Automatic flight control system – Garmin G1000 Socata TBM 850 User Manual

Page 411

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190-00709-01 Rev. A

Garmin G1000 Pilot’s Guide for the Socata TBM 850

399

AUTOMATIC FLIGHT CONTROL SYSTEM

SY

STEM

O

VER
VIEW

FLIGHT

INSTRUMENTS

EAS

AUDIO P

ANEL

& CNS

FLIGHT

MANA

GEMENT

HAZARD

AV

OID
ANCE

AFCS

ADDITIONAL

FEA
TURES

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 procedure 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’ (Pitch Trim Failure) is displayed as
the AFCS Status Annunciation on the PFDs. The function remains disabled until
both sides of the switch are inactivated.

MEYT Switch

(Manual Electric
Yaw Trim)

Used to command manual electric yaw trim

An MEYT Switch is located on each control wheel.

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