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re: Boeing 737 Crashes in China. 132 on board

Posted on 3/21/22 at 9:21 am to
Posted by 777Tiger
Member since Mar 2011
88790 posts
Posted on 3/21/22 at 9:21 am to
quote:

If they are adding flaps at that altitude and speed, then it would be the CAUSE of the accident.



yeah, flaps/slats aren't used at altitude, or not at least since Hoot Gibson did at TWA
Posted by Diseasefreeforall
Member since Oct 2012
7202 posts
Posted on 3/21/22 at 9:21 am to
There was a rudder issue on the UAL flight 585 737 that crashed after an almost vertical dive in Colorado Springs in 1991. The remains of that plane were really smashed and caused a big crater.

Even with the rudder problems a week before the crash, the investigation didn't state them as the cause of the crash until another 737 crashed in Penn 3 years later and there was another nonfatal incident a few years after.

The final determination was:
quote:

The National Transportation Safety Board determines that the probable cause of the United Airlines flight 585 accident was a loss of control of the airplane resulting from the movement of the rudder surface to its blowdown limit. The rudder surface most likely deflected in a direction opposite to that commanded by the pilots as a result of a jam of the main rudder power control unit servo valve secondary slide to the servo valve housing offset from its neutral position and overtravel of the primary slide.

Posted by Roll Tide Ravens
Birmingham, AL
Member since Nov 2015
50997 posts
Posted on 3/21/22 at 9:21 am to
quote:

There’s more than 1 pilot in board. I don’t understand how that could happen.


Read about Germanwings Flight 9525 that crashed in France in 2015. Captain left the cockpit, possibly to use the bathroom, suicidal co-pilot locked the Captain out and crashed the plane into a mountain side.

Not saying that's at all what happened here, of course.
This post was edited on 3/21/22 at 9:22 am
Posted by Tigeralum2008
Yankees Fan
Member since Apr 2012
17630 posts
Posted on 3/21/22 at 9:22 am to
quote:

If it's true they were starting their descent, in a few years we will learn it was something to do with the flaps failing or getting stuck and the pilots overcorrected it

If they are adding flaps at that altitude and speed, then it would be the CAUSE of the accident.


777 could answer this. Wouldn't the computer veto that request?
Posted by IceTiger
Really hot place
Member since Oct 2007
26584 posts
Posted on 3/21/22 at 9:22 am to
quote:

If they are adding flaps at that altitude and speed, then it would be the CAUSE of the accident.


It would might be the first or third CAUSAL event in the report.

There's a series of events each being either causal or not...

Then we add major topics of discussion that could be an issue in the future. In the AF we call them NFWODS (niffwads)...Non-factors worthy of discussion.

Posted by REB BEER
Laffy Yet
Member since Dec 2010
17703 posts
Posted on 3/21/22 at 9:25 am to
quote:

I know the chances of dying on a flight are astronomically low, but I really dislike flying out of fear of a crash.


Same here. I'm not really afraid of dying. But a crash like this one is what scares me... 2-3 minutes of extreme fear, screaming, and pandemonium as the plane falls almost 7 miles.

Or it could be like the scene on Airplane where the girl is a virgin and wants to have sex before she dies and all the men line up.
Posted by real turf fan
East Tennessee
Member since Dec 2016
11252 posts
Posted on 3/21/22 at 9:26 am to
Daily Mail has video showing near vertical descent

Sorry if already linked, but different angle that the dashboard briefer video pages ago.
Posted by Tigeralum2008
Yankees Fan
Member since Apr 2012
17630 posts
Posted on 3/21/22 at 9:28 am to
LOTS of images on that page



Posted by stout
Porte du Lafitte
Member since Sep 2006
179616 posts
Posted on 3/21/22 at 9:28 am to
quote:

2-3 minutes of extreme fear



To be fair, the people on this flight were likely already passed out well before impact and did not experience those last 2 or 3 minutes but I get your point.

The 737 Max crashes had to be scary experiences
This post was edited on 3/21/22 at 9:30 am
Posted by kywildcatfanone
Wildcat Country!
Member since Oct 2012
136192 posts
Posted on 3/21/22 at 9:29 am to
quote:

To be fair, the people on this flight were likely already passed out well before impact and did not experience those last 2 or 3 minutes.


I would hope so.
Posted by LSU Grad Alabama Fan
369 Cardboard Box Lane
Member since Nov 2019
13918 posts
Posted on 3/21/22 at 9:29 am to
quote:

I know the chances of dying on a flight are astronomically low, but I really dislike flying out of fear of a crash.


I drove back from Asheville through Atlanta this weekend. I almost died about 5 times. I would take flying any day of the week.
Posted by 777Tiger
Member since Mar 2011
88790 posts
Posted on 3/21/22 at 9:32 am to
quote:

To be fair, the people on this flight were likely already passed out well before impact and did not experience those last 2 or 3 minutes


I haven't looked at any details of this flight but that is not necessarily true
Posted by LSUPilot07
Member since Feb 2022
8004 posts
Posted on 3/21/22 at 9:33 am to
Only thing I can think other than pilot suicide is an aileron jammed.
Posted by stout
Porte du Lafitte
Member since Sep 2006
179616 posts
Posted on 3/21/22 at 9:33 am to
quote:

but that is not necessarily true



Maybe not the first drop but by the second drop I would figure the G force would be too great. That second drop was 20 seconds long before impact from about 10K feet looking at the charts posted.
Posted by IceTiger
Really hot place
Member since Oct 2007
26584 posts
Posted on 3/21/22 at 9:35 am to
quote:

I haven't looked at any details of this flight but that is not necessarily true


Yeah, there's a bunch of issues at play...

But it looks like they experienced some tumbling or negative G effects...it doesn’t take much in that regard.
Posted by 777Tiger
Member since Mar 2011
88790 posts
Posted on 3/21/22 at 9:38 am to
quote:

.it doesn’t take much in that regard.



a little G-ing up isn't going to knock somebody out, might be uncomfortable but it could take upwards of about 9 Gs to black a human out
Posted by IceTiger
Really hot place
Member since Oct 2007
26584 posts
Posted on 3/21/22 at 9:40 am to
quote:

That second drop was 20 seconds long before impact from about 10K feet looking at the charts posted


If it's controlled and a smooth dive, a bunch of them could stay awake under those limits. They were already at speed and the acceleration is what generates the Gs.

Obviously not the case here, no smooth dive, potential reduction in speed, then acceleration...so
Posted by IceTiger
Really hot place
Member since Oct 2007
26584 posts
Posted on 3/21/22 at 9:42 am to
quote:

a little G-ing up isn't going to knock somebody out, might be uncomfortable but it could take upwards of about 9 Gs to black a human out


Yeah, the fitness peeps do pretty good in there...Ilike you said, I'm not sure enough positive Gs we're generated, but a couple negatives would have them painting the jet green on the inside.
Posted by SirWinston
PNW
Member since Jul 2014
101311 posts
Posted on 3/21/22 at 9:43 am to
quote:

Dammit, I’m flying to Denver Thursday


Post your flight number so we can start a prayer chain for you, mate
This post was edited on 3/21/22 at 9:43 am
Posted by 777Tiger
Member since Mar 2011
88790 posts
Posted on 3/21/22 at 9:45 am to
quote:

Yeah, the fitness peeps do pretty good in there.


getting a ride in a T-38 this week, I'll have to let you know, that's a young man's game
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