##### Automatic Direction Finder (ADF) Automatic Direction Finding, Automatic Direction Finder. An [[electronic]] [[navigational aid]] that identifies a [[relative bearing]] of an aircraft from a radio beacon, such as an [[NDB]] or a commercial [[radio station]]. >Covered in: [[C203 Week 4#Automatic Direction Finding ADF|C203]] >Mentioned in: [[Advanced Avionics Handbook#The Active Waypoint|📗]] >References: [[WP ADF|🌍]] [[Radio Direction Finder|🌍]] [[WalkerJune - ADF.pdf|📄]] >Required by: [[CARs 566 App C#^c6w5cp|CARs]] > >Related to: >[[Understanding ADF|🎞️]] [[ADF Pilot|🎞️]]