Garmin GFC 600H Maintenance Manual page 41

4. Force Trim Servo Engagement
Not Engaged
Servo Active
(Attitude Hold or
Coupled FD)
Out of Detent
Out of Detent
(> 10 sec)
Servo Transition
(active to off)
Single Axis Failure*
FCS Unavailable
* Pitch and roll axes failures result in FCS failure annunciation and will not be shown as
single axes failure. Yaw is the only single axis failure that doesn't result in HFCS failure.
5. Flight Director Engagement
Decoupled, FCS not
engaged
Level Mode
Coupled Flight Director
Decoupled Flight
Director
Decoupled, FCS
Engaged
Decoupled,
Groundspeed Hold
Mode
190-02081-03
Rev. 3
(Not present)
(Not present)
GFC 600H HFCS Part 27 STC Maintenance Manual
(flashing)
(flashing)
(will display as Active Lat and
Vert modes)
(flashing coupled to decoupled;
first 5 seconds)
(will display as Active Lat and/
or Vert mode, depending on if
a single or no axis is engaged
in higher-level mode.)
(will display as Active Lat and/
or Vert mode with valid GPS
and groundspeed below the
hover transition threshold.)
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