While Bombardier was preparing to fly its Challenger 605 for the first time, Gulfstream Aerospace was engaged in obtaining certification from the former Soviet Union of its existing fleet of large-cabin business jets, including the G350, G450, G500 and G550. The Commonwealth of Independent States (CIS) issued its own certificates to Gulfstream, enabling the four models to be registered and operated within the 11 former Soviet Republics that constitute the CIS. The action came after the CIS's Aviation Register of the Interstate Aviation Committee first validated existing FAA type certificates, then issued its own.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/gulfstream-grabs-cis-certification-for-g550-g500-g450-g350