Aircraft equipment loans and capital gains : hearings before a subcommittee of the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-fifth Congress, first session on H.R. 5822, a bill to amend Section 406 (b) of the Civil Aeronautics Act of 1938, with respect to the reinvestment by air carriers of the proceeds from the sale or other disposition of certain operating property and equipment and H.R. 7993, a bill to provide for government guaranty of private loans to certain air carriers for purchase of aircraft and equipment, and for other purposes, July 17 and 18, 1957.