19-01-2012, 01:49 PM
RANGING & LANDING SYSTEMS
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The VHF Omni-directional Radio Range is the abbreviations for which are ‘VOR’ and ‘Omni’, enables a pilot to determine the direction of his aircraft from any position to or from a VOR beacon
range
VOR is a Very High Frequency (VHF) navigation aid which operates, its ground to air range is limited to ‘line of sight’ reception which is typical of VHF transmission. The range achieved is dependent, therefore, on the siting of the VOR beacon with relation to surrounding terrain, and on the height at which the aircraft is flying
Airplane receiving equipment
(1) an Omni bearing selector (OBS) sometimes referred to as the course selector,
(2) a course deviation indicator needle (Left-Right Needle), and
(3) a TO-FROM indicator
