Which instruments are classified as performance instruments?

Performance instruments are specifically designed to provide real-time feedback about how the aircraft responds to pilot inputs. These instruments indicate the results of maneuvers performed by the pilot, reflecting changes in the aircraft's performance and behavior, such as altitude, airspeed, and rate of climb or descent. They are crucial for assessing and managing the aircraft's performance characteristics during flight.

By focusing on the results of pilot control input, performance instruments play a vital role in flight safety and efficiency. Understanding the feedback from these instruments allows pilots to make informed decisions during various phases of flight.