[Rockpile]

Aviation safety net has a chart showing the vertical speed. Looks like the A321 was climbing around 500 fps when the diaster hit. The next 30 seconds of up and down movement is astonishing. Looks like the crew were fighting like crazy to control the plane. Possibly severed elevator controls.

[TXnMA]

Do you have a link to that aviation safety net data?

Meanwhile, I'll search for it... '-)

[TXnMA]

The Air Safety Net vertical speed RADAR plot is copyrighted, but you can take a look at it here. Those last 25 seconds of violent porpoising (or tumbling) must have been hell on all those poor passengers. There must have been a total loss of elevator control (or horizontal stabilizers themselves -- or the entire tail section) to turn that flying airplane into a falling leaf in seconds...

And all the Flightradar24 data for the last minute of the flight -- including groundspeed and altitude plots are available here.

After 04/06:12:57, the ground speed dropped precipitously from 408 knots to 62 knots in 16 (sixteen) seconds. That thing went from a plane in flight to a porpoising, tumbling, falling -- and probably disintegrating -- mass of rubble in a quarter of a minute.

~~~~~~~~

I'm going to to say prayers of sympathy for those poor folks (and, probably have nightmares) tonight...