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BANGKOK 19 June 2019 18:44
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webfact

Nok Air's plane skids off runway in Trang Province

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To clear up some points of comments made in this thread. I am not a pilot nor have no technical knowledge but this is the conditions and what happened from my point of view.

It was NOT raining at the time of the accident or at the very least it was very very light rain. It had rained very heavily about 10 minutes or so before departure from the terminal.

There is only one runway with no parallel taxiways at Trang airport just as the Google map shows.

The plane left the terminal and "hurried" down the runway I assume to try to make up for being a bit late. It then made or started to make a U-Turn at the end of the runway which is normal. However, power was applied while the aircraft was still turning and was not aligned at takeoff middle line. The aircraft kept turning and it seemed the wheels did not straighten until too late so it went off the runway at low speed.

Edited by buckdoff
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To clear up some points of comments made in this thread. I am not a pilot nor have no technical knowledge but this is the conditions and what happened from my point of view.

It was NOT raining at the time of the accident or at the very least it was very very light rain. It had rained very heavily about 10 minutes or so before departure from the terminal.

There is only one runway with no parallel taxiways at Trang airport just as the Google map shows.

The plane left the terminal and "hurried" down the runway I assume to try to make up for being a bit late. It then made or started to make a U-Turn at the end of the runway which is normal. However, power was applied while the aircraft was still turning and was not aligned at takeoff middle line. The aircraft kept turning and it seemed the wheels did not straighten until too late so it went off the runway at low speed.

I'm only speculating too, but I find that scenario highly unlikely. To achieve that, the pilot would have had to firewall the throttles at the start of the turn, keep a boot full of rudder in, and fail to close the throttles or apply the brakes, probably both!!

I can't find any information on whether the runway is grooved or not, but that would be irrelevant if it was at low speed or heavy rain wasn't falling at the time anyway.

Does anybody know the actual position, relative to the runway, in which the aircraft sank to the axles?

As I said at the start of my post, I am only speculating also, but depending on the position of the bogged aircraft, I think it highly likely that the crew were taxiing too fast as they approached the turning point at the end of the runway where they veer left to make a right turn onto the center line, or that the take off was aborted, and they attempted to turn off onto a taxiway at a speed too great for a right angle turn (no high speed exits at Trang which go off the runway at about 30 degrees to the centerline).

The second scenario is most likely, based on what the Airport Director, Mr Tavorn, said, or is reported to have said, in post # 1, but some of the other things he is reported to have said make no sense, so......................??

Edited by F4UCorsair

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Ummm, I'm not speculating, I was on board the plane.

I was sitting in seat A on the left hand side of the aircraft, a window seat so I had a good view when we made the U-Turn.

The plane didn't "slide" off the runway, it was going the way the the wheels were turned and simply went off the runway.

It was not going too fast when he made the U-Turn, but for some reason the wheels didn't turn back to straight when we were lined up on the center line. I'm assuming it had something to do with the abnormal amount of power that was applied before the plane was aligned with the center line on the runway.

The plane wound up like you see it in the pictures at an angle to the runway, One of the pictures shows the wing wheels tracks which plainly show it wasn't "sliding".

That's exactly how it happened, end of story.

Edited by buckdoff

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Ummmm, what a shame you didn't enlighten us all much earlier and 4 pages of speculation could have been avoided!!

It's difficult to believe that even an inexperienced pilot could have put an aircraft in this position.

I'm intrigued by the pictures though. There seems to be tarmac at right angles to the runway immediately behind the aircraft??? It's at the wrong angle to be part of the turning node, and appears to be a taxiway.

Edited by F4UCorsair

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Ummmm, what a shame you didn't enlighten us all much earlier and 4 pages of speculation could have been avoided!!

It's difficult to believe that even an inexperienced pilot could have put an aircraft in this position.

Sorry I didn't do it sooner but I was a bit frazzled and was hurrying to catch my plane travelling back to the states but I did post it the next morning after I arrived.

Believe what you may, i'm only relating my experience. Isn't it possible that there was a malfunction in the steering?

On a brighter note, the Nok Air and Trang airport staff handled the situation very nicely. Can't say the same for the miserable crowded van ride to Hat Yai to catch the next flight to Bangkok though, that was not fun.

Edited by buckdoff

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Certainly can toss any of the original topic post out the window then, nothing was correct in it.

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Ummmm, what a shame you didn't enlighten us all much earlier and 4 pages of speculation could have been avoided!!

It's difficult to believe that even an inexperienced pilot could have put an aircraft in this position.

Sorry I didn't do it sooner but I was a bit frazzled and was hurrying to catch my plane travelling back to the states but I did post it the next morning after I arrived.

Believe what you may, i'm only relating my experience. Isn't it possible that there was a malfunction in the steering?

On a brighter note, the Nok Air and Trang airport staff handled the situation very nicely. Can't say the same for the miserable crowded van ride to Hat Yai to catch the next flight to Bangkok though, that was not fun.

It is possible the steering malfunctioned (only one steering system [unless the operator has ordered the 'alternate option', in which case there may be two] as opposed to three hydraulic, three electrics, etc) but if the pilot had closed the throttles, or applied the brakes, or both, it couldn't have escalated to where it did. The brakes can hold an aircraft stationary, even at full power.

The argument against a steering malfunction is that if the steering was locked at, say, 20 degrees off straight ahead, the aircraft would have continued turning and finished at right angles, or greater, to the runway, not just off a few degrees.

Are you able to sketch a pic, scan and post, of where the aircraft actually bogged? I can't figure it out from the pics early in the thread, with the strip of bitumen behind the aircraft which appears to come off the runway at right angles, creating confusion.

Quite right Tywais, noting in the statement from the airport director was correct, or very badly misreported, something for which the press are well noted.

Edited by F4UCorsair

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See with our proving disbelief TV users evententually get to the correct answers......or at least more correct than the press.

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buckdoff, are you able to post, or even send me, a sketch of where the aircraft finished relative to the runway. I can't figure out where it was from the pics I've seen, and I'm intrigued how this happened.

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buckdoff, are you able to post, or even send me, a sketch of where the aircraft finished relative to the runway. I can't figure out where it was from the pics I've seen, and I'm intrigued how this happened.

I don't have much in the way of graphic skills and I tried using Paint but my hand wasn't steady enough to draw a reasonably straight line. I am at my daughter's house and I will be home to my desktop comp next week and I think I have an old Corel Draw program that I can do it with there, so please be patient.

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Thanks. I look forward to that. it doesn't have to be a professional job, but I am really interested in your impression of the actual path of the aircraft, to where it was bogged.

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