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M International Inc., has announced subsidiary Keystone Turbine Services, LLC (KTS) has received Rolls-Royce approval to modify the outer combustion case (OCC) p/n M250-10404 to the M250-10896 configuration.
“Keystone now has an approved repair procedure to address the potential of the M250-10404 OCC to unexpectedly crack in some locations,” said John Fraser, general manager of KTS. “Our repair eliminates the repetitive 25 hours inspection interval which was originally mandated to discover possible cracks which could lead to potential power and performance reductions.”
Currently, Commercial Engine Bulletin’s (CEB) A-72-2218 (C28), A-72-3303 (C30), A-72-6085 (C47B), A-72-5070 (C40B) and A-72-7002 (C47E) provides the instructions for operators to perform a repetitive visual and leak-tec inspection every 25 flight hours’ time period. By sending your OCC to Keystone for repair, you alleviate the requirement for future inspections as directed by those CEBs. Keystone is the second authorized maintenance, repair and overhaul center (AMROC) officially approved by Rolls-Royce for repair of this OCC.
With over 40 years’ experience, KTS is Rolls-Royce’s second largest AMROC for all M250 series engines, modules, accessories and components located in Coatesville, Pennsylvania. In addition, KTS is a Federal Aviation Administration and European Aviaiton Safety Agency certificated Part 145 Repair Station and a Honeywell authorized warranty and repair station (AWARS) for overhaul, repair and testing of Rolls-Royce M250, Honeywell LTS-101 and Pratt & Whitney PT6A and PT6T fuel controls, power turbine governors and related accessories.
KTS expanded its state-of-the-art 40,000-square-foot MRO facility with the addition of a second original equipment manufacturer (OEM)-correlated, all-digital engine test cell plus an increase of 10,000 square feet in new production floor space.