I know that the posts of Greg and me are getting off-topic from this thread but I will leave it to Dean (as Administrator) to do any migration of them seen appropriate.
I only paid attention to RNP (and read a bit about it) when I bought Dazzle Colour Game's Nyingchi Mainling (Linzhi) airport a few weeks ago. That airport is in Tibet at a height of 2949m and is accessible on only about 100 days a year, but only in daylight. It is in the Yarlung Tsangpo River valley and is regarded as one of the most difficult airports in the world to reach. The approach route is 95 miles long between 4000m high mountains usually covered in cloud and fog and where there are sometimes only 4km narrow separations between ridges. The airport uses a RNP approach procedure for instrument approach guidance through the valleys.The first flight into there using RNP was in an Air China B757 without passengers on 12 July 2006 (a video of that flight is available on YouTube at https://www.youtube....h?v=PdSMk01l2wQ ). Flights with passengers started six weeks later (the video of that first passenger flight is on YouTube at https://www.youtube....h?v=ZqgvAmf0grE ).
Another airport where RNP is used is Cuzco (Cusco) in Peru which is available as an Aerosoft or LatinVFR airport. I have the Aerosoft one from PCA Aust. Another which I have is Juneau in Alaska which is available as an Orbx/FTX airport.
I have never tried using RNP even though I have the PMDG 737NGX and the blurb for that aircraft on the PCA Aust website says:
"FMC/AFDS - An all new flight management computer (FMC) and autopilot simulation that contains numerous features never before seen in an MSFS addon including Required Navigation Performance (RNP), LNAV leg bypasses, extremely accurate VNAV speed and altitude predictions, Integrated Approach Navigation (IAN) and the full complement of scratchpad warning messages that a real crew could see."
I wonder whether anyone on this Forum has tried RNP on these or any other airports? What other flight sim aircraft have RNP capability?