What is the primary function of the compass in an aircraft?

The primary function of the compass in an aircraft is to provide pilots with a heading reference for navigation. The compass is an essential instrument that helps pilots determine their direction relative to magnetic north. By indicating the aircraft's heading, the compass allows pilots to navigate accurately, ensuring they remain on course and can reach their intended destination safely. Understanding the heading is crucial for flight planning and adhering to air traffic control instructions, making the compass a fundamental navigational tool in aviation.

Other functions, such as measuring altitude, detecting weather changes, or tracking flight speed, are performed by different instruments specifically designed for those purposes, highlighting the unique and critical role of the compass in navigation.