sn't a Peruvian operator into Cuzco doing those great RNP AR IAPs (and DPs) with fairly late model B737s?
Yes, eventually.
In the beginning, the box simply would not accept a runway endpoint over 10,000 feet. No matter what we tried, PINS, waypoint on threshold, unless the waypoint is RWY terminator, and in the database as such, just no way. The lazy B had so many things hard and soft coded into the logic and systems with 10,000 so that pilots would not bust the check ride, it took a while to weed it out.
They did eventually fix this, but it took sometime, especially with Jepp as a competitor, so I think you know how that went.
This is why so many of the real challenging airports were AB first.
Cuzco, Lhasa, Linzhi, Queenstown, etc...