MacDonald, Alexander Forsyth, 1897-1965 · Port Credit, Ont. : Aviation Service Corporation · leaf 68
0° West. Similarly, Fig. 7, when the needle is deflected Eastof the True Meridian, the compass card is rotated so thata smaller reading is opposite the Lvibber Line—i.e., thecompass now reads 320° instead of 360°, or 40° lessthan it should. (Note: North may be read as either 0°or 360°.) Hence:… … Variation 40 It is necessary for a pilot to be able to convert TrueHeadings and Bearings to Magnetic Headings andBearings, and vice versa, rapidly in the air. To convert Magnetic to True: Subtract Westerly VariationAdd Easterly Variation 64 From The Ground lip To convert True to Magnetic: Add…
Airplanes
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