Plain English Meaning

A regular published instrument approach into an airport. It is the normal version of the approach, written assuming everything the chart calls for is working as expected.

Full Definition

An instrument approach procedure that has been flight-checked and published for civil aviation use, designed and constructed assuming all listed required navigation, communication, and aircraft equipment is operating normally. Standard IAPs appear as the published charted procedures pilots fly into airports and form the baseline against which substitutions for inoperative or unusable components are measured.

Context Anchor

Seen on instrument approach charts and in discussions about whether an approach can still be used when a required part of the is not working.