Garmin G1000 Pilot’s Guide for the Socata TBM 850
190-00709-00 Rev. A
7-30
AUTOMATIC FLIGHT CONTROL SYSTEM
BACKCOURSE MODE (BC)
NOTE: When making a backcourse approach, set the Selected Course to the localizer front course.
Backcourse Mode captures and tracks a localizer signal in the backcourse direction. The mode may be
selected by pressing the BC Key. Backcourse Mode is armed if the CDI is greater than one dot when the mode
is selected. If the CDI is less than one dot, Backcourse Mode is automatically captured when the BC Key is
pressed. The flight director creates roll steering commands from the Selected Course and deviation when in
Backcourse Mode.
LOC2 is
Selected
Navigation
Source
Pitch Hold
Mode Active
Backcourse
Mode Active
Figure 7-30 Backcourse Mode
CHANGING THE SELECTED COURSE
If the navigation source is VOR or localizer or OBS Mode has been enabled when using GPS, the Selected
Course is controlled using the CRS Knob corresponding to the selected flight director (CRS1 for the pilot
side, CRS2 for the copilot side).
Pressing the
CWS Button and hand-flying the aircraft does not reset any reference data while in Backcourse
Mode. The autopilot guides the aircraft back to the Selected Course when the CWS Button is released.
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