Posted on 04/20/2019 2:59:37 PM PDT by Jonty30
This video explains really well.
I think Boeing is going to take a loss on this plane big time.
“SO what’s right????? PLease, enlighten all of us with your brilliance.”
The MCAS was installed to over-ride pilot inputs when the pilot is pulling too many G’s in a hard turn to prevent the plane from stalling.
It was designed to never actuate unless the pilot put the plane outside it’s normal envelope.
Failure of the sensor causes the same actions and recovery as a runaway trim fault.
Well edited and images are necessary and helpful.
Thanks. No need to watch.
Several American pilots (prior to the crashes) were complaining about these planes and their concerns were dismissed.
Boeing was actually on their way to designing a whole new plane until they got scared by Airbus competition. So they just revamped their pre-existing 737 into this destructive piece of trash.
Also their new batches of military aircraft have also been experiencing kinks.
This is the moment before the Ethiopian Flight 409 Boeing 737-800 Max crash... The people in the car are just driving along the highway & caught everything on film... Click on video below. ....
I watched the film which was very detailed but could not find it elsewhere; possibly a doctored film of another plane crash since this passenger jet crashed in a flat angle and not in the straight down dive as mentioned in the reports.
I cant get the url for this film/
Anyone else see it? - Tom
You have half your things wrong.
“I would send that video ASAP to my top analyist and ask him to get an opinion from several of the best aerospace engineers who are familiar with this situation.”
Back years ago a crackpot wrote a letter to the plant manager telling how he could rid the industry of nuclear wastes by adjusting the tilt of the earth.
Manager set one of our nuclear engineers up to corporate to ‘discuss’ the issue.
No new news there. It’s also quite biased in the way it reports the facts and which facts it chooses to report.
I don't understand why you would need an angle of attack sensor out side the cabin.
What is wrong with a level bubble fore and aft, and another parallel to the wings. Both inside the cabin? - Tom
And then crash them.
And then the media roasts the aircraft company.
Mr. Jeeves on his post #8 advised that the MCAS would only shut off for nine seconds and then re-enable.
This sounds like the same kind of thing the first Airbus aircraft software was accused of when they first rolled them out. Their software would override the natural instincts of a professional pilot.
Why not let the nose rise and cause a stall warning if it needs to. Just put a blurb in the iPad training that the higher mount of the engines may cause the nose to rise more at full thrust.
Reminds me of the old joke about the extremely high cost of designing an astronauts pen that would write in zero gravity. The cosmonauts just used a pencil.
“Yeah. . .and turning off the MCAS resulted in the third-world “pilots” discovering they can’t fly. . .we’ve flown jets without auto-pilots and AOA indicators since the Wright brothers to today.”
My neighbor is a SW Captain. He flies the Max 800. HIs take on the problem is exactly what you have written. Ditto for the unqualified turds who crashed the Asiana Airlines plane in San Francisco a few year ago. These “pilots,” ( reported to be “Ho Le Fuk, We Too Low, Bang Ding Ow, and Sum Ting Wong) with
“thousands of hours” ( sitting there being flown by the plane’s autopilot for ten hours at a time) were unable to manually fly an approach on a clear day when the ILS was inop. NEVER FLY A FOREIGN FLAG CARRIER from either Asia or the ME!
Thanks. Much obliged.
This plane could only have reached airworthiness certification with single sensor input allowing override of pilot input, is that the FAA and Boeing are utterly incompetent up and down their organizations... which I do not believe... or Folks within Boeing and the FAA used green lubricant and chronic capitalism to get this thing in the air.
There was probably a fair amount of computer simulations involved that showed it would work and they trusted the simulations too much.
A very sad thing is that the MCAS has no off switch. The only way to stop if from controlling the plane was to cut power to the electric motors that run the trim. However doing that also means that you can’t use the electric manual controls mounted on the Yoke. So the pilots were never able to gain manual control of the planes trim. Full mechanical manual control was not an option due to the forces at work.
It appears that the fatal moment came when the pilots restored power to the electric trim motors(in an attempt to regain use of the yoke controls), and the MCAS system was then able to instantly put the plane into its unrecoverable fatal dive. It had actually never stopped trying to crash the plane, as the data log shows. MCAS had no idea if it had control of the motors or not.
So they in the process of make several changes to the software. All of which should have been in place to begin with. I think those changes will help a lot, but I believe that the software will still be lacking certain types of error checking, and suicide prevention calculations. But at least it will be much more difficult for MCAS to remain on line if there are problems.
The fact is that this software was not fit to run a coke machine, let alone an airplane.
Here's the deal. Every pilot is trained in what to do for a runaway stabilizer condition. If you see the stabilizer acting strangely, you grab the stabilizer adjustment wheels and stop them from turning. You cut power, and then you manually dial the horizontal stabilizer trim back to a functional level.
What both groups of pilots did was to wait too long to try to disable the automatic controls. Had they reacted quickly, the planes would not have crashed. By the time they reacted, there was too much force on the Horizontal Stabilizer to move the trim wheels.
Bad sensors combined with not particularly good software, combined with supposedly trained pilots who did not react quickly enough to a runaway stabilizer condition.
The flat can be explained in that the pilots got control of the plane, which is what the video explained but it just wasn’t in time to avoid the crash.
Juan has the best overview.
“You don’t understand, man! A picture is worth 1000 words, and a video is worth a million words, so you’re only getting 0.00000005%, so if someone on Youtube says the Martians are .... wait, what were we talking about?”
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