Garmin G3X Pilots Guide - Page 267

System Overview Flight Instruments EIS CNS Interface GPS Navigation Integrated Autopilot ALTITUDE HOLD MODE (ALT) Altitude Hold Mode can be activated by pressing the AP ALT Softkey; the Integrated Autopilot maintains the current aircraft altitude (to the nearest 10 feet) as the Altitude Reference. The Altitude Reference, shown in the G3X Autopilot Status Box, is independent of the Selected Altitude, displayed above the Altimeter. Altitude Hold Mode active is indicated by a green 'ALT' annunciation in the G3X Autopilot Status Box. Altitude Hold Mode is automatically armed when in Selected Altitude Capture Mode. Selected Altitude Capture Mode automatically transitions to Altitude Hold Mode when within 50 feet of the Selected Altitude. In this case, the Selected Altitude becomes the Altitude Reference. CHANGING THE ALTITUDE REFERENCE When operating in Altitude Hold Mode, the Altitude Reference can be adjusted in the following ways: • The Altitude Reference can be adjusted up or down in 10-foot increments by pressing the FMS Joystick up or down. Using this method, up to 200 feet of altitude change can be commanded. To change the Altitude Reference by more the 200 feet, use the CWS button (if equipped) as described below, or climb/descend using another vertical mode (PIT, VS) to capture the desired Selected Altitude. • If the aircraft is equipped with a CWS Button, pressing the CWS Button allows the aircraft to be hand-flown to a new Altitude Reference. When the CWS Button is released at the desired altitude, the new altitude is established as the Altitude Reference. NOTE: While operating in Altitude Hold Mode, using the FMS Joystick to change the Selected Altitude does NOT affect the autopilot (i.e., does not change the Altitude Reference, and does not cancel the mode). Flight Planning Hazard Avoidance Additional Features Integrated Autopilot Annun/Alerts Appendix Index 190-01115-00 Rev. F Garmin G3X Pilot's Guide 249