 Up until this time, the National Transportation Safety Board (NTSB) would review airline crashes with their "Go Team" for a short time performing analysis and interviews and then write their report; but while the team was gathering information about the accident, the management practices at the company were questioned.Subsequently, this was the first time that the NTSB took someone off of the team after the normal review period and had them stay behind and work full-time for the first human-performance investigation rather than just a human-factor investigation.According to the NTSB Aircraft Accident Report