What is the term for the lowest safe altitude indicated on a VNC and a Lo Chart?

The term for the lowest safe altitude indicated on a VNC (VFR Navigation Chart) and a Lo Chart (Low Altitude Enroute Chart) is indeed referred to as the Area Minimum Altitude. This altitude ensures sufficient vertical clearance over obstacles and provides a safe margin above terrain in a specific area or route. It is designed to maintain safety during flight operations, helping pilots avoid potential hazards such as mountains, buildings, and other obstructions.

Area Minimum Altitudes are specifically defined for areas where navigation is performed under Visual Flight Rules (VFR) and are used to establish safe operating altitudes throughout various flight paths. This ensures that pilots can navigate confidently, knowing they are flying at a safe altitude above terrain and obstacles, based on the lowest elevations in the defined area.

Understanding the Area Minimum Altitude is crucial for flight planning and navigation, particularly in mountainous regions or densely populated areas where terrain and obstructions may pose a greater risk to flight safety.