The National Transportation Safety Board ( NTSB ) determined Deciding that the cause Causation of the accident was pilot error .

On May 1 , 2007 , the National Transportation Safety Board ( NTSB ) stated Statement that the probable cause of the crash Catastrophe was pilot error .

The NTSB was unable to determine Deciding which person was flying Motion the aircraft at the time of the crash Catastrophe .

The leader of the National Transportation Safety Board ( NTSB ) team investigating Criminal_investigation said Statement it was likely that the accident would have been prevented Preventing_or_letting had positive train control Control ( PTC ) been installed Placing .

In late 2014 , almost a year after the accident , the NTSB released Publishing its final Process_end report Reporting on the accident Catastrophe .

The NTSB report documented Recording possible check ride fraud among four other One-Two-GO pilots in the months following the crash .

As the ECAA lacked the resources of the much larger U.S. National Transportation Safety Board ( NTSB ) , the Egyptian government asked Request the NTSB to handle Hold the investigation Criminal_investigation .

As the ECAA lacked the resources of the much larger U.S. National Transportation Safety Board ( NTSB ) , the Egyptian government asked Request the NTSB to handle Hold the investigation Criminal_investigation .

Two weeks after the crash Catastrophe , the NTSB proposed Statement handing Giving the investigation Criminal_investigation over to the Federal Bureau of Investigation Criminal_investigation , as the evidence suggested Statement that a criminal Committing_crime act had taken place Process_start and that the crash Catastrophe was intentional rather than accidental Catastrophe .

This proposal Convincing was unacceptable to the Egyptian authorities , and hence the NTSB continued to lead the investigation Criminal_investigation .

The NTSB found Know that the probable cause Causation of the accident Catastrophe was the airplane 's departure Departing from normal cruise flight and subsequent impact Influence with the Atlantic Ocean as a result of the relief Cure first officer 's flight control Control inputs .

While the NTSB 's report Reporting stated Statement the impact Influence was `` a result of the relief Cure first officer 's flight control Control inputs '' , the report Reporting did not determine Deciding a specific reason Protest for the relief Cure first officer 's alleged actions .

After investigating Research the accident , the National Transportation Safety Board ( NTSB ) found Know it had been caused Causation by the track stretching Expansion to an excessive gauge at the point of derailment .

Later in the year , in a comprehensive safety review after another derailment Catastrophe of a passenger train nearby resulted in the first passenger fatalities in Metro-North 's history , the NTSB cited Adducing the maintenance shortfall as part of an inadequate `` safety culture '' at the railroad .

The resulting NTSB investigation determined Deciding that the snow removal operations were controlled Control from the tower .

The NTSB found Know the cause Causation of the accident to be the pilot 's poor decision to take off Departing in bad weather , and cited Adducing the weather itself as a contributing Giving factor .

Investigators with the Civil Aeronautics Authority , a predecessor organization of both the FAA and the NTSB , determined Deciding that both vertical fins and both rudders were missing from the twin-tailed aircraft .

The National Transportation Safety Board ( NTSB ) concluded Coming_to_believe that the flight crew were unaware of the amount of ice that had built Building up after the jet was delayed Change_event_time by heavy ground traffic taxiing to the runway .

The NTSB investigation revealed Reveal_secret evidence of pre-existing metal fatigue , and determined Deciding the probable cause Causation of the incident to be related to an error in the manufacturing Manufacturing process for joining Becoming_a_member fuselage crown skin panels .

The National Transportation Safety Board ( NTSB ) found Know that as the aircraft was beginning Process_start its takeoff rotation , engine number one ( the left engine ) separated Forming_relationships from the left Departing wing , flipping Self_motion over the top of the wing and landing Arriving on the runway .

According to the National Transportation Safety Board ( NTSB ) , which investigated Criminal_investigation the cause of the collision , the Metrolink train ran through Motion a red signal before entering Arriving a section of single track where the opposing freight train had been given Giving the right of way by the train dispatcher .

The NTSB faulted Judgment_communication the Metrolink train 's engineer , 46-year-old Robert M. Sanchez , for the collision , concluding that he was distracted by text messages he was sending Sending while on duty .

Accident investigators from the National Transportation Safety Board ( NTSB ) traveled Traveling to the scene , arriving Arriving the following morning amid speculation that a terrorist Terrorism attack was the cause Causation of the crash .

The four-year NTSB investigation concluded with the approval of the Aircraft Accident Report on August 23 , 2000 , ending Process_end the most extensive , complex , and costly air disaster investigation Criminal_investigation in U.S. history to that time .

The cause of the crash was independently investigated Criminal_investigation by two agencies in two countries : the United States National Transportation Safety Board ( NTSB ) and the Indonesian National Transportation Safety Committee ( NTSC ) .

The NTSB , which had jurisdiction based on Boeing 's manufacture of the aircraft in the United States , investigated Criminal_investigation the crash Catastrophe under lead investigator Greg Feith .

The National Transportation Safety Board ( NTSB ) investigation Scrutiny found Know that , while the bus driver was not aware that a portion of the bus was on the tracks as she should have been , the timing of signals was so insufficient that , even if she had identified Check the hazard as the train approached Arriving , she would have had to proceed Self_motion against a red traffic signal into the highway intersection to have moved Motion out of the train 's path .

Investigators with the United States Department of Commerce 's Civil Aeronautics Authority ( CAA ) , a predecessor organization to both the FAA and the NTSB , determined Deciding that an intense fire had developed Coming_to_be in the cockpit shortly after the aircraft had departed Departing the airport .