According to the latest edition of the article, this type of self-propelled, medium-range surface-to-air missile system was allegedly declared obsolete by military forces of Russia in 2011. As stated in this article on "Wikipedia", "the current version of the page is not checked by experienced participants and may differ from the version screened 13 October 2015".
Recalling, Security Council of the Netherlands declares that "Boeing" over Donbas was shot down with Buk missile system. The appropriate conclusion was released in the report of the Security Council, presented October 13. Yesterday the U.S. National Security Council spokesperson Ned Price stated that Boeing 777 was shot down by a “surface-to-air missile fired from separatist – controlled territory in eastern Ukraine”.