- Joined
- Nov 29, 2016
- Messages
- 5,674
- Points
- 63
http://www.sohu.com/a/304627642_161795?spm=smpc.home.top-news3.1.1553879262772XbSRwXp
南方都市报
9.9万文章 0总阅读
查看TA的文章>
104
- 分享到
埃航坠机前防失速系统自动启动！业界称初步认定原因与狮航一致
2019-03-29 15:49
埃航致157死空难调查初步结果出炉：飞行员曾启动预防失速系统
埃航坠机事发第20天，3月29日，据美国媒体报道，事故调查的官员初步达成共识，ET302朝地俯冲坠毁前，机上的防失速系统（MCAS）曾被自动启动。
上述结论在本周四美国联邦航空局的一次高层会议中被披露，知情人士称调查人员已就此达成共识。这一初步结论也证实了业界此前的猜测。根据该结论，民航专家林智杰告诉南都记者，初步可认定埃航与狮航事故原因具有一致性。
坠机现场。
3月10日，埃塞航空一架ET302航班在起飞6分钟后坠毁，涉事机型为波音737MAX8。事发后，根据飞行数据，业界分析怀疑ET302出现MCAS系统失灵，起飞不久后机头朝地俯冲。
据悉，MCAS系统原本是波音公司开发的自动安全软件，初衷是阻止737MAX客机失速。但在异常情况下，该系统可能自动启动，使机头降低，从而导致机头俯冲坠机。
据南都此前报道，在印尼狮航事故导致189人丧生后，调查人员曾表示，由于错误的传感器数据启动了MCAS系统，飞行员在失去控制权之前，一直试图与飞机的控制系统作斗争，期间反复“斗争”了二十多次。
埃航事发后，埃塞俄比亚政府的交通机长曾公开表示，根据“黑匣子”数据，埃航事故与印尼狮航事故有“明显相似之处”。
就在3月28日3时，波音公司宣称完成737MAX机型软件系统的更新，涉及MCAS系统、其它软件以及机组程序变化。波音称，本次更新后，如果传感器与襟冀收缩不一致，MCAS将不会被激活，将改由驾驶舱的显示器指示器向飞行员发出警报。此外，万一MCAS在特殊情况下被激活，机组人员可以通过拉杆抵消。美国联邦航空局随后表态，本次波音的防失速软件的更新尚未正式获批。
对于上述初步调查结论，波音公司目前回应称，两起事故的原因都还没有最终结论。
采写：南都记者 黄驰波
Southern Metropolis Daily
99,000 articles
0 total reading
View TA's article >
104
share to
The anti-stall system in front of the Essen crash automatically starts! The industry said that the initial reason was consistent with Lion Air
2019-03-29 15:49
The preliminary results of the 157 air crash investigation conducted by Egypt Airlines: the pilot has started the prevention of stall system
On the 20th day of the crash, the flight accident officials reached a consensus that the on-board anti-stall system (MCAS) was automatically activated before the ET302 crashed into the ground.
The above conclusions were disclosed in a high-level meeting of the US Federal Aviation Administration on Thursday, and people familiar with the matter said the investigators had reached a consensus on this. This preliminary conclusion also confirmed the industry's previous speculation. According to the conclusion, Lin Zhijie, a civil aviation expert, told the Southern Reporter that the cause of the accident between Egypt Airlines and Lion Air was initially determined.
The crash site.
On March 10th, an ET302 flight of Ethiopian Airlines crashed after 6 minutes of take-off. The aircraft involved was the Boeing 737MAX8. After the incident, according to the flight data, the industry analysts suspected that the MCAS system failed in ET302, and the nose swooped toward the ground shortly after takeoff.
It is reported that the MCAS system was originally an automatic security software developed by Boeing. The original intention was to prevent the 737MAX passenger aircraft from stalling. However, under abnormal conditions, the system may start automatically, causing the nose to lower, causing the nose to submerge.
According to Nandu’s previous report, after the Indonesian Lion Air accident killed 189 people, investigators said that the pilot had tried to fight the aircraft’s control system before losing control because of the wrong sensor data. "Struggle" more than twenty times.
After the Ethiopian Airlines incident, the Ethiopian government’s traffic captain publicly stated that according to the “black box” data, the Ethiopian accident had “significant similarities” with the Indonesian Lion Air accident.
At 3 o'clock on March 28, Boeing announced that it had completed the update of the 737MAX model software system, involving MCAS systems, other software, and crew program changes. Boeing said that after this update, if the sensor does not contract with the 襟冀 contraction, MCAS will not be activated and will be alerted to the pilot by the cockpit display indicator. In addition, in case the MCAS is activated under special circumstances, the crew can offset it by means of a tie rod. The US Federal Aviation Administration subsequently stated that the update of Boeing's anti-stall software has not been officially approved.
For the preliminary findings mentioned above, Boeing currently responded that the reasons for the two accidents have not yet reached a final conclusion.
Written: Southern Reporter Huang Chibo
