Cosmonauts:
    Upload:
       Viktor V. Gorbatko [3], Commander
       Pham Tuan [1] (Vietnam)
    Download:
       Leonid I. Popov (Soyuz 35), Commander
       Valeri V. Ryumin (Soyuz 35), Flight Engineer
Backup:
    Valeri Bykovsky
    Bui Thanh Liem
Launch:
    Date: 23 July 1980
    Time: 18:33 UTC
Landing:
    Date: 11 October 1980
    Time: 09:50 UTC
Duration: 79 days, 15 hours, 17 minutes
Call Sign: Terek (upload); Dneiper (download)

This crew worked aboard the Salyut 6 space station. This mission marked the first Vietnamese in space.