Since the early 1970s, language barriers have played a role in at least 10 major accidents, killing more than 1,500 people and contributing to dozens of close calls.
To prevent more calamity, pilots and air traffic controllers worldwide are being required by the International Civil Aviation Organization to speak English fluently by 2008.
Although English is the universal language of aviation, many foreign pilots and controllers know only key words and phrases, leaving them vulnerable during an emergency, says ICAO, a Montreal based-group that governs global air operations.
Go to the story for examples of major air-carrier accidents caused by miscommunication. (Via Taccuino di traduzione.)