Taiwan plane crash

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Big Kev
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Taiwan plane crash

Post by Big Kev »

I saw this on the news this morning. Holy hell.
Sadly 31 people died and several are still officially missing.

I assume it stalled and the lift from one wing was enough to flip it over but wow it went badly very quickly.

[youtube] [/youtube]
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Post by Duke »

Yep unbelievable & lucky there wasn't a lot more devastation & loss of life given how close it got to those nearby buildings.
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Re: Taiwan plane crash

Post by J.D. »

You can see he had no power. The aircraft was probably very close to stalling when it cleared the buildings but stalled just as the pilot was about to ditch in the river. I can't really explain it beyond that. Apparently the left engine is the one which flamed out and seems to be the critical engine. Another 20 metres might have made all the difference.

Here's a clearer one from slightly further back. Run it in 720p:

[youtube] [/youtube]

PPRuNe has a long thread on it:

http://www.pprune.org/rumours-news/5558 ... water.html
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Post by Duke »

I reckon that's spot on J. D.
Sure looks like a classic stall wing drop after loosing airspeed to clear the buildings.
How it got to the point is obviously going to be the focus of why it happened.
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Re: Taiwan plane crash

Post by ysu »

Latest news say it was engine failure.
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Re: Taiwan plane crash

Post by Duke »

Where was this news from? Was it both or just one engine did they say?
It sure looks like the left engine is out/seized as the prop looks stopped in the video.
But the right engine prop looks to be moving but I guess it could just be spinning & not producing thrust.
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Re: Taiwan plane crash

Post by Big Kev »

Seems the pilot might have shut down the wrong engine when one lost power.

Officials in Taiwan say they are investigating why both engines on a TransAsia Airlines plane were off when it crashed on Wednesday.

Data from the "black box" flight recorders retrieved from the wreckage suggests the pilots shut down one engine after the other lost power.
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Re: Taiwan plane crash

Post by Duke »

Big Kev wrote:Seems the pilot might have shut down the wrong engine when one lost power.

Officials in Taiwan say they are investigating why both engines on a TransAsia Airlines plane were off when it crashed on Wednesday.

Data from the "black box" flight recorders retrieved from the wreckage suggests the pilots shut down one engine after the other lost power.
That's a monumental FUBAR if true... :eyepop:
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Re: Taiwan plane crash

Post by J.D. »

Duke wrote:I reckon that's spot on J. D.
Sure looks like a classic stall wing drop after loosing airspeed to clear the buildings.
How it got to the point is obviously going to be the focus of why it happened.
Obviously I don't know much and other than a couple of flights on an ATR-72, I have little in depth understanding of it.

The videos seem to show both engines in low power. I don't think this is a result of the rolling shutter effect of the CMOS sensor in the dashcams. I think it is a part of the problem.

Current thinking in some circles is that the pilots simply shut down the wrong engine. That's kind of inconsistent but might explain the observations.

On the other hand, there's little doubt that this would be planned for in the simulator and the procedures practiced regularly.

From that point of view, it's hard to see how it could have happened.

On the other hand, the ATR-72 is supposed to maintain a positive rate of climb on take-off with one engine out and this clearly did not happen.

Since the others are no longer available:

[youtube] [/youtube]
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Re: Taiwan plane crash

Post by J.D. »

Some results of the investigation by Taiwan's Aviation Safety Council:

http://edition.cnn.com/2015/07/02/asia/ ... index.html
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