Siglas Inglês
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- Usado para
- air navigation services
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Universal safety oversight audit programme continuous monitoring manual. 3. ed. Montreal, 2011. (Doc 9735-AN/960)
- Fonte2
- INTERNATIONAL AIR TRANSPORT ASSOCIATION. IATA environmental review 2004. Montreal, 2004.
- Português
- serviços de navegação aérea (SNA)