Preservation of International Air Service Act of 1985

Preservation of International Air Service Act of 1985 - Prohibits controlling stockholders of any major United States airline (and persons associated with controlling stockholders) from exercising any voting rights of such stock during a period of 90 days beginning on the date of enactment of this Act. Requires such persons to place all their stock in a trust for the remainder of such period, under trust terms that insure they do not exercise any control over the voting of such stock.

Directs the Department of Transportation to determine whether all controlling stockholders of major United States international airlines are willing and able to continue the transportation authorized by certificates of public convenience and necessity. Requires the Department to render a final decision on the matter within 90 days of the date of enactment of this Act.

Confers jurisdiction upon Federal district courts to enforce compliance with this Act.