The Sterling Group, a private equity firm, completed the acquisition of West Star Aviation, a provider of maintenance, repair, and overhaul services, from Norwest Equity Partners, an investment firm. Financial terms were not disclosed. "We believe that our experience coupled with West Star's industry-leading customer service capabilities will make us a powerful combination. Jim Rankin has built a stellar leadership team, and we are eager to help accelerate their growth plans," Greg Elliott, The Sterling Group Partner.