ECON cruise, LR cruise...
Join Date: Apr 2002
Location: MIRSI hold - give or take...
Age: 52
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Denti,
Your LNAV/Baro VNAV minima are not only higher than LPV minima due to temp.comp.
The entire lateral approach sector geometry is different, basically 4x RNP wide, whereas LPV is angular, like an ILS. Also, the use of Vertical Error Budget to calculate obstacle clearance will raise minima.
Funnily enough, most countries allow you to fly their LNAV/Baro VNAV approaches using SBAS in stead of barometrically derived GPs - if your avionic suite allows you to do this. Doesn't change the minima, though, and certainly doesn't turn it into an LPV-approach. Still, better than being able to move the GP 300ft down by setting a QNH 10hPa too low ;-)