Indeed MAS used to fly with the MD11 to EZE
, actually, this route was most probably opened with the MD11 and later upgraded to the 747-400.
About Varig flights, yes they had a few SA
crossings to Africa, besides J??bourg (flown until 1998/1999, more or less) also Abdijan and Monrovia come in mind without consulting. Some of the RG
routes were part of the former Panair do Brazil network. Varig also had this Indian Ocean crossing, as they flew GRU
and back, operated with the B747-400 and towards the end with MD11.
Speaking about Abidjan, MEA also flew GRU
-ABJ-BEY during the mid-90??s using first 747-200s and later A310-300s. After MEA dropped the service, we had for a short time Bellview doing Lagos-GIG
, with A300-600R.
About Falklands as ETOPS alternate for South Africa-South America flights, don??t think it is possible, as the islands are to much to the south and the ETOPS limit would have even greater than the 207 minutes used today in some routes across the Pacific.. Ascension Island could be an option, though.