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MIL-C-25478B – Military Specification: Coolers, Lubricating Oil, Aircraft General Specification
April 11, 2018“The MIL-C-25478B specification is the general specification for aircraft engine lubricating oil coolers that provide oil temperature regulation for aircraft gas turbine engines using high temperature synthetic base lubricating oil, and aircraft piston engines, turbo propeller gear boxes, and helicopter...