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What is a Heading Bug?

April 26, 2017bug Heading

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What is a Heading Bug?

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On select DG and HSI instruments, the selected heading is marked by an orange heading bug that can be moved to any point around the perimeter of the compass card. As the aircraft’s heading changes, the bug rotates with the compass card altering the pilot to the difference between the selected heading and the actual aircraft heading. The heading bug may also be coupled to the autopilot thus producing off heading signals.