Isabella if you are out of the country and the passport is expired there is no problem, since you are returning to the country of origin, when I went to the consulate in New York the consul gave me this information, to leave Brazil you need a valid because the minimum is 6 months before winning as required by most countries.
Please, at the Federal Police, Dept. Passport, the malls have these services, they can guide you with exactness ...
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