I am especially heavy hearted, 你看看这个

It just woke up the pain very deep inside me.   My cousin's husband and his colleague were both killed in the China Southern 3942 crash. His colleague's family just lost another son in a traffic accident   a month before 3942 crash. It was an older model Boeing 737.

I was very close to my cousin's family. The time their daughter just started to learn speaking. 

这是此次空难后文学城网友跟帖，我截屏留念。我也飞过附近航线，一架看着旧旧的Boeing 737, 想想有些后怕。

你看一下新旧Boeing 737的发动机吊舱对比， 旧款的发动机细完全吊在机翼下方，新款的发动机短直径大，所谓大涵道比发动机，技术先进，节能，因为直径太大不能直接吊在机翼下方，Beoing737 没有重新设计机体，就把发动机位置前移，整个伸出机翼之外，新型的737都是这种样子，包括最新的Max, 与800,700 结果是重心发声了偏移，所以Boeing设计了一套增生装置。所谓 Maneuvering Characteristics Augmentation System. MCAS 去补偿重心的偏差，埃塞俄比亚与印尼狮航的坠机事故都是这套增生装置失效。波音负全责。

看这个Max的发动机下方，明显不是圆形，扁了，还是因为要增加地面距离，否者大点颤动几乎要触地。

CCTV footage from a nearby mine, shared online and verified by Jimu News and the Wall Street Journal, purports to capture the plane’s horrifyingly steep final descent, plunging at just 35 degrees off vertical.

但是MU5735,事故也很蹊跷，飞机以与垂直面夹角35度砸向地面。它瞬间掉高的位置正是从平飞巡航改到要进场开始降低高度的地点，2分钟掉高7000米，后来有个爬升过程，似乎是机组在试图挽救。然后就是再次头朝下坠毁。如果飞机还有空速，即使两台发动机完全停车，飞机也会小角度滑翔，斜飞，不应这么直直地掉下去。坠毁前应该是在高空stall了