Section 21409 Of Chapter 3. Regulation Of Aeronautics From California Public Utilities Code >> Division 9. >> Part 1. >> Chapter 3.

. It is unlawful for any person to engage in aeronautics as an airman in the State unless he has an appropriate effective airman certificate, permit, rating, or license issued by the United States authorizing him to engage in the particular class of aeronautics in which he is engaged, if the certificate, permit, rating, or license is required by the United States.