On losing two-way radio communication, the transponder is set to
- A.Mode A 7500
- B.Mode A 7600 with Mode C
- C.Mode A 7700
Show answer
B. Mode A 7600 with Mode C
Radio failure is 7600, keeping Mode C on so ATC still sees your level. ATC can then check how far the failure goes by asking you to squawk IDENT or change code.