Plane Crashes

Beau said:
Another video of the crash. Doesn't look like wind was the cause.

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Judged only on that and on the other video it looks like the plane had way too much downward force at the point when the wheels touched the ground? Possible explanations:

- Human error
- Technical failure

Or a combination of both.

I guess wind could have also caused way too much downward force, although I find that quite a bit unlikely.

If I‘m guessing correctly a plane normally will reduce the downward force as much as possible before touching ground by „going up, shortly before that“? That doesn’t look like it happened there.
 
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Beau said:
Delta flight originating from the US crashes at Toronto airport, flipping on its back. Looks like no casualties.

nypost.com

Delta Air Lines confirms no fatalities after plane crashes, flips upside down at Toronto Pearson International Airport, leaving 18 injured — miraculously none critical

Three passengers on a Delta Air Lines flight including a child were critically injured when the plane crash-landed and flipped upside-down at Toronto Pearson International Airport on Monday.
nypost.com nypost.com

View attachment 106018
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There is something bugging me about the scenes like this after the crash. There are hardly any emergency crews out and around this plane as people are coming out. Most don't even have coats on and the wind chill would have been around -20C. Any plane crash I've seen in the media, the site is usually flooded with emergency/rescue vehicles. It's like these people had to fend for themselves. Very odd (osit).
 
Looking at both bits of footage of it landing, as soon as it touches down to leans heavily to the right - at which point the wing hits the ground and is ripped from the plane.
The first (unclear) footage looks like it hit the ground too hard, but this one looks like a good landing speed. Maybe every tyre on the right hand side blew out? Or maybe it did hit too hard?
The movement from landing position to leaning right happens in less than a second (between 7 and 8 seconds on the video above).

I think the most likely cause then is the right hand landing gear collapsed (from a hard landing), causing the plane to lean right and land on the wing.
 
Charade said:
This is the only photo I’ve seen so far. Regional carrier flown by Endeavor Airlines for Delta Airlines. Looks survivable. All crew and passengers accounted for. Looks tricky to deplane tho. I worked on these CRJ 900 aircraft.
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I thought of you, the moment I saw this.
Tricky as all get out, definitely.
Just a note, for those on the forum wondering about where were the “First Responders”.
Well, they were already ON the plane.
That’s the true purpose of that nice person who brings you cookies and juice, and a blanket when you ring the bell.

This write up and photo were posted on a Facebook group page.

“Today's Sky Heroes!
Amid the chaos of Delta Flight 4819’s crash in Toronto, this Endeavor Air (Delta) flight attendant is seen moving passengers to safety from inside the upside-down aircraft, ensuring all 76 passengers and made it out safely.

With fire crews rushing to the scene, the flight's brave crew proved yet again that in moments of crisis, flight attendants are more than just service providers — they are first responders.”

B8E1B8E7-2397-4882-9ED4-9E93CBBFC36B.jpeg
 
Debra said:
I thought of you, the moment I saw this.
Tricky as all get out, definitely.
Just a note, for those on the forum wondering about where were the “First Responders”.
Well, they were already ON the plane.
That’s the true purpose of that nice person who brings you cookies and juice, and a blanket when you ring the bell.

This write up and photo were posted on a Facebook group page.

“Today's Sky Heroes!
Amid the chaos of Delta Flight 4819’s crash in Toronto, this Endeavor Air (Delta) flight attendant is seen moving passengers to safety from inside the upside-down aircraft, ensuring all 76 passengers and made it out safely.

With fire crews rushing to the scene, the flight's brave crew proved yet again that in moments of crisis, flight attendants are more than just service providers — they are first responders.”

View attachment 106032
Click to expand...
I love that she is still smiling! She’s a good flight attendant. We never practiced evacuations from a plane that was upside down. Wonder if that will be added to annual training practice scenarios? 🤔
 
Beau said:
Blancolirio breaks down the Toronto crash. Looks like pilot error.

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Very good analysis. Lots of questions remain unaswered. Certainly looks like a 'flat' rather than a 'flared' landing. Both main landing wheels were down for landing. Main question, what made the right wing snap off? Was the right landing gear locked in place or not?
 
Ollie said:
Very good analysis. Lots of questions remain unaswered. Certainly looks like a 'flat' rather than a 'flared' landing. Both main landing wheels were down for landing. Main question, what made the right wing snap off? Was the right landing gear locked in place or not?
Click to expand...
It seems that steel is used for airplane landing gear and the weather seen in the video was very, very cold, so I looked at what happens to steel in extreme cold:

The most commonly used steels for landing gear are 4130, 4340, 4330V and 300M.

At low temperatures, steel becomes more brittle. This is because the cold causes the atoms to move with less energy, which makes it difficult for the material to plastically deform. Under extreme conditions, steel can become brittle.
 
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