Companhia Nacional de Navegação Aérea ("National Aerial Navigation Company", usually known as CNNA) was a Brazilian aircraft manufacturer of the 1940s established by Henrique Lage. It produced Muniz designs under licence, as well as prototypes for a wide range of civil aircraft. Its greatest successes were the HL-1

CNNA HL-1

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 and HL-6

CNNA HL-6

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, which were purchased in number by the Brazilian government for the country's aeroclubs as part of a pilot training initiative. Business ceased in 1951.