Jet Maintenance International is marking three years of operations with an expansion into powerplant MRO support, having recently secured Authorized Service Center status from Williams International for its engines on Cessna Citation Series aircraft.In January, Jet Maintenance engineers completed training on the FJ44 series engine in Michigan, and the company recently invested $120,000 for tooling and inventory at its home base at the London Oxford Airport.With the Authorized Service Center status, Jet Maintenance will now be able to offer engine support at Oxford and London Biggin Hill Airport, where it currently offers line maintenance support on Cessna light jets. Line maintenance currently includes periodic inspections, unscheduled engine repairs, and engine removal and installation.The company's Maintenance Manager James Coughlan will lead the engine maintenance team in Hangar 14, a 160,000 square foot facility at London Oxford.The move comes after Jet Maintenance secured U.S. FAA Repair Station approval in September last year, enabling it to support owned N-registered Citation Jets."This is a significant endorsement for our dedicated team after three years of business," said Ed Griffith, Director of Jet Maintenance International. "Now we can offer our European Cessna Citation customers a one-stop -- with aircraft and engine MRO -- and Tamarack active winglets installations, too."Jet Maintenance can provide winglet installations in 10 days on CJ2, M2, CJ2, and CJ3 aircraft, plus maintenance and service as Tamarack's European Installation Service Center.