GPS/WAAS VNAV approaches and runway length

On Fri, 22 Oct 2004 21:13:18 -0500, J Haggerty
wrote:

LPV's are actually built to a TCH. If the airport has an ILS installed,
they'll aim for the same TCH. If they don't have ILS, they'll select a
TCH based on the wheel height group, which is based on the type of
aircraft expected at the runway. Wheel height groups can be found at the
following link, on page 19 of 70. The smaller the aircraft, the lower
the TCH requirement, which would make the touchdown point closer to the
threshold.
http://av-info.faa.gov/terps/Directi...es/8260.50.pdf

The tables in AC 150-5300-13 (pages 48/49 of 57) at
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/f3e8f0f55c4ebcf986256e290071fd07/$FILE/AC150-5300-13chg6.pdf
give an idea of runway lengths required. 3058' doesn't meet the criteria
for LPV, so to answer your question, no LPV (unless criteria changes).

Great references, thanks. I agree with your assessment - I don't
think 3ck can expect to benefit from one of these approaches anytime
soon. Too bad, as I would have liked the improved minimums... Not
that I would have used them much, but the piece of mind of having an
extra few hundred feet vs an alternate is nice.

-Nathan