The Brazilian DAC appears to be a competent body, and their Accident Investigation Commissions are presided over by a top-ranking AF Officer .. and the countrys aviation process appears to be largely tied in with Defence and the Brazilian AF ..
Note, that the Commissions job is purely to ascertain accident causes, and not apportion blame .. that process is handed over to Brazilian Police, if criminal activity is found .. or Administrative sanctions are applied under the Brazilian Aviation Code, (CBAer) if infractions of the BAC are found ..
They release three levels of reporting, in line with global standards ..
1. The Preliminary Report, which only summarises the initial data collected .. and which outlines the factors and lines of enquiry that the main report is to follow ..
2. The Aviation Accident Investigation Report, contains more detailed information, analyses and conclusions, that lead to Flight Safety Recommendations ..
3. The Final Report is THE definitive document, covering every single factor, causes, results, and recommendations resulting from the AA.
The Preliminary Report appears likely to appear in the next week or 10 days .. the AAIR will likely be 6-12 months down the track, and the Final Report could be up to 2 years away ..
http://www.dac.gov.br/segurancaing/seguranca1.asp