Fuerza Aerea Argentina F.28 Mk.1000C, TC-52 (c/n 11074) was reportedly retired in 2018 being stored at El Palomar (EPA) on 03Sep18 for preservation. This would have made it the next-to-last active F.28 with the Argentine Air Force, after TC-53 (c/n 11020), which was retired in 16Aug19 and was thought to have been the last F.28 to have been flown by any Argentine operator. However, TC-52 underwent another round of heavy maintenance, with its subsequent reactivation on 12Dec19 enabling it to keep flying which it is still doing to this day.
TC-52 was recently repainted in overall dark grey colors, which has not been worn by FAA F.28's previously, as pictured at the following link:
Its most recent flight, also detailed in the above link, was on 22Jan21 to Merlo (RLO) in the province of San Luis, to inaugurate a series of 2x/monthly flights to be operated to the airport from Buenos Aires Ezeiza (EZE) by Lineas Aereas del Estado (LADE) over the next few months.