What is the primary purpose of the altitude alert system in an aircraft?

The primary purpose of the altitude alert system is to warn pilots of altitude changes and deviations from a selected altitude. This system plays a crucial role in maintaining safety during various phases of flight, particularly during climbs and descents. It provides an alert when the aircraft approaches a pre-selected altitude, ensuring the pilot is aware of any altitude changes that may occur, which is vital for effective altitude management.

This capability helps prevent unintentional violations of altitude assignments, which can lead to hazardous situations, especially in busy airspace. Therefore, by providing timely notifications regarding altitude adjustments, the altitude alert system enhances situational awareness and supports compliance with air traffic control instructions.