Localizer performance with vertical guidance: Difference between revisions

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| accessdate=2010-02-07

| archiveurl=https://web.archive.org/web/20090101015436/http://waasfms.com/waas-interface/lpv-approach-capability.htm

| archivedate=2009-01-01}}</ref> Lateral guidance is equivalent to a [[localizer]], and uses a ground-independent electronic glide path. Thus, the [[Decisiondecision altitude|Decision Altitude]], DA, can be as low as 200 feet. An LPV approach is an approach with vertical guidance, APV, to distinguish it from a precision approach, PA, or a non-precision approach, NPA. WAAS criteria includes a vertical alarm limit more than 12 m, but less than 50 m, yet an LPV does not meet the [[ICAO]] Annex 10 precision approach standard.<ref name="FAA">{{cite book |title=Instrument Procedures Handbook, FAA-H-8083-16B |date=2017 |publisher=US Dept. of Transportation, FAA Flight Standards Service |page=G-6,4-26,4-50 |url=https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/instrument_procedures_handbook/media/FAA-H-8083-16B.pdf}}</ref>

Examples of receivers providing LPV capability include (from [[Garmin]]) the GTN 7xx & 6xx, GNS 480, GNS 430W & 530W, and the post 2007 [[Garmin G1000]] with GIA 63W. Various FMS models, GNSS receivers and FMS upgrades are available from [[Rockwell Collins]] (e.g.<ref>http://www.rockwellcollins.com/~/media/Files/Unsecure/Marketing%20Bulletins%20Rev1/BRS/MBLPV%20FMS%20Upgrade%20for%20CRJ200CL850%20BRS110403.ashx</ref>). Most new aircraft and helicopters equipped with integrated flight decks such as Rockwell Collins ProLine (TM) 21 and ProLine Fusion (TM) are LPV-capable.<ref>{{cite web|url=https://www.rockwellcollins.com/Data/Products/Integrated_Systems/Flight_Deck/Pro_Line_Fusion.aspx|title=Pro Line Fusion®|publisher=}}</ref> In 2014, Avidyne began equipping general aviation and business aircraft with the IFD540 and IFD440 Navigatorsnavigators incorporating a touch-screen Flight[[flight Managementmanagement Systemsystem]] with full LPV capability.<ref>{{cite web|url=http://www.avidyne.com/products/ifd/index.html|title=Avidyne®|publisher=}}</ref>

Examples of receivers providing LPV capability include (from [[Garmin]]) the GTN 7xx & 6xx, GNS 480, GNS 430W & 530W, and the post 2007 [[Garmin G1000]] with GIA 63W.

Various FMS models, GNSS receivers and FMS upgrades are available from [[Rockwell Collins]] (e.g.<ref>http://www.rockwellcollins.com/~/media/Files/Unsecure/Marketing%20Bulletins%20Rev1/BRS/MBLPV%20FMS%20Upgrade%20for%20CRJ200CL850%20BRS110403.ashx</ref>). Most new aircraft and helicopters equipped with integrated flight decks such as Rockwell Collins ProLine (TM) 21 and ProLine Fusion (TM) are LPV-capable.<ref>{{cite web|url=https://www.rockwellcollins.com/Data/Products/Integrated_Systems/Flight_Deck/Pro_Line_Fusion.aspx|title=Pro Line Fusion®|publisher=}}</ref> In 2014, Avidyne began equipping general aviation and business aircraft with the IFD540 and IFD440 Navigators incorporating a touch-screen Flight Management System with full LPV capability.<ref>{{cite web|url=http://www.avidyne.com/products/ifd/index.html|title=Avidyne®|publisher=}}</ref>

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 has published 3,567 LPV approaches at 1,739 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==