Localizer performance with vertical guidance (LPV) are the highest precision
GPS (
SBAS enabled) aviation
instrument approach
In aviation, an instrument approach or instrument approach procedure (IAP) is a series of predetermined maneuvers for the orderly transfer of an aircraft operating under instrument flight rules from the beginning of the initial approach to a lan ...
procedures currently available without specialized aircrew training requirements, such as
required navigation performance (RNP). Landing minima are usually similar to those of a Cat I
instrument landing system (ILS), that is, a decision height of and visibility of 800 m. Lateral guidance is equivalent to a
localizer, and uses a ground-independent electronic glide path. Thus, the
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. SBAS criteria includes a vertical alarm limit more than 12 m, but less than 50 m, yet an LPV does not meet the
ICAO
The International Civil Aviation Organization (ICAO ) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international sch ...
Annex 10 precision approach standard.
Examples of receivers providing LPV capability include (from
Garmin
Garmin Ltd. is an American multinational technology company based in Olathe, Kansas. The company designs, develops, manufactures, markets, and distributes GPS-enabled products and other navigation, communication, sensor-based, and information ...
) 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
Rockwell Collins, Inc. was a multinational corporation headquartered in Cedar Rapids, Iowa, providing avionics and information technology systems and services to government agencies and aircraft manufacturers. It was formed when the Collins Radi ...
(e.g.). Most new aircraft and helicopters equipped with integrated flight decks such as Rockwell Collins ProLine (TM) 21 and ProLine Fusion (TM) are LPV-capable. 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.
LPV is designed to provide lateral and vertical accuracy 95 percent of the time. Actual performance has exceeded these levels. WAAS has never been observed to have a vertical error greater than 12 metres in its operational history.
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.
See also
*
VNAV
*
LNAV
*
WAAS
*
EGNOS
*
Index of aviation articles
Aviation is the design, development, production, operation, and use of aircraft, especially heavier-than-air aircraft. Articles related to aviation include:
A
Aviation accidents and incidents
– Above Mean Sea Level (AMSL)
– ADF
– Acces ...
References
External links
– FAA – Maximizing Airport Operations Using the Wide Area Augmentation System
{{Webarchive, url=https://web.archive.org/web/20081226080253/http://www8.garmin.com/pressroom/aviation/110906.html , date=2008-12-26 – Garmin Receives WAAS Certification for GNS 400W/500W Series
– FAA's Production Plan for IFR Procedures
– FAA LPV Approaches
Aircraft instruments
Radio navigation
es:LPV
ja:広域航法