Iberia/Aviaco visits long predate to 80s !
Go right back to the late 60s, With props DC7 and Constellations through Caravelle, DC-8, DC-9, DC-8 ( super) for Aviaco on inclusive tour ( charters)
The comment about Aviaco was about Iberia a/c operating for them, not about Aviaco operating (I thought the same - go way back before the 80's)