Libertador General José de San Martín Airport PSS / SARP

Argentina's principal state-owned ramp/ground handler; opened a dedicated ramp-handling station ("escala") at Posadas in August 2021 (inaugurated alongside Corrientes, attended by Intercargo's president and the Misiones governor) to support scheduled carriers at PSS. Intercargo's standard national package covers aircraft towing/pushback, passenger boarding and deplaning, and baggage handling.

YPF operates a dedicated aviation-fuel installation ("Aeroplanta YPF Posadas", ICAO SARP/IATA PSS) on airport grounds at Libertador General José de San Martín Airport, supplying Jet A-1 for turbine aircraft and Avgas for piston aircraft; exact posted hours not published, YPF also visible in airport fuel-dispenser photography (Wikimedia Commons "Surtidores de combustible en Aeropuerto Posadas" file, captioned "Aeroplanta de YPF en plataforma comercial del Aeropuerto Libertador Gral San Martin").

Aerolíneas Argentinas is the dominant carrier at PSS (documented as ~93% of the airport's passenger traffic routed to Buenos Aires, plus Córdoba service; B737/E190AR equipment); standard practice for the flag carrier's domestic mainline network is to keep line-qualified technical/AOG support at each scheduled station in-house, but no Posadas-specific documentation of a local maintenance base was located, so this is recorded as unconfirmed self-handling rather than a third-party MRO.

Aircraft interior/cabin cleaning is part of Intercargo's standard nationwide ramp-service package ("limpieza de aeronaves"); not separately confirmed as active at the Posadas station specifically.

As the local ramp handler, Intercargo owns/operates its own ground support equipment (tugs, GPUs, belt loaders) to run turnarounds at its Posadas station; no independent third-party GSE lessor was found at PSS.

Airport cargo mix is documented (yerba mate, coffee, tea and spices ~34%, paper/cardboard ~32%, agricultural manufactures ~27%, per the airport's own socioeconomic data), moving as ramp/belly cargo through the same ground-handling operation; no separate cargo-terminal operator is documented at PSS, so this is attributed to the ramp handler on an unconfirmed basis.

PSA is Argentina's federal airport-security police force with jurisdiction over the whole Sistema Nacional de Aeropuertos; PSA personnel are directly confirmed on-site at Posadas International Airport in local press (Primera Edición Misiones, "La PSA impidió el trabajo de PRIMERA EDICIÓN", Dec. 2022, describing PSA staff operating at the Posadas international airport), covering security screening, guarding and law-enforcement duties.

Provides taxi and remise (car-with-driver) ground transport service at Posadas airport, alongside the Línea 28 public bus; listed as the airport's taxi/remise provider in the airport's own profile (matches the operator name given in the airport's Wikipedia infobox/services section).

State air-navigation service provider operating the Posadas control tower and radar; EANA's own site documents a control-tower modernization (new consoles, lighting, operational building) at PSS, and its own news page ("Se actualizó el radar de Posadas y fortalece la gestión del tránsito aéreo en el noreste argentino", published January 14, 2026, part of the national Programa de Actualización del Sistema Radar) confirms a completed Posadas radar modernization with Mode-S/ADS-B technology — covering ATC, met and flight-planning support for the field.