Garmin G1000 Pilot’s Guide for the Socata TBM 850
190-00709-00 Rev. A
7-20
AUTOMATIC FLIGHT CONTROL SYSTEM
GLIDEPATH MODE (GP)
NOTE:
Pressing the
CWS
Button while Glidepath Mode is active does not cancel the mode. The autopilot
guides the aircraft back to the glidepath upon release of the
CWS
Button.
Glidepath Mode is used to track the WAAS-based glidepath. When Glidepath Mode is armed, ‘GP’ is
annunciated in white in the AFCS Status Box.
Selecting Glidepath Mode:
1)
Ensure a GPS approach with vertical guidance (LPV, LNAV/VNAV, LNAV+V) is loaded into the active flight plan.
The active waypoint must be part of the flight plan (cannot be a direct-to a waypoint not in the flight plan).
2)
Ensure that GPS is the selected navigation source (use the
CDI
Softkey to cycle through navigation sources if
necessary).
3)
Press the
APR
Key.
Upon reaching the glidepath, the flight director transitions to Glidepath Mode and begins to capture and
track the glidepath.
Figure 7-18 Glidepath Mode Armed
Once the following conditions have been met, the glidepath can be captured:
• The active waypoint is at or after the final approach fix (FAF).
• Vertical deviation is valid.
• The CDI is at less than full scale deviation
• Automatic sequencing of waypoints has not been suspended (no ‘SUSP’ annunciation on the HSI)
LNAV/VNAV
Approach
Active
Glidepath
Indicator
GPS is
Selected
Navigation
Source
Command
Bars Indicate
Descent on
Glidepath
Figure 7-19 Glidepath Mode
Glidepath
Mode Active
GPS Approach
Mode Active
