NTSB Released today:
Read the Investigation Preliminary report.
Read the NTSB's urgent recommendation report on mitigating the risk of midair collisions at DCA.
Some highlights that popped out to me:
At 2047:40, the crew of flight 5342 received an automated traffic advisory from the airplane’s traffic alert and collision avoidance system (TCAS) system stating, “Traffic, Traffic.” At this time, the aircraft were about 0.95 nm apart, as shown in Figure 3.
At 2045:30, PAT25 passed over the Memorial Bridge. CVR data revealed that the IP told the pilot that they were at 300 ft and needed to descend. The pilot said that they would descend to 200 ft.
The PAT25 FDR indicated that the radio altitude of the helicopter at the time of the collision was 278 ft and had been steady for the previous 5 seconds.
At 2047:58, or 1 second before impact, flight 5342 began to increase its pitch. FDR data showed the airplane’s elevators were deflected near their maximum nose up travel.
And the airplane rolled about 450°, impacting the water in an approximate 45° nose- low attitude with a left roll about 90°.
PAT was at least 60 feet high...not sure if those helicopter routes are supposed to be AGL or MSL, but DCA is only 14 ft field elevation but either way they were high.
The CRJ must have seen the PAT too late and applied full deflection.
How terrible that must have been for the passengers and crew before impact.