The heading indicator displays the heading, or direction the aircraft’s nose is pointed in relative to magnetic north. The heading indicator (HI) is a primary flight instrument that is part of the basic aviation “six pack.” You may also hear this instrument referred to as the Directional Gyro (DG) or Directional Indicator (DI). What is a heading indicator in an aircraft? Ready for an instrumentation refresher? Let’s get started. Today we’re going back to ground school basics as we talk about what a heading indicator is, how it works, and what type of errors it is prone to (plus how to deal with them). This is why an accurate directional device like a heading indicator is such an important aircraft instrument. You won’t get far if you don’t know where you’re going, and if you fly in the wrong direction, it could be disastrous.
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