What is the primary purpose of the Altimeter in the Warrior PA-28A?

The primary purpose of the altimeter in the Warrior PA-28A is to determine altitude. This instrument measures the atmospheric pressure outside the aircraft and translates that into an altitude reading based on standard atmospheric conditions. For pilots, knowing the altitude is crucial for safe navigation and maintaining proper terrain clearance, as well as adhering to air traffic control instructions and regulations.

While other instruments serve different purposes—such as airspeed indicators for measuring speed, heading indicators for establishing direction, and vertical speed indicators for monitoring climb or descent rates—none of these replace the essential function of the altimeter in providing altitude information. This accurate altitude assessment is vital for all phases of flight, including takeoff, cruising, and landing.