Complex sentence: The Hahn Air (airline) operations went through IOSA certification for the first time in 2007, and entered the Japanese and Korean markets by connecting to the Axess, Infini and Topas reservation systems.
Split into simpler sentences: The Hahn Air flight operations went through IOSA certification for the first time in 2007. The same year, Hahn Air entered the Japanese and Korean markets by connecting to the Axess, Infini and Topas reservation systems.