magnetic heading

What Is A Compass Correction Card?

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What Is A Compass Correction Card? Compass correction/deviation card. A small card placed in the cockpit to show the compass deviation for each heading. The card reads the courses to be steered in lieu of the required headings . Also called a deviation card. Is a compass correction card required? So, the compass correction card

Why Do We Need To Align The Heading Indicator With The Magnetic Compass Every 15 Minutes?

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Why Do We Need To Align The Heading Indicator With The Magnetic Compass Every 15 Minutes? The pilot of a light aircraft should check the heading indicator against the magnetic compass at least every 15 minutes to assure accuracy. Because the magnetic compass is subject to certain errors , the pilot should ensure that these