Huyler immediately began building time toward a commercial license and when it was formed in November 1929, she joined The Ninety-Nines, an international organization of women flyers, first led by pioneer woman flyer Amelia Earhart. The name of the group was chosen because 99 women were present for the first meeting, including Huyler. Between 1939 and 1941, she was the president of the 99s and led the fight against the Civil Aeronautics Authority (CAA) over the prohibition for women to fly during pregnancy. She later owned and flew a Grumman Widgeon amphibian.