"Why do you consider an ILS with a DA of 652 and vis of 3.0 km, a visual approach? Won't that ILS (Rwy 35) support an autoland albeit with those minimums?
I presume your company isn't qualified to do the two RNP AR IAPs:
Runway 17 508 and 2.6 km.
Runway 35 542 and 3.0 km."
Yes I couldn't understand either the "only visual" approaches into Quito when apparently there are published approaches there.
I can only assume the high DA for the ILS on 35 is due because of obstacles.
Although you could possibly use the aircraft's auto land feature there I don't think it would be a wise procedure to do so. CAT II and III airports require special features to be certified to those minimums which include protected zones to avoid false signals to be received by the aircraft's onboard equipment especially during an auto land.