UPDATED 10Feb18: Aerolineas Argentinas 737 MAX 8, LV-HKU (c/n 44293/6753), taxis at Buenos Aires Aeroparque (AEP) on 08Feb18. (Phil Perry Photo)
Aerolineas Argentinas' third 737 MAX 8, LV-HKU (c/n 44293/6753), arrived at Buenos Aires Ezeiza (EZE) on the afternoon of 26Jan18 after its delivery flight from Seattle's Boeing Field (BFI) via Punta Cana (PUJ). The aircraft is scheduled to enter commercial service on 05Feb18 on a flight to the Patagonian city of Neuquen (NQN), which has apparently been receiving many 737 MAX 8 flights lately.
Source:
https://aerospotter.blogspot.com.ar/2018/01/max-iii.html