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Thread: Vasi / Papi
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Old 13th September 2004 | 17:41
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604guy
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: ATPL
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From: Canada
Generally in Canada, as I suspect most jurisdictions, VASIS and PAPI relate to the type of aircraft that the airport is intended to serve. Consequently you may have V1 (2-bar VASIS for aircraft with an EWH of up to 3 metres) V2 (2-bar VASIS for aircraft with an EWH of up to 7.5 metres and V3 (3-bar VASIS with an EWH of up 14 metres). Similarly the same criteria apply to PAPI, P1, P2 and P3. The nice thing about the V3 system is that it can serve a wide variety of aircraft on the same runway. The upwind and the middle bars for aircraft with EWH of up to 14 metres (i.e. B747) and the middle and downwind bars for more “conventional” aircraft. Also when there is both VASIS and a precision guidance system serving the same runway the VASIS are normally turned off in conditions of low ceiling and or low visibility to preclude the possibility of any contradiction.

Not quite answering the original post I realize but offered for what it’s worth.
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