APPROXIMATELY 85% of Costa Rica’s aerial fleet is older than 20 years. According to Tourism Minister Rodrigo Castro, this negatively affects tourism, the daily Al Día reported.In an effort to stimulate a more modern fleet of airplanes, the Legislative Assembly last month approved a bill that exonerates aerial taxi companies from paying import taxes on planes.Without the exemption, import taxes on a $1 million airplane, for example, would be $200,0000.Patriotic Bloc deputy Humberto Arce and the Libertarian Movement legislative faction criticized the bill as benefiting only a rich minority.