in Roll Hold Mode)
A CWS Button is located on each control wheel.
Upon release of the CWS Button, the flight director may establish new pitch and roll references, depending on the current vertical and lateral modes. CWS operation details are discussed in the respective mode sections of this manual.
GA Switch
(Go Around)
Disengages the autopilot and selects flight director Takeoff (on ground) or Go Around (in air) Mode
If an approach procedures is loaded this switch also activates the missed approach when the selected navigation source is GPS or when the navigation source is VOR/LOC and a valid frequency has been tuned.
The GA Switch is located on the throttle.
MEPT Switch
(Manual Electric Pitch Trim)
Used to command manual electric pitch trim
An MEPT Switch is located on each control wheel.
This composite switch is split into left and right sides. The left switch is the ARM contact and the right switch controls the DN (forward) and UP (rearward) contacts. Pushing the MEPT ARM Switch disengages the autopilot, if currently engaged, but does not affect yaw damper operation. The MEPT ARM Switch may be used to acknowledge an autopilot disconnect alert and mute the associated aural tone.
Manual trim commands are generated only when both sides of the switch are operated simultaneously. If either side of the switch is active separately for more than three seconds, MEPT function is disabled and ‘PTRM’ is displayed as the AFCS Status Annunciation on the PFDs. The function remains disabled until both sides of the switch are inactivated.
366 Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 190-00494-02 Rev. B
Automatic utomatic utomatic Flight Control System ystem
SYSTEM
OVERVIEW
FLIGHT
AUDIO PANEL EICAS INSTRUMENTS
& CNS
FLIGHT
MANAGEMENT
HAZARD
ADDITIONAL AFCS AVOIDANCE
INDEX APPENDICES FEATURES
7.2 Flight Directorirector Operationperation
The flight director function provides pitch and roll commands to the AFCS and displays them on the PFDs. With the flight director active, the aircraft can be hand-flown to follow the path shown by the Command Bars. Maximum commanded pitch (±20°) and roll (30°) angles, vertical acceleration, and roll rate are limited to values established during AFCS certification. The flight director also provides commands to the autopilot.
Activatingctivatingctivating the Flight Directorirector
An initial press of a key listed in Table 7-1 (when the flight director is not active) activates the pilot-side flight director in the listed modes. The flight director may be turned off and the Command Bars removed from the displays by pressing the FD Key again. The FD Key is disabled when the autopilot is engaged.
Control Pressed
Modes Selected
Lateral
Vertical
FD Key
Roll Hold (default)
ROL
Pitch Hold (default)
PIT
AP Key
Roll Hold (default)
ROL
Pitch Hold (default)
PIT
CWS Button
Roll Hold (default)
ROL
Pitch Hold (default)
PIT
GA Switch
Takeoff (on ground)
Go Around (in air)
TO
GA
Takeoff (on ground)
Go Around (in air)
TO
GA
ALT Key
Roll Hold (default)
ROL
Altitude Hold
ALT
VS Key
Roll Hold (default)
ROL
Vertical Speed
VS
VNV Key
Roll Hold (default)
ROL
Vertical Path Tracking*
VPTH
NAV Key
Navigation**
GPS
VOR
LOC
Pitch Hold (default)
PIT
BC Key
Backcourse***
BC
Pitch Hold (default)
PIT
APR Key
Approach**
GPS
VOR
LOC
Pitch Hold (default)
PIT
HDG Key
Heading Select
HDG
Pitch Hold (default)
PIT
*Valid VNV flight plan must be entered before VNV Key press activates flight director.
**The selected navigation receiver must have a valid VOR or LOC signal or active GPS course before NAV or APR Key press activates flight director.
***The selected navigation receiver must have a valid LOC signal before BC Key press activates flight director.
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Cessna Citation Mustang G1000 Integrated Flight Dec(129)
