Which instruments are part of the gyro instrument group?

The instruments that are part of the gyro instrument group include the Heading Indicator and the Turn Coordinator. These instruments rely on gyroscopic principles to provide information about the aircraft's orientation and movement.

The Heading Indicator uses a gyroscope to help pilots maintain a specific course by indicating the aircraft's heading relative to magnetic north. It is crucial for navigation, especially in conditions where visual references may be limited.

The Turn Coordinator, on the other hand, displays the rate of turn and helps pilots maintain coordinated flight. It indicates whether the turn is of an appropriate rate and if it is coordinated, which is essential for safety and control of the aircraft.

In contrast, the Altimeter and Airspeed Indicator measure pressure and speed respectively, but they do not utilize gyroscopic technology, making them part of a different instrument category. Similarly, the Vertical Speed Indicator (VSI) provides rate of climb or descent information through a different mechanism, making the Attitude Indicator and VSI not part of the gyro instrument group.