|Quoting Cubsrule (Reply 11):|
both engines appear to have been running and on fire at the time of impact
Wow, that puts a whole new perspective on things. A multiple engine fire would be an extremely rare event. If both engines were truly on fire, then the crew may have been distracted with that emergency and didn't keep a close eye on their speed. Result, Stall/Spin accident. Usually these are indicated by an aircraft wreckage being confined to a small area, rather than having a long debris field.
Horrible accident though. We'll have to wait until the final NTSB report comes out.