Says petition failed to prove original findings were wrong, won't reopen probe
                                
                                
                                    (Newser) -
                                    Last year, a group of former US investigators including former NTSB investigator Henry Hughes  petitioned the NTSB to re-open the investigation  into the 1996 crash of TWA Flight 800, but the agency yesterday  announced  it had "denied the petition in its entirety." The petitioners argued that the crash...