The Sterling Group (Sterling), an operationally-focused middle market private equity firm, has acquired West Star Aviation (West Star) from Norwest Equity Partners. West Star is a provider of maintenance, repair, and overhaul (MRO) services to the business aviation industry providing maintenance, modification, and other services to aviation customers. West Star provides services at four primary locations in East Alton, Illinois; Grand Junction, Colorado; Chattanooga, Tennessee; and Perryville, Missouri, as well as fifteen mobile repair bases and satellite MRO facilities. West Star also provides parts distribution and composite repair services through its Avant and DAS businesses respectively. Sterling previously partnered with