air
avionics
3. XPDR Operation
GND Mode
GND mode (All Call Inhibit Mode) is an optional, special XPDR mode that is automatically
engaged if the aircraft is on ground. The installation and correct configuration of an
On-Ground-Switch is required. To indicate this mode, a special GND flag is shown.
MDE IDNT
FL222
7000
ALT
GND Mode Flag
GND
Figure 3.5.: GND mode flag. On-Ground-Switch is required. Due to regulatory requirements,
GND mode can not be selected manually.
ACD-57
·
Pilot’s Manual
·
rev. 1.0
·
2017/01/19
23