Cessna 310 Songbird airplane model. Sky King was a 1940s and 1950s American radio and television adventure series featuring Arizona rancher and aircraft pilot Schuyler (or Skyler) "Sky" King. The series was likely based on a true-life person, Jack Cones, the Flying Constable of Twentynine Palms during the 1930's.
Although it had strong cowboy show elements, King always captured criminals and even spies and found lost hikers using his plane.
King's personal plane was called the Songbird. Though he changed from one plane to another over the course of the show, the later plane was not given a number (i.e., "Songbird II"), but was simply known as Songbird.
He and his niece, Penny (and sometimes Clipper, his nephew) lived on the Flying Crown Ranch, near the (fictitious) town of Grover City, Arizona. Penny and Clipper were also pilots, though still relatively inexperienced and looking to their uncle for guidance and mentoring. Penny was an accomplished air racer and rated multiengine pilot, who Sky trusted to fly the Songbird.