Investigators to the crash of Flight 93 searched diligently for the plane's "black boxes": the flight data recorder (FDR) and cockpit voice recorder (CVR). Flight 93's FDR was found on September 13, 2001, at 4:20 pm. It was uncovered in the impact crater, 15 feet underground.
The National Transportation Safety Board (NTSB) used data from Flight 93's FDR to determine the flight path, altitude, and control inputs from the cockpit. This information helped investigators to recreate the last flight of United Airlines Flight 93.
Below is the Flight Path Study, as assembled by the NTSB.
Last updated: December 16, 2021