Originally Posted by
underfire
Technically, these are saying the same thing....
and yes, when a temperature correction is required, the pilot is responsible, but it must be cleared with ATC or you dont use the procedure.
It is discussed in detail at the link Capt S provided.
Technically they are not the same thing. APV has a geometrical descent path, whereas an RNP approach to LNAV/VNAV minima has a path based on barometric data. Therefore, the APV is in the regard to low temp correction more akin to other geometric approaches, like ILS and GLS approaches. The LNAV/VNAV one however is not, its approach path will change with temperature, it is just designed to be safe within the published temperature limit without adjusting the DA, whereas on a geometric path correction is absolutely necessary.