Brazil hopes its plan, announced on Wednesday, to allow government-controlled Banco do Brasil and Caixa Economica Federal to purchase shares in private financial institutions will eventually succeed in shoring up the market.

BBC: Turmoil in Latin American markets

Experts such as Mr Bernasconi and the Instituto de Pesquisa Economica Aplicada (IPEA), a Brazilian research group, have long doubted Brazil's ability to make the necessary improvements to airport capacity in time.

BBC: Is Brazil ready to host the 2014 World Cup?

Last year, the government abruptly changed its lending rules for auto loans and private banks had to comply or lose business to the big state banks, mainly Banco do Brasil and Caixa Economica Federal.

FORBES: Brazil Facing Its Own 'Sub-Prime' Lending Problem