MAGNETIC COURSE - COMPASS COURSE ± deviation.
MAGNETIC NORTH - The magnetic North pole, located near 71° North latitude and 96° West longitude, that attracts a magnetic compass which is not influenced by local magnetic attraction, ...
Magnetic Course: The angle (measured in a clockwise direction) between the course of an aeroplane - that is, the direction steered - and Magnetic North. It is measured on a map from the nearest magnetic meridian.
Flying a magnetic course of 0° - 179°, fly at odd thousands plus 500 feet. For example, 3,500; 5,500; 7,500.
Flying a magnetic course of 180° - 359°, fly at even thousands plus 500 feet. For example, 4,500; 6,500; 8,500.
Magnetic course: Intended horizontal direction, measured in degrees clockwise from the magnetic north.
Mach number: Ratio of true airspeed to the speed of sound. Mach 1 is the speed of sound at sea level. Its value is approximately 760 mph.
If the course selector is rotated until the deviation needle is centered, the radial (magnetic course 'FROM' the station) or its reciprocal (magnetic course 'TO' the station) can be determined.
These are magnetic course radials that extend in all directions from the VOR stations that are shown, surrounded by compass roses, on your chart. The radials can be visualized as spokes of a wheel, all of which converge at a hub--the VOR station.
As a result, every runway is numbered based upon its magnetic or compass orientation; every heading assigned by air traffic control (ATC) is given based upon magnetic course; and every airway, jetway, ...
a chart representing the intended airplane path, expressed as the angle measured from a specific reference datum clockwise from 0° through 360° to the line. The reference can be true north or magnetic north and called true course or magnetic course ...
These are designated highways in the sky in which a magnetic course is flown using the help of a NAVAID or satellite to guide a plane from one destination to another.
Now look along the line from your thumb to finger, and see where it crosses the edge of the compass rose. In this case we find that it crosses at the tickmark that corresponds to 040 degrees, which we take as our approximate magnetic course.
 See also: Navigation, Speed, Track, Direct, Flight
  
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