[3] Born in Gurvanbulag, Bulgan, Gürragchaa studied in Ulaanbaatar to become an aerospace engineer.

He was selected as part of the eighth Intercosmos program on 1 March 1978, at time he was in the rank of Major General.

Gürragchaa, along with Soviet cosmonaut Vladimir Dzhanibekov, departed from Baikonur Cosmodrome on 22 March 1981.

After 124 orbits and 7 days, 20 hours and 42 minutes in space, Gürragchaa and Dzhanibekov landed 170 km southeast of Dzhezkasgan.

The Zaisan Memorial, a monument south of Ulaanbaatar dedicated to Russian–Mongolian friendship, includes a mural which depicts amongst its scenes Gürragchaa's 1981 flight.