non-precision approach

== English == === Alternative forms === nonprecision approach === Noun === non-precision approach (plural non-precision approaches) (aviation) An instrument approach using a guidance system that provides only horizontal, and not vertical, guidance (such as VOR, NDB, or localizer navigation), requiring the pilot to manually maintain terrain clearance by flying at a predefined safe altitude for each segment of the approach by reference to their altimeter. ==== Antonyms ==== precision approach