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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?

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  • $\begingroup$ They are non-precision approaches with vertical guidance. So, they would be considered an APV approach. From what I recall about ICAO Annex 10, only ILS and MLS are classified as a precision approach. A PAR approach may also be considered a precision approach. $\endgroup$
    – wbeard52
    Jan 30 '20 at 3:49
  • $\begingroup$ So there is no official document mentioning the classification of RNP AR APCH, and what we can only classify is whether it's using vertical guidance or not? $\endgroup$
    – cwcauc
    Jan 30 '20 at 4:38
  • $\begingroup$ Yes, you are right. I found "RNP AR APCH operations are classified as approach procedures with vertical guidance (APVs) in accordance with Annex 6 — Operation of Aircraft. This type of operation requires a positive vertical navigation (VNAV) guidance system for the final approach segment (FAS). Current RNP AR APCH implementations utilize a barometric vertical navigation system (BARO-VNAV) meeting specified airworthiness requirements. " in DOC9905 1.2.3 at ICAO. link here:<icao.int/Meetings/PBN-Symposium/Documents/9905_cons_en.pdf> $\endgroup$
    – cwcauc
    Jan 30 '20 at 7:51

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