- CNNA HL-3
__NOTOC__ Infobox Aircraft
name=HL-3 and HL-4
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type=Civil trainer aircraft
manufacturer=CNNA
designer=René Vandeale
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variants with their own articles=The CNNA HL-3 was a civil
trainer aircraft developed inBrazil in 1941.Development
CNNA had already benefited from the Brazilian government's decision to invest in a pilot training campaign and hoped that a dedicated trainer aircraft would attract even more sales. To that end, the HL-3 was proposed, and one prototype was constructed and flown. Unfortunately for the firm, this was not to be the case, and no official interest was shown.
The HL-3 was a two-place light aircraft powered by a 56 kW (75 hp) horizontally-opposed four-cylinder
piston engine .An improved version with a more powerful engine (97 kW or 130 hp) was designated the HL-4, but this didn't sell either.
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* [http://www.museutec.org.br/resgatememoria2002/old/enciclop/cap002/025.html São Paulo Technical Museum website]ee also
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