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LPV vis required vs ILS visibilty required

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Flight Instructor

How can an LPV visibilty requirement be lower than an ILS visibilty requirement to the same DA height and same runway? The ILS at KBED has a NOTAM'ed minimum DA 470/HAT 347, VIS 1 mile. The LPV to the same runway is NOTAM'ed to the same DA, but the vis requirement is 3/4 mile. Same runway, same lighting systems, how does the LPV have a lower visibility requirement?

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1 Answers



  1. Russ Roslewski on Oct 28, 2015

    Shouldn’t be different in this case. Looks like they caught it and fixed it, because the current NOTAM has the same 1 sm visibility for both:

    !FDC 5/4119 (KBED A2397/15) BED IAP LAURENCE G HANSCOM FLD, BEDFORD, MA. RNAV (GPS) Z RWY 29, AMDT 1… LPV DA 470/HAT 347, VIS 1 ALL CATS. TEMPORARY CRANE 231 MSL 3079 FT E OF RWY 29. 1510281427-1604251427EST

    !FDC 5/1705 (KBED A2335/15) BED IAP LAURENCE G HANSCOM FLD, BEDFORD, MA. ILS OR LOC RWY 29, AMDT 7… S-ILS 29 DA 470/HAT 347, VIS 1 ALL CATS. TEMPORARY CRANE 231 MSL 3079 FT E OF RWY 29. 1510231055-1605301055EST

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