Premise: Phoebe Jane Fairgrave Omlie (November 21, 1902 – July 17, 1975) was an American aviation pioneer, particularly noted for her accomplishments as an early female aviator. Omlie was the first woman to receive an airplane mechanic's license, the first licensed female transport pilot, and the first woman to be appointed to a federal position in the aviation field.
Hypothesis: Phoebe Omlie maintained and repaired her own transport plane.