how about sky king with his daughter penny and son skylar?
She was his Niece
He didn't have kids of his own
http://en.wikipedia.org/wiki/Sky_kingKing and his niece, Penny (and sometimes Clipper, his nephew), live on the Flying Crown Ranch, near the (fictitious) town of Grover, Arizona. Penny and Clipper are also pilots, although they are inexperienced and look to their uncle for guidance. Penny is an accomplished air racer and rates as a multi-engine pilot, whom Sky trusts to fly the Songbird. In the third TV episode, Penny refers to Clipper as "my brother."