precision approach path indicator

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precision approach path indicator (PAPI)

precision approach path indicator (PAPI)click for a larger image
A system of lights arranged to provide visual descent guidance information during the approach to a runway. The system is similar to the VASI (visual approach slope indicator). However, the light units are installed in a single row of either two or four light units on the left side of the runway. These systems have an effective visual range of about 5 miles during the day and up to 20 miles at night. The glide-path indications are as depicted in the illustration.
References in periodicals archive ?
5 million northern and southern runway rehabilitation project, which required the replacement of runway centreline lights, perimeter lights, touchdown zone, taxiway lighting and precision approach path indicators.
Under the terms of the agreement, Carmanah will have the exclusive world-wide marketing license for a portfolio of Laser Guidance aviation navigation aids including versions of Precision Approach Path Indicators ("PAPIs"), Helicopter Approach Path Indicators ("HAPIs") and Medium Intensity Approach Light System with Runway Alignment Indicator Light ("MALSR").
The project will comprise building airport taxiway lighting, precision approach path indicators, runway end identifier lights and directional signs.
Upgraded Movement Areas Guidance Signs (MAGS) were installed at all 42 runway/taxiway entrances, which now include Take Off Runway Available (TORA) information, while Precision Approach Path Indicators (PAPIs) were installed on runways 07/25, 16R/34L and 16L/34R replacing existing T-Visual Approach Slope Indicator System (TVASIS) visual aids.
In three separate contracts in Africa, an ILS, 4 Precision Approach Path Indicators (PAPI), runway lights and 2 VOR/DME systems will be supplied.
The GA Runway will be upgraded with Medium Intensity LED Runway Lights, new LED Runway End Indicator Lights and new LED Precision Approach Path Indicators.
These contracts encompass the full range of airfield lighting systems including approach lighting systems, elevated edge lights, inset lights, apron lighting, precision approach path indicators, signs, constant current regulators, control panels, transformer, cables and installation.
Tenders are invited for install precision approach path indicators (papis) on runway 5-23 .

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