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Dean Bush, M.S. My recent background includes six years of teaching aviation English to air traffic controllers and airlinepilots to prepare them for the ICAO English language proficiency level 4, minimum operational level. |
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Dean Bush, M.S. My recent background includes six years of teaching aviation English to air traffic controllers and airlinepilots to prepare them for the ICAO English language proficiency level 4, minimum operational level. |
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