ATPL: The BFO selector switch on the ADF control panel must be in the 'on' position to enable the pilot to:
Domanda 66, Radio Navigation - ATPL - Airline Transport Pilot license
| Adjust the loop to the aural null position |
| Hear the IDENT of NDBs using NON A1A transmissions |
| Hear the IDENT of NDBs using NON A2A transmissions |
| Stop the loop rotation |
