Sikorsky UH-19D 55-3227 United States ArmyThese are 1 72 scale decals for the Sikorsky UH 19D Chickasaw, serial 55 3227, assigned to the 126th Medical Company, California Army National Guard a dedicated medevac helicopter serving in one of the Guard's frontline medical evacuation units during the late 1950s and early 1960s. The UH 19D Chickasaw was the U. S. Army's utility transport variant of the Sikorsky S 55, powered by a nose mounted Wright R 1300 radial engine that freed the fuselage for