KRIL RNP based minima could safely still be even lower
The KRIL RNP based approach minima at RNP .1 could still safely be even lower, if the present obsolete and unnecessary limitations were removed that are still being placed on RNP procedure design. The fully allocated real VEB could easily provide for DA(H) down to and even somewhat below 200' HAT compared to the higher DA(H) shown for the RNAV(RNP) Z Rwy 8. The present 250' HAT floor limit was only put there for largely political reasons, not due to any technical limitation of engineering or physics. That potential additional advantage for RNP is particularly valid considering that any aircraft with RA available could also use an RA floor to additionally bound improbable to extremely improbable VNAV non-normal events. Unlike with TERPS or PANS-Ops, with [real] RNP, particular non-normal as well as rare-normal events are already suitably addressed and accommodated.