![]() A circling approach is actuallyĪ procedure based on the aircraft's approach category, not the source of the navigationalĪid signal. If you have the properĮquipment, you can take advantage of these new procedures. Since obstacles raise approach minima, the smaller theĬhance of obstacles, the greater the opportunity for lower minimums. Smaller integrity limits allow smaller obstacle evaluation areas (OEAs). Improved accuracy and alerting capabilities, which result in smaller integrity limits. Evolutions in avionics and satellite navigation systems have GPS provides an instrument approach capability for airports that in the past have not hadĮither the ground-based navigational aids (NAVAIDs), and/or terrain that supported an (VFR and IFR) flying, reducing circuitous travel and airspace incursions. GPS vastly improves situational awareness for both visual and instrument flight rule Requirements to fly each of these different instrument approach procedures. You know which minima line you can fly? This article clarifies the nomenclature and Navigation (VNAV), Localizer Performance with Vertical Guidance (LPV), and circling. Minima, which now include: conventional overlays, Lateral Navigation (LNAV), LNAV/Vertical ![]() Increased the types of GPS and Area Navigation (RNAV) instrument procedures and associated The Global Positioning System (GPS) has revolutionized the manner in which we fly.Īdditional GPS improvements have lowered instrument approach minimums. Please see the PDF version of this document for associated graphics. GPS Approach Minima - How Low Can You Go?
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