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Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

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Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#2
The plane transited from an air stream (of whatever velocity/vector) into one descending vertically at high speed = instant down elevator = passengers in free fall as plane descends = impact roof hard/soft. Soon exit the stream and get used to it = fall down hard from 7-8 feet in random attitude. Down is the worst, a vertical up = pressed into seat and already standing. Pilot might have had a warning or inkling = faster seat belts/sit. In a down acceleration like this all loose objects are affected = missiles, a laptop can hit you hard. Back in the old days, they called these 'air pockets' - lacking velocity they were less dangerous than these occurrences at modern speeds where planes are going at 500-600 miles/hour and the transition is virtually instantaneous.

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#3
post #2

The plane transited from an air stream (of whatever velocity/vector) into one descending vertically at high speed = instant down elevator = passengers in free fall as plane descends = impact roof hard/soft. Soon exit the stream and get used to it = fall down hard from 7-8 feet in random attitude. Down is the worst, a vertical up = pressed into seat and already standing. Pilot might have had a warning or inkling = fas…

Thanks for providing your perspective - Why don't we hear about these as often? Is there tech to avoid these air pockets? Was there some kind of negligence involved or should I be more cautious on planes about leaving my loose belongings lying around?

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#4
post #2

The plane transited from an air stream (of whatever velocity/vector) into one descending vertically at high speed = instant down elevator = passengers in free fall as plane descends = impact roof hard/soft. Soon exit the stream and get used to it = fall down hard from 7-8 feet in random attitude. Down is the worst, a vertical up = pressed into seat and already standing. Pilot might have had a warning or inkling = fas…

The article says it was a technical problem. The pilot said he lost instrumentation.

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#6
This seems to be attributed to a technical problem and not turbulence so far. Probably should be a bit skeptical about any explanation this early, but I'm wondering which systems would be powerful enough to cause something like this.

For example, would a pilot be able to manually fly the airplane and cause this kind of incident? Or would the control surfaces of the plane be able to cause this assuming that any safety limits that restrict movement were not working?

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#7
post #5

What I don't get is why people are not using seatbelts. The only time I'm not using it is when I'm on the way to and from the bathroom. If I'm seated I'm using the seatbelt.

My god could you imagine if this happened when you were in the bathroom?

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#8
post #2

The plane transited from an air stream (of whatever velocity/vector) into one descending vertically at high speed = instant down elevator = passengers in free fall as plane descends = impact roof hard/soft. Soon exit the stream and get used to it = fall down hard from 7-8 feet in random attitude. Down is the worst, a vertical up = pressed into seat and already standing. Pilot might have had a warning or inkling = fas…

[deleted]

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#9
post #6

This seems to be attributed to a technical problem and not turbulence so far. Probably should be a bit skeptical about any explanation this early, but I'm wondering which systems would be powerful enough to cause something like this. For example, would a pilot be able to manually fly the airplane and cause this kind of incident? Or would the control surfaces of the plane be able to cause this assuming that any safety…

It's very easy to get to slightly below 0g by just pushing on the stick or yoke, and that would be enough to cause what the passengers describe here. You could even get well below 0g. Almost all turbulence of the sort that you can experience in flight are not even 10% of the durability limits of the airframe.

EDIT: I was also thinking about "well why should the airplane allow the pilot for such movements then?". And I think a good analogy is the brakes in your car - they do allow for maximum breaking, yet when was the last time you actually pushed it to the max?

(And note that this is 100% speculation, I just wanted to highlight that the pilot can cause such negative acceleration on their own)

Re: Latam Airlines SYD to AKL flight: 50 people treated after mid-air incident

#10
post #5

What I don't get is why people are not using seatbelts. The only time I'm not using it is when I'm on the way to and from the bathroom. If I'm seated I'm using the seatbelt.

After the recent incidents, I’d love to see zip line style safety lines in planes. When you get up to use the lavatory, you’d connect your carabiner to the aisle ceiling and floor lines to keep you level in case of a sudden movement.
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