Embraer does not perceive any serious threat from new regional aircraft in Asia and Russia, but has expressed concern over government funding for their development.
Commercial aviation president Paulo Cesar said the Sukhoi Superjet, which has just entered service, and the aircraft under development in China made the market "more challenging".
"One thing that concerns us is the level of government support being provided to the new manufacturers," he said, adding that Embraer wanted to see a "level playing field".
But he pointed out that the airframers would "take a while to be a global player". Cesar said: "Aircraft must be reliable - it takes time for that."