Garmin G950 Pilot's Manual page 131

ALTITUDE MODE (AUTOMATIC OR MANUAL)
Altitude Mode is automatically selected when the aircraft becomes airborne. Altitude Mode may also be
selected manually by pressing the ALT Softkey. Altitude Mode generates Mode A, Mode C, and Mode S replies
as well as transmissions of acquisition and extended squitters including ADS-B out (if equipped).
If Altitude Mode is selected, a green ALT indication and transponder code appear in the mode field of the
Transponder Data Box, and all transponder replies requesting altitude information are provided with pressure
altitude information.
REPLY STATUS
When the transponder sends replies to interrogations, a white R indication appears momentarily in the
reply status field of the Transponder Data Box.
190-00870-02 Rev. A
Figure 4-33 Altitude Mode
Figure 4-34 Reply Indication
Garmin G950 Pilot's Guide for the Pilatus PC-6
AUDIO PANEL AND CNS
ALT Mode
(Mode C Altitude
Reporting)
Reply to
Interrogation
119