After the US, the second country to operate UH-1S in Antarctica was Argentina, whose air force UH-1HS began operations during the summer of 1968 to support Matienzo base, which was in a critical situation because bad weather had made its re-supply impossible for two years. Two helicopters were deployed on the ARA San Martin icebreaker and carried supplies to the base. In 1972 the air force Hueys were joined by Army Aviation UH-1HS. On December 22, 1974, air force helicopter H-10 was lost during a heavy storm when the helicopter fell overboard from the ARA San Martin while sailing close to South Shetland Islands. Later, on December 6, 1976, H-16 was lost with its crew when carrying a load of underslung supplies to the Vicecomodoro Marambio base in whiteout conditions.the cargo sling hit a cliff close to the base. From 1978, the air force helicopters were replaced by the twin engined Bell 212 which is still in use today, while the army UH-1HS were also joined by two Bell 212s in 1976. From 1980 they were replaced in Antarctic operations by the new SA-330L Puma. Another air force to operate in Antarctica was Chile, which started operations in the late Seventies with UH-1H H-81 and H-89. The operations in Antarctica were performed for a number of years with UH-1HS until they were replaced by the MBB Bo-105 and later by a single S-70A Blackhawk.
An Argentine Air Force UH-1H on board the ARA General San Martín icebreaker during one of the first Antarctic operations of the type. A Chilean Air Force UH-1H operating in Antarctica.the helicopter wore a special paint scheme tested on this aircraft. A Chilean Air Force UH-1H and the sole Bell 212 operated by the force, photographed in Antarctica in the early 1980s.