Attitude gyros, also known as artificial horizons, are used to display the aircraft's position in relation to the horizon. There are several derivatives of attitude gyros that can be used interchangeably. These synonyms include attitude indicators, gyroscopic flight instruments, and horizon reference systems. All these instruments work on the same principle of maintaining the equilibrium and defining the attitude of the aircraft in the air. The attitude gyro is a critical component of aviation, providing the pilots with a source of reliable and accurate information about the aircraft's orientation in flight. Regardless of the synonym used, attitude gyros are vital for the safe operation of any aircraft, particularly during instrument flight.