- DF (direction finder) guidance
- The guidance given to aircraft in distress or to other aircraft that request the service. Headings are provided to aircraft by facilities equipped with DF (direction-finding) equipment. These headings, if followed, will lead the aircraft to a predetermined point such as the radio direction-finding station or an airport. Practice DF guidance is provided when workload permits. Also called DF steer.
Aviation dictionary. 2014.
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