Garmin G1000 King Air C90GT - Manual (Page 415)

190-00663-01 Rev. A Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT 401
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
ADDITIONAL AFCS CONTROLS
The following AFCS controls are located separately from the AFCS Control Unit:
AP/YD DISC TRIM
INTRPT Switch
(Autopilot
Disconnect/Trim
Interrupt)
Disengages the autopilot, yaw damper, and flight director and interrupts pitch trim
operation
An AP/YD 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 Button
(Go Around)
Disengages the autopilot and selects flight director Takeoff (on ground) or Go Around
(in air) Mode
If an approach procedure is loaded this button 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 Button is located on the left 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.