The Fairchild Aircraft C-26 "Metroliner" is the designation for the Fairchild Swearingen Metroliner series twin turboprop aircraft in the service of the United States military. It was not officially named by the US Armed Forces, but is unofficially known by the same name as its civilian counterpart. The C-26A is the military version of the Model SA227-AC Metro III; the C-26B is the military version of the Model SA227-BC Metro III and Model SA227-DC Metro 23; and UC-26C is the military designation for the Model SA227-AT Merlin IVC.