A bill to make certain technical corrections to the Trade Agreements Act of 1979.

Amends the Trade Agreements Act of 1979 to make technical corrections in the tariff treatment of watches. Stipulates that the ad valorem duties imposed on iron and steel products are in addition to specified rates of duty. Increases the ad valorem rate of duty on specified forms of spiegeleisen. Exempts flight simulating machines, balloons, gliders, and airplanes from the duty-free treatment proclaimed for articles certified for use in civil aircraft.