Air traffic controllers' nighttime sit-uational awareness, takeoff clear-ance terminology and risks of misunderstanding bilingual radio transmissions are being investigated by French civil aviation authorities. The need to scrutinize such key flight safety topics results from a runway incursion incident last year at Paris Charles de Gaulle airport. The BEA French accident investigation bureau, which recently completed its report, determined that air traffic control (ATC) confusion played a critical role in the incident.
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