Charlie Alfa,
PT-EFS was operated by Amazonaves Taxi Aereo, so RBHA 135
PT-OVC was operated by Reali Taxi Aereo, also RBHA 135 as we can see on the final report:
http://www.cenipa.aer.mil.br/cenipa/...c_04_11_07.pdf
it even says on page 20 that the pilots were required to take sim sessions during their initial training, which was never done...
i don't know much about the helicopter that crashed in Porto Seguro, but just the fact that there's a guy with no license flying an aircraft around means there's something wrong going on.
cheers