As I said this happened to a QF 737 that diverted to East Sale a few years back due to a low fuel state.
Do you want to actually put a date to that timeline. A "few years back" would be 2018.
And Pearce has an ILS, whatever that matters when RNP will get you in to any of these ports.
Do you mean RNP-AR or the rebadged RNAV-Z! Only RNP-AR would be of use if committing to a diversion because a lot of the RNAV-Z give you a minima not much better than a VOR approach. If you want to talk diversions "a few years back", remember the Virgin 737 that diverted from Adelaide because of fog and ended up landing in fog in Mildura off an RNAV-Z. He would have been better off declaring a Mayday and auto landing in Adelaide.
If you are going to write factually incorrect stuff then remember the saying about it better people thinking you are a fool........