non-precision approach
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English[edit]
Alternative forms[edit]
Noun[edit]
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.