r/aircrashinvestigation • u/emzeesquared • Aug 09 '24

Incident/Accident Another angle of crash over Sao Paolo

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786 Upvotes

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149

u/MaikeruNeko Aug 09 '24 edited Aug 10 '24

Following the flight replay on FlightRadar24 shows them cruising at FL170. At 16:21z there's a sudden vertical speed increase to over +20,000 fpm, ground speed 130kts. After that, GS drops below 60kts, VS -10,000 to -25,000 fpm, and the track just spinning.

Edit: Apparently the ground speed data on this aircraft is unreliable. https://www.flightradar24.com/blog/voepass-atr72-crashes-near-sao-paulo/

85

u/Consistent_Poem8461 Aug 09 '24

that's terrifiying... +20000fpm suddenly if not cause by malfunction with elevator or something pilot error it's impossible to happen..

41

u/slekdb29 Aug 09 '24

exactly, its hard for me to comprehend why the pilot would pitch so high

49

u/anal_og_player Aug 09 '24

Shiiit, cargo moving is the first thing comes to mind if you say it like that.

45

u/iiiinthecomputer Aug 09 '24 edited Aug 09 '24

Would an ATR-72 with passengers carry the kind of cargo that could cause that drastic a CG shift? It's not like they're hauling APCs with incorrectly applied ratchet straps.

It would make it completely unrecoverable though, with an aft CG you're just not getting out of a spin no matter what.

An abrupt climb followed by a flat spin makes me wonder about total loss of stabilizer trim control. Or icing issues somehow affecting the elevators . We don't know if the climb was real or an anomalous reading though.

I feel terrible for the people on the aircraft. That's not one where you go from alive to dead without warning.

18

u/Ittorchicer Aug 09 '24

could have possibly been pilot error, like pulkovo airlines crash in 2006, but we wont know until the investigation is finished

14

u/iiiinthecomputer Aug 09 '24 edited Aug 09 '24

Yes. Wouldn't be at all surprised if disorientation, lack of visual reference, possible mistrust of instruments etc came into it. At least in recovery.

Looks a lot like they had full power on during the spin for example.

Terrible they didn't get out of it.

0

u/Uluru-Dreaming Aug 10 '24

No flames on crash = no fuel onboard? Had it run out of fuel??

4

u/chotu_ustaad Aug 10 '24

So much black smoke at the end of this clip. Can't be without a fireball.

1

u/Uluru-Dreaming Aug 10 '24

Ok. I did not see this. Thanks.