Plane in DC crash tried to pull up just before impact, investigators say The National Transportation Safety Board said Saturday that data shows the plane tried to pitch up one second before impact.. Federal accident investigators on Saturday said the commercial plane involved in Wednesday’s deadly crash in Washington appears to have tried to pull up a second before it collided with a U.S. Army helicopter. “Sounds of impact were audible about one second later,” National Transportation Safety Board investigator Brice Banning told reporters at a news conference. Banning said the aircraft’s flight data recorder showed that the plane had started to increase its pitch. The independent agency also said it had been able to verify based on initial data that the impact occurred as the airplane was flying at roughly 325 feet when a Black Hawk helicopter slammed into it. The agency wouldn’t say what altitude the helicopter was flying at but the air route it was using should have limited it to no higher than 200 feet. Other preliminary data appear to indicate that air traffic controllers at Ronald Reagan Washington National Airport were operating with radar scope data showing that the helicopter was flying at an altitude of 200 feet at the time of impact, Banning said. That radar data has “less fidelity,” he said. “Our team is looking into that,” he said. When asked what would explain the apparent discrepancy between the two reported altitudes, NTSB board member Todd Inman said: “That’s what our job is — is to figure that out.” The data recorder from the Army helicopter has been retrieved, but investigators are in the process of removing some water that seeped into it, said Inman, who added the agency is “confident” they’ll be able to get data from it. Inman said the helicopter flight was approved to use night vision goggles but could not yet confirm whether the pilots were wearing them. The goggles could have limited their field of view.
空管的雷达显示屏数据应该是同时显示探测高度和飞机自己发的数据。 Air Traffic Control Radar Beacon System (ATCRBS)The ATCRBS, sometimes referred to as secondary surveillance radar, consists of three main components: Interrogator. Primary radar relies on a signal being transmitted from the radar antenna site and for this signal to be reflected or “bounced back” from an object (such as an aircraft). This reflected signal is then displayed as a “target” on the controller''''''''s radarscope. In the ATCRBS, the Interrogator, a ground based radar beacon transmitter-receiver, scans in synchronism with the primary radar and transmits discrete radio signals which repetitiously request all transponders, on the mode being used, to reply. The replies received are then mixed with the primary returns and both are displayed on the same radarscope. https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap4_section_5.html#:~:text=The%20equipment%20is%20also%20designed,the%20effectiveness%20of%20radar%20systems.
we are missing the big picture. even if the chopper is at 200 feet the difference is only 100 feet btw the two. Thats a bad design to start with, an accident waiting to happen and it did.
we are missing the big picture. even if the chopper is at 200 feet the difference is only 100 feet btw the two. Thats a bad design to start with, an accident waiting to happen and it did. gocaigo8421 发表于 2025-02-02 05:50
相撞前的30秒内，直升机和AA客机基本上相向而行，直升机不可能看不到AA客机的头灯。 而出现在画面里的第3架飞机，无论位置和方位都不可能对直升机形成干扰。
Federal accident investigators on Saturday said the commercial plane involved in Wednesday’s deadly crash in Washington appears to have tried to pull up a second before it collided with a U.S. Army helicopter. “Sounds of impact were audible about one second later,” National Transportation Safety Board investigator Brice Banning told reporters at a news conference. Banning said the aircraft’s flight data recorder showed that the plane had started to increase its pitch.
The independent agency also said it had been able to verify based on initial data that the impact occurred as the airplane was flying at roughly 325 feet when a Black Hawk helicopter slammed into it.
The agency wouldn’t say what altitude the helicopter was flying at but the air route it was using should have limited it to no higher than 200 feet.
Other preliminary data appear to indicate that air traffic controllers at Ronald Reagan Washington National Airport were operating with radar scope data showing that the helicopter was flying at an altitude of 200 feet at the time of impact, Banning said. That radar data has “less fidelity,” he said.
“Our team is looking into that,” he said. When asked what would explain the apparent discrepancy between the two reported altitudes, NTSB board member Todd Inman said: “That’s what our job is — is to figure that out.” The data recorder from the Army helicopter has been retrieved, but investigators are in the process of removing some water that seeped into it, said Inman, who added the agency is “confident” they’ll be able to get data from it. Inman said the helicopter flight was approved to use night vision goggles but could not yet confirm whether the pilots were wearing them. The goggles could have limited their field of view.
撞击前一秒开始拉升，这个说的是AA客机。问题都在直升机，直升机没有做出任何反应，直直的撞上去，有人说第3架飞机干扰，根本不存在干扰。
直升飞机 处于 违规高度，
就这一点就够了，
为什么处于违规高度？ 三个飞行员都没有发现？
塔台是否有发现，有没有检测 直升机 高度的机制，
都是问题
脑洞一下，会不会恐袭，恐怖分子把飞机控制设备弄失灵了？
紧急时刻运输华府高官？ 这些大佬以后没人愿意坐这种飞机吧。看看这女飞行员的资历，还是当白宫社交秘书合适，飞行任务交给她害人啊。
油管上100个人里99个都这么问。 这件事太明显太不可思议，感觉哪里整盅了。
这个真的很诡异，会不会直升机收到什么命令要立即升高？
刚刚在cnn网站上看到报道说对于直升机的高度不同渠道数据有出入：大众看的平台上显示350，但塔台显示的是200，至于为什么出现不一致现在还在调查
会不会有骇客侵入了？
是客机发到tracking平台的信息显示高度300+，推断相撞时直升机也在300+，但空管那儿看直升机是200（不知道指的是雷达探测高度还是飞机自己报的）。tracking平台收到的直升机高度信息显示撞击前几秒黑鹰已经从300降到200。
空管的雷达显示屏数据应该是同时显示探测高度和飞机自己发的数据。
Air Traffic Control Radar Beacon System (ATCRBS)The ATCRBS, sometimes referred to as secondary surveillance radar, consists of three main components: Interrogator. Primary radar relies on a signal being transmitted from the radar antenna site and for this signal to be reflected or “bounced back” from an object (such as an aircraft). This reflected signal is then displayed as a “target” on the controller''''''''s radarscope. In the ATCRBS, the Interrogator, a ground based radar beacon transmitter-receiver, scans in synchronism with the primary radar and transmits discrete radio signals which repetitiously request all transponders, on the mode being used, to reply. The replies received are then mixed with the primary returns and both are displayed on the same radarscope. https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap4_section_5.html#:~:text=The%20equipment%20is%20also%20designed,the%20effectiveness%20of%20radar%20systems.
调查清楚事故直接原因是必要的。这样才能正确评估所需容错率。