On February 2nd, a US passenger plane collided with a military helicopter and crashed into a river on January 29th. On February 1st, the National Transportation Safety Board announced at a press conference that the data from the two black boxes of the aircraft had been successfully downloaded. The data shows that the height of the aircraft at the time of the impact was approximately 325 feet (99 meters). But when the time controller saw that the radar displayed the helicopter’s altitude as only 200 feet (about 61 meters). The committee pointed out that the heights of the two aircraft should have been consistent during the collision, but there are differences in the data currently obtained. The black box data of the helicopter has not been analyzed yet and further investigation is needed to confirm the collision altitude. The data also shows that the control tower had instructed the helicopter to pass from behind the passenger plane. The plane that was landing ten seconds later adjusted its descent angle, but a collision occurred about one second later. The committee also confirmed that night vision goggles were used in helicopter training, but it is currently uncertain whether night vision goggles were used at the time of the incident. (CCTV News)
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