In the event of a compass error, what should a pilot check?

In the event of a compass error, a pilot should check the accuracy of the heading indicator. The heading indicator is an essential instrument that displays the aircraft's orientation relative to magnetic north. If there is a discrepancy between the heading indicated by the compass and the actual heading, it could lead to navigation errors.

When a pilot suspects a compass error, it's crucial to determine whether the heading indicator is properly calibrated and functioning correctly, as it relies on the aircraft's magnetic field to provide accurate readings. If the heading indicator is inaccurate, it may not reflect the true heading of the aircraft, leading to potential misnavigation.

While other factors such as navigational aids or magnetometer calibration can influence navigation, the immediate step to verify the directional accuracy involves checking the heading indicator. Doing so allows the pilot to assess and resolve any discrepancies that could affect safe flight operations.