The FAA's Wide Area Augmentation System (WAAS), first commissioned in 2003 and now fully operational, is providing large-scale benefits for operators flying WAAS-equipped aircraft. The system provides the levels of accuracy, integrity, continuity and availability needed to transform GPS from a supplemental-means navigation system into a primary- or sole-means nav system. It's a key element in the FAA's master plan to transition from ground-based navaids to satellite navigation, thereby improving airspace system efficiency and reducing the agency's operating costs - or so it is hoped.
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