The US National Transportation Safety Board (NTSB), in coordination with the Naval Sea Systems Command Supervisor of Salvage and Diving (SUPSALV), is continuing to recover wreckage from the Bombardier CRJ700 that crashed into a military helicopter above the Potomac River on January 29.
The right wing, center fuselage, part of the left wing and left fuselage, significant portions of the forward cabin and cockpit, vertical and horizontal stabilizers, tail cone, rudder, elevators, TCAS computer and quick access recorder have now been recovered. The recovered wreckage will be moved to a secure location for a wreckage layout examination.
NTSB said it had also been provided updated information that shows the air traffic control tower display at DCA is fed by the Potomac TRACON.
The TRACON fuses information from multiple radar sensors and ADS-B data, providing the best quality flight track data to air traffic control, according to the NTSB
This data showed the Black Hawk was at 300 feet on the air traffic control display at the time of the collision. This data is rounded to the nearest 100 feet.
NTSB said it needed additional information to verify data points from the Black Hawk. In order to obtain this information, the Black Hawk needs to be recovered from the water, which is expected to take place later this week.