South Korean Plane Crash

[Hippea]

https://www.bbc.co.uk/news/live/c4glr85l2ldt

Not something you expect to see these days, very sad.

[rodericb]

Jeepers - those poor people.

South China Morning Post youtube:

[Hippea]

rodericb said:

Jeepers - those poor people.

South China Morning Post youtube:

That’s horrific footage, it doesn’t seem to slow down when on the ground at all

[Starfighter]

No brakes and no reverse thrust. It is all down to friction at that point.

Does anyone know why belly landings are done on concrete and not the grass?

[Earthdweller]

Another 737 went off the runway in Olso a couple of days ago, not with the tragic results of this mind

[TeamD]

Starfighter said:

No brakes and no reverse thrust. It is all down to friction at that point.

Does anyone know why belly landings are done on concrete and not the grass?

Most peculiar that the BBC coverage is waffling on about bird strikes and adverse weather but has completely failed to mention that the undercarriage was not down!

[spikyone]

Starfighter said:

No brakes and no reverse thrust. It is all down to friction at that point.

Does anyone know why belly landings are done on concrete and not the grass?

What grass do you expect them to land on? Anything next to the runway will be crossed by taxiways and access roads, with various lights, signage, and other furniture, and will be completely unsuitable for landing an aircraft.

Other reasons:
- one engine is likely to touch down before the other, which would immediately cause the aircraft to yaw
- if the ground is soft it won't be uniformly soft and there's still a high probability of the aircraft digging in on one side
- on grass, there are lots of things that can be sucked into a functioning engine

Simply put, the runway is designed for landing. Anything else isn't. You don't want to increase the danger by putting a plane down somewhere that it's not intended to be landed.

[Legend83]

Hippea said:

rodericb said:

Jeepers - those poor people.

South China Morning Post youtube:

That’s horrific footage, it doesn’t seem to slow down when on the ground at all

Possibly attempting another go-around?

[Richard-D]

Starfighter said:

No brakes and no reverse thrust. It is all down to friction at that point.

Does anyone know why belly landings are done on concrete and not the grass?

There's also access for all the emergency response vehicles and personal to consider.

[Mr Whippy]

They need those giant nets and/or arrestor hooks for emergencies.

Such a shame they were down, but just ran out of time/space


Wonder why they didn’t get the gear down? Isn’t gear down some kind of very robust and safe system, ie, you can almost always get it down somehow?

[Square Leg]

Christ, that video is sobering

[Puddenchucker]

Mr Whippy said:

Wonder why they didn’t get the gear down? Isn’t gear down some kind of very robust and safe system, ie, you can almost always get it down somehow?

Speculating here, but if the plane had lost power from both engines due to bird strikes would they have had electrical/hydraulic power to lower the landing gear? And if they were already commited to descent/landing without engine power they may not have had time to lower the gear manually and a go-around would not have been possible.

[gotoPzero]

Yikes thats bad.

I also wonder if they forgot the gear under the work load. 737 gear will drop under gravity if needs be.

To me looked like a mid field landing, possibly no flap? Hard to tell. Ran out of runway, used the over run and ran straight into the ILS whilst still doing well over 80kts, which unhelpfully was on a big mound that looked 20ft high. Nasty.

[Eric Mc]

No flap, no slats and no spoilers - coupled with no gear. Looks like no hydraulic power available.

This resulted in a very high touch down speed - probably around 200 mph - and then touching down too far up the runway.

Finally having the ILS system housed in a reinforced concrete bunker may not have been a very good idea.

[eliot]

Some initial analysis, someone said in the comments that it was a go around after bird strike.
https://youtu.be/w1r8dl4RqMw?si=a4FWLo54FZ-WZnsJ

[isaldiri]

Square Leg said:

Christ, that video is sobering

Er this. That's pretty grim to watch even the short clip on bbc news just now.

[marksx]

Starfighter said:

No brakes and no reverse thrust. It is all down to friction at that point.

Does anyone know why belly landings are done on concrete and not the grass?

It looks to have reverse thrust engaged, albeit not effective.

[Master Bean]

Made me think of the LOT 767 landing although that had flaps and spoilers.

https://youtu.be/UC8ySY_GlUk?si=FuVbdRttJYG6kCfE

[Super Sonic]

Already a thread on this
https://www.pistonheads.com/gassing/topic.asp?h=0&...

[Otispunkmeyer]

Earthdweller said:

Another 737 went off the runway in Olso a couple of days ago, not with the tragic results of this mind

I think this will turn out to have been made worse by the way the ILS array was built at the end of the runway. It seems to have been a reinforced concrete structure which was then covered in earth creating a kind of berm. I have no idea why you would build something so substantial at the end of the runway. it doesn't appear to be a conventional construction reading around. Normally the arrays are just on the ground and if they need to elevate them they're mounted on pylon type structures. Can you imagine the people on the plane thinking they've maybe cheated death, the plane is on the ground at least and will skid to a halt right? Only to plow into a concrete bunker at the end of the runway at considerable speed.