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TRL
- Usado para
- transition level
- Definição1
- The lowest flight level available for use above the transition altitude.
- Fonte1
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. ICAO abbreviations and codes: procedures for air navigation services. 7. ed. Montreal, 2007. (Doc. 8400)
- Português
- nível de transição