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- ICAO Level 4: Aviation English
- iOS App: Istruzione di: Get Exam
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- Punti: 1 + 0 Versione: 1.0 The operational level (ICAO Level 4) is required to be allowed to fly airplanes in international air traffic and to use the English language for R/T (radiotelephony) purposes. If you ... ⥯
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