RE:Question it is very likely that the fdr will be able to yield whatever info is needed. It seems that the airplane was intact by the placement of the large sections. The engines state can be seen if one can be located, and the compressor, or turbine blades can be inspected and any damage from ice ingestion. As well, the cockpit voice recorder will show what the pilots were talking about and their actions up to impact. As well, the positions of control surfaces can tell a tale too.