Garmin Flight Deck 100 Manuel D’Utilisation

190-00728-04  Rev. A

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While flying the arrival procedure, the aircraft is cleared for descent in preparation for the approach to KCOS.

Three methods are presented for descent:

• Flight Level Change descent – Flight Level Change Mode can be used to descend to the Selected Altitude at a

constant airspeed.  This descent method does not account for flight plan waypoint altitude constraints.

• Vertical  Path  Tracking  descent  –  Vertical  Path  Tracking  Mode  is  used  to  follow  the  vertical  descent  path

defined in the GPS flight plan. Altitude constraints correspond to waypoints in the flight plan. Before VNV
flight control can provide vertical profile guidance, a VNV flight plan must be entered and enabled.

• Non-path descent in a VNV scenario – A VNV flight plan is entered and enabled however, Pitch Hold, Vertical

Speed, or Flight Level Change Mode can be used to descend to the VNV Target Altitude prior to reaching the
planned TOD. Flight Level Change Mode is used in the example.

Select Flight Level Change Mode:

Using the ALT SEL Knob, set the Selected Altitude to 10,000 feet.

Press the FLC Key to activate Flight Level Change Mode.  The annunciation ‘FLC’ appears in the AFCS Status Box 
and the Airspeed Reference (above the Airspeed Indicator) defaults to the current aircraft airspeed.  Selected 
Altitude Capture Mode is armed automatically.

If desired press the SPD SEL Knob to change the Airspeed Reference units to Mach.

Use the SPD SEL Knob or push the CWS Button while hand-flying the aircraft to adjust the commanded 
airspeed while maintaining the same power, or reduce power to allow descent in Flight Level Change Mode 
while the autopilot maintains the current airspeed.

As the aircraft nears the Selected Altitude, the flight director transitions to Selected Altitude Capture Mode, 
indicated by the green ‘ALTS’ annunciation flashing for up to 5 seconds.

The green ‘ALT’ annunciation flashes for up to 5 seconds upon reaching 50 feet from the Selected Altitude; the 
autopilot transitions to Altitude Hold Mode and levels the aircraft.

Cruise Altitude of 12,000 MSL 

Selected Altitude of 10,000 MSL 

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