Instruments

Heading Indicator(HI)

Definition

A gyroscopic instrument showing aircraft magnetic heading without the oscillation errors of a magnetic compass. Must be periodically aligned with the magnetic compass due to precession drift.

Related Terms

Magnetic Compass

The most basic navigation instrument, using a magnetized card to indicate magnet...

Horizontal Situation Indicator(HSI)

A navigation instrument combining a heading indicator with VOR/ILS course deviat...

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