Plain English Meaning

These are older instrument approaches, built for ground-based navigation aids like VORs, that the FAA has cleared pilots to fly using GPS instead. The approach itself doesn't change — only the navigation tool used to fly it.

Full Definition

Existing non-precision instrument approach procedures — originally designed around ground-based navigation aids such as VOR, NDB, or TACAN — that have been authorized for flight using GPS as the primary navigation source. The approach chart retains its original title (for example, 'VOR or GPS RWY 27') and uses the same fixes, courses, and , but may the using a suitable instead of the underlying -based aid.