Aeroposta was a short-lived Argentinian airline who operated this 1970-vintage 747 for only around six months. This airframe was later converted to a freighter, ended its active days with Polar Air Cargo as N852FT, and became the fire service trainer at Prestwick for 15 years, finally being scrapped in late 2017.

Delivered to United as N4712U in 1970. To Pan Am in 1985. Fitted with side cargo door in 1988. I think it can just be seen on the rear fuselage. To Aeroposta in 1992 . Converted to a freighter for Polar Air Cargo in 1994. Reregistered as N852FT in 1995. Used as a ground trainer at Prestwick from 2002. Scrapped in 2017. Parts to Sunderland for preservation.

Later became N852FT with Polar Air Cargo.