Supplemental Air Carrier Certificates : hearings before the United States House Committee on Interstate and Foreign Commerce, Subcommittee on Transportation and Aeronautics, Eighty-Sixth Congress, second session, on May 23, 24, 1960.

Considers H.R. 7593, to amend Federal Aviation Act of 1958 to authorize CAB to issue supplemental certificates of public convenience and necessity, enabling commercial air carriers to transport passengers and freight according to limitations on type and extent of service set forth in certificates.