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Crash at Sharjah airport

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Crash at Sharjah airport

Old 23rd Oct 2009, 12:47
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A caution about the video clip.

The display rate is far different from the capture rate. Thus all moving objects appear to move at very high speed (lots of frames missing).

since a heavy object would reach the ground about the same time the plane did (only slightly later)the timing in the picture does not match.

again, any objects big enough to be seen in the video have no doubt already been recovered and identified so ask somebody on-scene.
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Old 23rd Oct 2009, 12:54
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since a heavy object would reach the ground about the same time the plane did
I don't think so. The energy of the plane is much greater.
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Old 24th Oct 2009, 10:47
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According to the local papers today, the object was an engine cowling. (quote from director of the GCAA).
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Old 24th Oct 2009, 12:26
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At 38 seconds into the film does not appear to be a falling object, if you freeze it and advance, it appears to be the aircraft out of control, descending.
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Old 24th Oct 2009, 13:19
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Guy, can you post a link which confirms that please?
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Old 24th Oct 2009, 13:39
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I seem to remember a website which allows one to trace an aicraft's ownership history.

I was interested on the history of this 'old' plane.

Can anyone remind me of the link .... thanks
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Old 24th Oct 2009, 14:10
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looks just like the file photos taken of the AA DC-10,...not wishing to speculate but it would be nice to know what fell off and if they lost rudder boost or hydraulics

PA
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Old 24th Oct 2009, 15:07
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Hydraulics for the rudder boost is provided by electric pumps, which operate full time...aux system, which also supplies some spoilers, as I recall.
The utility system (engine driven pumps) supplies the rest, gear, brakes, nose steering, flaps, some spoilers etc...with a system interconnect, that can only be used on the ground...except for ex-PanAmerican aircraft, of course.
PanAm had a reason for using the system interconnect in the air...very slow retraction of the landing gear, in the event one or more MLG trucks were not level.
Had to use this one time only with an ex-PanAmerican aircraft...worked like a charm.

Returning to rudder boost, there was one accident wherein the boost worked fine, however the rudder did not respond as it should...a Western Airlines 720B on crew training at KONT, years ago.
The rudder horn fractured during an engine-out go-around...the airplane rolled over smartly, right now.
All died.
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Old 24th Oct 2009, 15:18
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411A could they have also lost the rudder boost via another failure? to cause the roll what would an engine separation takeoff probably do to the bird---I have 707 manuals but not here

PA
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Old 24th Oct 2009, 15:32
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If the engine seperated or just the cowl came off perhaps a piece struck the horizontal stab and in turn caused a catastrophic control loss.

One lost an oil fill access door on a B757 with an unbeliveable amount of damge to the horizontal stab although not enough to render the aircraft uncontrollable. One could only imagine what something larger might do.

Disclaimer; Not suggesting that anything like this is/was the cause of this accident. Also, my recollection is that with the loss of rudder boost in the 720B at least, VMCA is somewhere around 180+ knots.
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Old 24th Oct 2009, 22:06
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I was interested on the history of this 'old' plane.

Can anyone remind me of the link .... thanks
Find here a photographic histiry:
http://www.airlineindustryreview.com/st-akw-a-photographic-farewell/

And some facts here, note the history in lower left corner:
http://www.jacdec.de/info/2009-10-21_ST-AKW.pdf
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Old 24th Oct 2009, 23:29
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Continuing the speculation: If it was an engine cowel that came off then possibly that was the result of an uncontained engine failure that did a whole lot more damage, we shall just have to wait and see.
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Old 25th Oct 2009, 07:44
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Falling object was "a piece of engine cover", says the local CAA director:

Arabian Supply Chain Online Middle East | ArabianSupplyChain.com
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Old 25th Oct 2009, 08:02
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The history of the aircraft involved is covered in the Wikipedia article on the crash.

Azza Transport Flight 2241 - Wikipedia, the free encyclopedia
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Old 25th Oct 2009, 08:30
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Visually, strikingly similar to American 191.

American Airlines Flight 191 - Wikipedia, the free encyclopedia

Factually, the similarities so far are limited to a) an engine(part) separation at takeoff followed by b) an extreme unusual attitude in roll.

Chilling video.
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Old 25th Oct 2009, 13:42
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If the found engine cowling. For my that's engine explosion witch can effect control surfaces
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Old 25th Oct 2009, 16:03
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If the found engine cowling. For my that's engine explosion witch can effect control surfaces
Quite a premature speculation with too many missing links of factual evidence. It would be far more productive to search for the missing factual links then to speculate that all the links in the causal chain must have lined up ... leading to your conclusion
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Old 26th Oct 2009, 06:08
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Super VC-10

Sorry, wasn't on yesterday, here you go.

Crash inquiry focuses on old engines - The National Newspaper


Can't confirm anything, just a news paper quote....take it with as much salt as you think necessary!!

Guy

edited...link fixed
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Old 26th Oct 2009, 12:36
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Thanks Guy, I've used the National article to expand the Wikipedia article on the crash.
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Old 26th Oct 2009, 13:58
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I enhanced the video of the crash.

You will see that there is more falling after the "cowling", it looks like fuel falling 0:24 > 0:34.
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