RNP AR approaches
RNP AR non precision approach procedures are RNAV approach procedures where, to my understanding, RNP is below 0.3 NM and down to 0.1 NM, GPS is required and a special authorization is required for the operator (airline + crew + a/c tech status).
I understand that, for this kind of operation, besides the relevant RNAV approach authorization, a special authorization has to be issued by the State Authority in charge of the relevant airport.
I've checked the A320 FCOM and it states that operators are responsible for drawing contingency procedures for RNP AR NPAs.
Does any of you have any idea on when one can find an overwiew of these contingency procedures? I mean, just to have an idea on what are the actions required to perform a missed approach and to mantain the required obstacle clearence while experiencing navigation accurancy problem.
Thanks!