How to define RNP AR APCH as a
Non-Precision Approach / Approach with Vertical Guidance / Precision Approach?
or it varies when complying with different standards just like RNP APCH?
or it's only a special navigation method?
A document published by Airbus Safety First says:
RNP and RNP AR procedures allow crews to fly approaches using internal and very accurate navigation tools, instead of traditionally using external guidance aids. They also allow the replacement of visual and circling approaches by instrument approaches, thereby enhancing the safety of airline operations. They are non-precision approaches although they provide the crews with cues and procedures similar to those used on precision approaches.
Click here, the 2nd paragraph in Introduction Part https://safetyfirst.airbus.com/app/themes/mh_newsdesk/documents/archives/performance-based-navigation-rnp-and-rnp-ar-approaches.pdf
How can it define RNP as only a NPA?