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Aviation Learning Center Document GPS Approach Minima - How Low Can You Go?
Author: Martin Heller Date: July 2006
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The Global Positioning System (GPS) has revolutionized the manner in which we fly. Additional GPS improvements have lowered instrument approach minimums. These improvements increased the types of GPS and Area Navigation (RNAV) instrument procedures and associated minima, which now include: conventional overlays, Lateral Navigation (LNAV), LNAV/Vertical Navigation (VNAV), Localizer Performance with Vertical Guidance (LPV), and circling. Do you know which minima line you can fly? This article clarifies the nomenclature and requirements to fly each of these different instrument approach procedures.

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