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17264048? ago

In recent news:

https://www.standardmedia.co.ke/article/2001316021/ethiopia-flight-had-unstable-vertical-speed-flight-tracking-site

http://archive.is/KUXRW

"unstable vertical speed"

In prior news:

https://www.google.com/search?biw=1366&bih=566&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2000%2Ccd_max%3A2018&ei=gS6FXMzVEYumjwSXhKe4Ag&q=%22unstable+vertical+speed%22&oq=%22unstable+vertical+speed%22&gs_l=psy-ab.3..0i324l2j0i3l3.58510.58510..58750…0.0..0.56.56.1……0….1..gws-wiz.Eh1YJrxRL8I

2000-2018 search for "unstable vertical speed" … 9000 ethopian hits

zero definitions

<god damn it.

What does "unstable vertical speed" mean? Stall? What are the mechanisms contributing to whatever "unstable vertical speed" means?

Thanks in advance, for all speculations and hints.

17669786? ago

It’s a little different than stalling. It just means that the rate of climb was too high and caused stresses that the plane couldn’t handle structurally.