Full FAA Chronology at this link.
19300515: In regulations effective on this date, the Department of Commerce required airlines to obtain a certificate of authority to operate if they engaged in interstate passenger service. To qualify, an airline was required to demonstrate that it possessed aircraft that were properly equipped and maintained, a sufficient number of qualified airmen, and an adequate ground organization for the services provided. The routes served were required to possess such air navigation facilities as the Department deemed necessary for safe and reliable operations. Airlines were required to apply for the certificate by July 15, a deadline later extended to August 15, 1930.
19300515: Boeing Air Transport inaugurated the first airline stewardess service. The first stewardess was a registered nurse, Ellen E. Church, who has been described as the first female crew member aboard a commercial airliner.
19390515: The Aircraft Owners and Pilots Association (AOPA), an organization devoted to the interests of general aviation, was founded.
This Day in FAA History: May 15th
