Costa Rica suspends airline amid probe of fatal plane crash

Costa Rica's civil aviation agency suspended local airline Nature Air Friday, 2 weeks after one of its small planes crashed near a tourist beach, killing 2 Costa Rican pilots and 10 US citizens. Ennio Cubillo, director of the civil aviation agency, informed Nature Air in a letter that it "preventatively" suspended all operations because several key employees were no longer with the company. "It doesn't directly have to do with the accident," said a civil aviation source. Nature Air's pilot training director died in the crash on New Year's Eve. Nature Air's operations manager quit this week and its aerial security director has requested a leave of absence. "Nature Air doesn't have, at the moment, a reliable and effective management structure to guarantee the execution of safe air operations," said the letter from Cubillo. <br/>