What does a non-precision approach not provide during the approach?

A non-precision approach is characterized by the lack of vertical guidance, which is a fundamental distinction from a precision approach. In a precision approach, such as those using an Instrument Landing System (ILS), vertical and horizontal guidance is provided to assist pilots in descending to the runway. However, during a non-precision approach, only lateral guidance is available, typically using navigational aids such as VOR or NDB.

This limitation means that pilots must monitor their altitude manually and decide when to descend to the minimum descent altitude (MDA) without automated vertical assistance. Therefore, while they receive valuable information like runway details, standard approach altitudes, and sometimes electronic navigation, non-precision approaches lack that crucial vertical guidance that helps ensure safe landings in various conditions.