Question id 147 - Radio Navigation - ATPL - Airline Transport Pilot license

The correct ICAO 24 bits aircraft address code must be inserted on the control panel.
With the selector knobs the four digits of the squawk can be selected using the decimal symbols 0 through 9.
With ALT selected a reply in the modes A, C and S can be transmitted.
With ON selected a reply in the modes A, C and S can be transmitted.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license