In the case of the TAM 3054, it seems that A/THR thrust assignment to the right engine wasn't limited by the right TLA reading.
Also the technical guy from National Agency for Civil Aviation (ANAC) said that it was decided internally that planes to land in Congonhas had to have both reversers and that this direction was published in their site. He believed that this was to be followed but for some reason another director of ANAC said that this was not so and TAM said that they followed the Airbus directives, not ANAC. What a mess...
Marcio,
Does it have an identifier (portaria, resolucao, etc) and number ?