If Brazil won't adhere to ICAO norms re impartial safety-oriented accident investigation, why isn't an international boycott by all aircrew a good response?
Simple solution but it never works in a free society.
Where do you draw the line?
Lots of countries besides Brazil have not adopted in full the recommendations of ICAO Annex 13. I take it that you are really paring down the concen only to the criminal part of the investigation and threat of punishment to the flight crew. Else we could add in any criminal investigation leading to punishment of any person including the countries own citizens.
Individual actions by a crew member to refuse to fly a route to such a country are sure to result in unwanted results. So how do you take this up several notches to include all international pilots?
The only way that I am aware, is IFALPA and they were already a non-voting party to the latest ICAO Annex 13 deliberations.