Balinda,
To answer your original question as to the groundings, I believe it was all Brasilia's and was due to a breakdown in communications between the manufacturer, CASA and the operators where some operational documents were not sent/received in a timely manner by all parties. This was cleared up and they were all back in the air within 24 hours.
The some of the other problems mentioned here are all still to be sorted out and fur may still yet fly!!
BSB