Instrument flight rules
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In aviation, instrument flight rules is one of two sets of regulations governing all aspects of civil aviation aircraft operations; the other is visual flight rules.
IFR flying with clouds below
Non-directional beacon
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A non-directional beacon or non-directional radio beacon is a radio beacon which does not include inherent directional information. Radio beacons are radio transmitters at a known location, used as an
Radio tower of NKR Leimen-Ochsenbach, Germany
NDB transmitter at 49°12′21″N 002°13′12″W / 49.20583°N 2.22000°W / 49.20583; -2.22000 (Jersey West) Callsign JW – 'Jersey West'. 329.0 kHz.
One of the wooden poles of NDB HDL at Plankstadt, Germany
Ferrite antenna for non-directional beacon (NDB), frequency range 255–526.5 kHz