| 释义 |
DF guidance DF (direction finder) guidanceThe 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. |