Who did the ‘investigation’ of the NTSB? The OIG? DoJ? or the bloggers you are quoting.
In other words, is this real or BS? Because one can’t tell from your posts.
Obama's DOT OIG stated, in relevant part, "[W]e only have oversight of DOT-related events so anything related to DHS, US Navy, NTSB, Hawaii State officials or offices is outside our scope."
This is not BS, as a thorough review of the materials will show. The results have been quite favorably mentioned by several Senior FAA Investigators and a retired NTSB Investigator in Charge.
For clarification, the authors’ results are not of an investigation of the NTSB, as your post might seem to suggest took place.
The authors’ investigation was of the Grand Caravan crash off Moloka’i 12/11/13, which the NTSB also investigated.