Flight Safety,
The CVR and FDR in the 747 and 767 are located within the pressure vessel. They are at the back of the plane usually around the aft door or galley in the ceilling. They are not located back near the APU.
It also looks, from the pics available, that only the very aft section - such as the portion that houses the APU - hit the berm as there are tail feathers laying around but very little fusalage. It's not like it broke off at the pressure bulkhead area - which is what I first envisioned when it was mentioned that the tail 'snapped' or broke off.