Boeing 601 [SEP] service entry
Boeing 601
The Boeing 601 (sometimes referred to as the BSS-601, and previously as the HS-601) is a communications satellite bus designed in 1985 and introduced in 1987 by Hughes Space and Communications Company. It was designed for such applications as direct television broadcasting to small receiving antennas, very small aperture terminals for private business networks and mobile communications. The series was extremely popular in the 1990s, with more than 84 purchased by customers around the world. 
The more advanced 601HP derivative (for "high power") was
3
- Fokker F-28 3
Units Argentine Army.
 ( Argentine Army Aviation )
- 601 Army Aviation Battalion -
- Boeing CH-47C Chinook 2 (1)
- Agusta A109 3 (1)
- Bell UH-1H Iroquois 9
- Aérospatiale Puma SA330L 5 (5).
- South Georgia April 3 - Aérospatiale Puma SA330L 1 (1)
Units Argentine Coast Guard.
- Aviation Service -
- Aérospatiale Puma SA330L 1
- Short Skyvan 2 (2)
Units Argentine traffic planes.