Elevate Holdings Inc., the parent company of Private Jet Services (PJS) and Elevate Jet, has acquired Keystone Aviation, a provider of aircraft charter, management and aviation maintenance services. The strategic combination, said an announcement,  unites two well-established aviation companies with extensive international client bases and long histories of serving the business aviation needs of corporate, government, individual and higher education clients. By bringing together both entities, said the announcement, Elevate Holdings will continue growing its managed fleet and become the 15th largest aircraft management business in the US. Greg Raiff, CEO of Elevate Holdings, said his company and Keystone Aviation “are both focused on delivering outstanding white-glove service and mission-critical solutions to our clients.” He said he believes the business aviation industry needs a provider large enough to deliver benefits at scale to its clients without sacrificing the personal touch so critical in a high-end service business. Together, he said, “the teams will continue delivering high-touch experiences with more business aviation options than ever before.” Aaron Fish, currently COO of  Keystone Aviation, will lead the new organization as president. Keystone Aviation employees will continue working alongside the Elevate Holdings team as the companies integrate, while TAC Air, the Keystone Aviation divesting company, will remain involved as a strategic partner.