Moderator: Asiana & Qantas Frequent Flyer
Join Date: Dec 2006
Location: STR/SYD/SMF
Programs: QF Lifetime SG, LH HON, OZ Lifetime Diamond +, HH Diamond, Marriott Lifetime Platinum
Posts: 14,367
Welcome to FT, busybear!
As your question is in regards to the usage of AA miles you should ask our moderator to move this thread to the AA forum. All the rules which you need are AA program specific and not oneworld specific.
By the way, I see plenty of award availability to Buenos Aires from NYC. Some business, but First almost every day. Search for BUE rather than EZE, this might help.