From the link in basseq's response to my question: "The investigations are meant to be litigation neutral in order to promote impartiality and foster cooperation so that the NTSB’s mission of finding the cause of an accident can be accomplished in order to prevent similar ones
from occurring."
Crucially, the National Transportation Safety Board's purpose is to make safety recommendations, not to enforce law.
Crucially, the National Transportation Safety Board's purpose is to make safety recommendations, not to enforce law.