VHF omnidirectional range
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A very high frequency omnidirectional range station is a type of short-range VHF radio navigation system for aircraft, enabling aircraft with a VOR receiver to determine the azimuth, referenced to mag
DVOR (Doppler VOR) ground station, collocated with DME.
MCT DVOR, Manchester Airport, United Kingdom.
D-VORTAC TGO (TANGO) Germany
VORTAC located on Upper Table Rock in Jackson County, Oregon
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