Amends the Federal Aviation Act of 1958 to provide for designated no smoking areas aboard aircraft holding certificates of public convenience and necessity.

Directs the Secretary of Transportation to adopt rules providing for the special segregation of cigar and pipe smokers. Declares that nothing in this Act shall be construed to require an air carrier to permit smoking aboard aircraft.

Prohibits smoking aboard an aircraft whenever such aircraft's ventilation system is not fully functioning.

Authorizes the Secretary to modify a carrier's rules concerning smoking on aircraft.