Boeing 737-800 nosedive crash

[Uncle Fester]

Yes you are, but maybe it's my poor choice of words. No emergency calls, or any other communication which would automatically be a part any commercial pilot response. To me this has the distinct whiff of suicide.

There are redundant radios and the transponder was working until impact so some sort of electric power was available.

It is requires good skills with the stick to do a near vertical dive like that, locked elevator or stabiliser trim would have more likely resulted in a looping and flight trackers would have observed that, although that may be what they thought was a short recovery when it levelled out for a moment but it should have also climbed again significantly before it stalled and then fall down.

[mtv]

A sudden cabin decompression could account for a sudden (controlled) descent to where the aircraft levelled off to increase oxygen levels, however, not that steep and again... no radio communication.

Something or someone prevented communication.

Horizontal and vertical stabilisers, even aileron faults could be contributing factors.

The levelling off and slight altitude increase is very odd, like pilots have regained control briefly, then lost it again, but again... no radio distress calls.

It's not surprising in the video that there have been no human remains found... likely more accurately no 'intact' human remains have been found.

You see how the aircraft is largely just fragments... that's what happens to human bodies as well with an impact of that speed... they explode.

I have doubts the black (actually orange) boxes would have even survived.

An explosion on board, some other form of catastrophic systems failure or human intervention on the flight deck.

[enf]

Airbus and Boeing Planes currently rolling of the production line upload live most data to the cloud and to the company's HQ

I'll go with that on your sayso because I hadn't heard that. This is not something I study... BUT, this is China.........What cloud? What disease? what Uyghurs?

[Al Bundy]

…You see how the aircraft is largely just fragments... that's what happens to human bodies as well with an impact of that speed... they explode...

I would say the majority of those fragments are what had already broken away during the dive before it hit due to the structural stress of such a high speed dive, when Flight 93 crashed in Pennsylvania only 272kg of the 44 people on board was recovered the rest was destroyed/vaporised on impact and that came in at about 40 degrees and at 900kmh…

[RFI-EMI-GUY]

No mayday type call is the thing for me. Dropping, stablising, then diving is almost as if they (or he) wanted to crash at a particular place. That missile like dive just seems too deliberate....

There is no possibly way that a mayday is going to help the flight crew in that situation. They are likely very busy sorting out conflicting instruments and balky controls. The plane had a mishap. Either the control surfaces misbehaved or the instruments confused the crew (iced up pilot tubes) and they stalled the plane or went overspeed on the airframe. Dropping and stabilizing , diving sounds like the flight crew had almost saved the plane but ran out of options.

Over on pprune site, real pilots are discussing the many mechanical failures that could have precipitated this.

No mention of intentional acts on that site.

Aircraft are very complex beasts and sometimes all of the complex and redundant systems will grab you and kill you. Often by lulling the flight crew into complacency and fostering unwarranted trust in the machine.

Think about that when you buy a self driving coffin.

Sent from my SM-T350 using Tapatalk

[enf]

[QUOTE=RFI-EMI-GUY;855915...................................

Think about that when you buy a self driving coffin.

Sent from my SM-T350 using Tapatalk[/QUOTE]

I wouldn't buy a self driving coffin...and I wouldn't expect a bunch of pilots to give a whole lot of their time to the fact that one of their bretheren could have been a nutjob either.

Just wait and see...time will almost certainly reveal all that can be known.

[hoe]

Problem with pilots is they are even more arrogant than doctors.

They will never concede that they or one of their brethren could possibly be at fault....

I know a couple who won't watch air crash investigations for this reason.....

usages.kangaroos.sound

[Uncle Fester]

An update from the AVherald:

In a second press briefing on Mar 23rd 2022 the CAAC reported one of the black boxes has been found (no word on its condition though). ATC communication was normal until loss of communication (no emergency call or reports of difficulties), weather was okay. The captain had accumulated 6,709 flight hours total, the first officer 31,769 flight hours, the second officer 556 hours, all of them in good family relations.

[enf]

An update from the AVherald:

Thanks Fester...information...

[Al Bundy]

Apparently the black box is so severely damaged that they don’t know if it’s the flight data recorder or the cockpit recorder.

[enf]

Apparently the black box is so severely damaged that they don’t know if it’s the flight data recorder or the cockpit recorder.

Yeah, to be expected. There are so many possibilities, that conjecture is pretty useless.

Occams Razor. The pilot OR someone who has disabled the pilot.

[hoe]

Yeah, to be expected. There are so many possibilities, that conjecture is pretty useless.

Occams Razor. The pilot OR someone who has disabled the pilot.

It'll be those pesky uighurs.....

usages.kangaroos.sound

[mandc]

It'll be those pesky uighurs.....

They'll likely get the blame anyway

Good reason for China to crack down on them further and not get as much flack from other countries.

[enf]

It'll be those pesky uighurs.....

usages.kangaroos.sound

Uighurs? What Uighurs?

[wotnot]

[B52]

Faulty control whereby any the control surfaces is jammed in no way will maintain a straight line flight. There was No mayday no distress message ... Draw your own conclusion.

[Uncle Fester]

Faulty control whereby any the control surfaces is jammed in no way will maintain a straight line flight. There was No mayday no distress message ... Draw your own conclusion.

AVH latest:

On Mar 24th 2022 the CAAC reported in their 4th press conference, that a large piece of debris (1.3 meters by 0.1 meters) from the aircraft was found 10km away from the crash site (it needs to be pointed out, we don't know whether this separated before or after the dive at this time).

So it was separated before the dive or the dive was not as straight as initially assumed.

[enf]

AVH latest:


So it was separated before the dive or the dive was not as straight as initially assumed.

If it is a lightweight piece, it could have fluttered 10km? That's not a great distance from a height....

[Uncle Fester]

If it is a lightweight piece, it could have fluttered 10km? That's not a great distance from a height....

It is an interesting piece.
Long and thin piece of metal almost like a spear, not likely to travel for 10km before it falls down unless it was caught in a jet stream wind which is possible in that area but their cruising altitude was already a tad to low to catch it.

It could possibly be a trim surface from the elevator or rudder that was torn off in deflected state when the aircraft went supersonic.
If such a small trim surface came off before the dive it would have not caused any real problems. Plane would certainly be still controllable.

[Uncle Fester]

The graphs in this link show that it was not a pure vertical dive and the vertical rate of the flight is indeed uploaded live for those with receivers to track :


Ground speed (yellow) of the dive was significant, well over 500 knots, so the horizontal distance of 10km for the part is explained, torn off likely less than a minute after the dive commenced.
The ordeal lasted almost 2 minutes and it appears they had regained some control when the vertical speed started to drop about 30+ seconds later and about a minute later it looked almost manageable when aircraft 'levelled' out around 8000ft after which it inexplicably dropped like a stone.