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LPV is designed to provide {{convert|25|ft|m}} lateral and vertical accuracy 95 percent of the time.<ref>{{cite web |url=http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/documents/media/waas/2892bC2a.pdf |title=Archived copy |accessdate=2008-02-18 |url-status=dead |archiveurl=https://web.archive.org/web/20081004122449/http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/documents/media/waas/2892bC2a.pdf |archivedate=2008-10-04 }}</ref> Actual performance has exceeded these levels. WAAS has never been observed to have a vertical error greater than 12 metres in its operational history.{{Citation needed|date=June 2013}}
As of September 17, 2015 the Federal Aviation Administration (FAA) has published 3,567 LPV approaches at 1,739 airports. As of October 7, 2021 the FAA has published 4,088 LPV approaches at 1,965 airports. This is greater than the number of published Category I ILS procedures.<ref>{{cite web|url=http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/|title=Satellite Navigation - GPS/WAAS Approaches|publisher=}}</ref>
==See also==
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