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Korean 773 Blows MLG on ldg with clip ...

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Korean 773 Blows MLG on ldg with clip ...

Old 30th Jun 2018, 03:45
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Korean 773 Blows MLG on ldg with clip ...

Hummmm....not a good week at all for Korean Aviation ...


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Old 30th Jun 2018, 05:48
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If it's a Boeing, I'm not going!
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Old 30th Jun 2018, 06:08
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Well, that Boeing is certainly not going anywhere for a while!
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Old 30th Jun 2018, 07:44
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A bit of PIO low down but the actual touchdown didn’t look too hard?
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Old 30th Jun 2018, 07:54
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Yeah. A little bit wobbly but Iíve done far worse than that. Looks like some kind of failure in the right gear assembly, not necessarily related to the touchdown. Main gear steering problem, perhaps?
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Old 30th Jun 2018, 07:58
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Originally Posted by ACMS View Post
A bit of PIO low down but the actual touchdown didn’t look too hard?

Must admit having looked at it a couple of times I’ve been thinking similar...

Sure there’s what looks like period of what looks like roll PIO and also what appears to be a fairly dramatic but brief reduction in pitch attitude at one point but it doesn’t look like the ROD was massive at touchdown and it doesn’t appear that the truck was thumled into the ground due to a high roll rate...but appearances can be deceptive so it will be interesting to see what “g” was recorded...wonder if we ever will?

Fullwings: just seen your comment about maingear steering - looking at the image of the gear I see what you mean...
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Old 30th Jun 2018, 08:04
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Interesting to see how the forward wheels aren't taking much weight: the poor centre wheels is almost squashed to the ground!
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Old 30th Jun 2018, 08:20
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Originally Posted by Council Van View Post
That appears to be a little bit more than a blown tyre.
Nicely understated! Wheels all wonky, etc. One wonders how much harder it'd have to have been for the gear to have collapsed. Sturdy things.

You can see a certain wobbliness in the approach, quite a lot of yaw to the right just before touchdown (I can't see right rudder being applied), lots of up-elevator just as its touching down, and a boot full of left rudder as the right hand gear gets mushed into the runway. I don't know if it's just the video compression hiding things or not, but the left rudder seems to be applied very suddenly. It looks like it was quite blustery - the grass is getting blown around a lot. Just a bad day at the office? ACMS pointed out that the touchdown itself didn't look very hard. I wonder if it was quite hard, and a lot sideways?

Last edited by msbbarratt; 30th Jun 2018 at 08:32.
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Old 30th Jun 2018, 08:54
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Old 30th Jun 2018, 09:12
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Assume there is a cycle life limit on the landing gear. Any more info about that? The landing itself looks not that bad and no tire did burst. The banana ist still straight so I doubt that this was a hig G landing.
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Old 30th Jun 2018, 12:28
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Steering axle failed - possibly corrosion?
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Old 30th Jun 2018, 14:10
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The gear probably gave up after numerous wonky landings.
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Old 30th Jun 2018, 15:13
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Blocked wheels righthand...?
But visible part of tyres dont look that bad..
so would require flat spots on the opposite side...
Would not be enough for an axle overload like that...
Wobbly approach...
what if it had blocked wheels and touched down rh first?
Would have to look at that on a bigger screen than this mini ipad...
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Old 30th Jun 2018, 19:45
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Since its a 300, can the actuator for the levered gear lock so all the weight remains on the rear as it settles down? It appears from the rear view picture that the rears are pointing toward the engine like the rears were taking a heavy side load as it touched down, but it also needed a heavy vertical load to camber them apart like that. Looks kind of like a friend's car when the shop dropped it off their lift.
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Old 30th Jun 2018, 19:47
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I like the guy in the photo: ďHmmm, Iím pretty sure itís not meant to do that...?"

An interesting failure mode. The (titanium?) shaft that forms part of the bogie appears to have split underneath and allowed the rear wheels to rotate upwards. I would be surprised if this isnít some kind of defect as youíd expect the tyres to go before the undercarriage starts coming apart...
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Old 30th Jun 2018, 20:04
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Originally Posted by NWA SLF View Post
Since its a 300, can the actuator for the levered gear lock so all the weight remains on the rear as it settles down?
If you're referring to the semi-levered gear, that's only on the 777-300ER. This was a 777-300, not an ER.
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Old 1st Jul 2018, 01:18
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Originally Posted by FullWings View Post
I like the guy in the photo: ďHmmm, Iím pretty sure itís not meant to do that...?"

An interesting failure mode. The (titanium?) shaft that forms part of the bogie appears to have split underneath and allowed the rear wheels to rotate upwards. I would be surprised if this isnít some kind of defect as youíd expect the tyres to go before the undercarriage starts coming apart...
There was a special check some years ago for corrosion in the axles of 777's - thought all the aircraft worldwide would have been inspected by now though.
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Old 1st Jul 2018, 12:37
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HD version shows it much better, a float, then a sudden pitch down on right landing gear. (note that on youtube, when in HD, under settings, you can have the video play at 0.25 speed)



Nailed it! (the landing that is) Right gear hits so hard that left gear comes off runway)


Now the rebound from the right hitting so hard

Last edited by underfire; 1st Jul 2018 at 12:56.
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Old 1st Jul 2018, 13:18
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4 Reds! Unstable! Go Around!

Originally Posted by Underfire
Nailed it! (the landing that is) Right gear hits so hard that left gear comes off runway)
You will note that the left bogie is almost flat, meaning it is on the ground...
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Old 1st Jul 2018, 14:20
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I note , no one here has mentioned the sparks from the right MLG after touch down , followed by occasional smoke trailing behind .
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