There are other possibilities that were not explored. The cargo door theory is a good possibility considering that there were other 747s that lost there noses or suffered damage in the same frame area.
AND
Former investigators 'break silence' about NTSB cover-up of TWA Flight 800 crash - A group of former NTSB investigators argue in an upcoming documentary that the crash, which occurred off the coast of Long Island in 1996 and killed 230 people, was not caused by a fuel tank explosion, as the agency said.
I'm done here.