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by speedbored
Thu Dec 19, 2019 5:42 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Human's just aren't good enough or fast enough to handle complex systems especially when they do unexpected things Humans are far far better at dealing with systems "when they do unexpected things" than any autonomous system can be. Until we have true artificial intelligence, systems can ...

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by speedbored
Thu Dec 19, 2019 3:45 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Human's just aren't good enough or fast enough to handle complex systems especially when they do unexpected things Humans are far far better at dealing with systems "when they do unexpected things" than any autonomous system can be. Until we have true artificial intelligence, systems can ...

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by speedbored
Wed Dec 18, 2019 1:31 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

I still wonder how the things would have played out if the accidents happened in the United States, with almost exclusively U.S. passengers killed and U.S. pilots being branded as "second rate"... wait, U.S. pilots are always first rate... I suspect that the first difference would have be...

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by speedbored
Wed Dec 18, 2019 1:27 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

I will need you to educate me I'm afraid. I genuinely have no idea what the answer is going to be? How many people have died in 737 size plus commercial plane accidents (I use that size as its the minimum size of plane I travel on) as a result of turbine disc failure in the last 5 years? And if and...

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by speedbored
Wed Dec 18, 2019 1:26 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

I will need you to educate me I'm afraid. I genuinely have no idea what the answer is going to be? How many people have died in 737 size plus commercial plane accidents (I use that size as its the minimum size of plane I travel on) as a result of turbine disc failure in the last 5 years? And if and...

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by speedbored
Wed Dec 18, 2019 1:22 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Please tell me what design faults normal 737 have that I shouldn't trust? And if they are recognised faults what has been made different to correct them on the Max whilst making the other changes to the plane What design faults should I be aware of and what accidents have they caused that could hav...

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by speedbored
Wed Dec 18, 2019 1:13 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

I will need you to educate me I'm afraid. I genuinely have no idea what the answer is going to be? How many people have died in 737 size plus commercial plane accidents (I use that size as its the minimum size of plane I travel on) as a result of turbine disc failure in the last 5 years? And if and...

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by speedbored
Wed Dec 18, 2019 1:01 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Interested wrote:
It's cheap enough to fly already. We didn't need Max planes for that.

Perhaps. But it's only cheap enough already because people have accepted the cost/benefit compromise are are flying around on aircraft with design faults.

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by speedbored
Wed Dec 18, 2019 12:58 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

There will always have to be a cost/benefit compromise when it comes to all of this - if we want totally safe aircraft then aviation will cease. Totally disagree on that Every person who has ever paid to fly has accepted that compromise. Based on the level of safety they find acceptable I give up. ...

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by speedbored
Wed Dec 18, 2019 12:49 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Are you suggesting that paying more cash for a ticket is safer? Absolutely bollocks. Ryanair sells very cheap tickets and has an excellent safety record. One of the safest, if not the safest, airlines worldwide - well, it's the safest one considering the amount of flights and transported pax. Fligh...

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by speedbored
Wed Dec 18, 2019 12:31 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

There will always have to be a cost/benefit compromise when it comes to all of this - if we want totally safe aircraft then aviation will cease. Totally disagree on that Customers would put safety on planes ahead of cost Corporate greed has led to this And given the chance to turn the clock back an...

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by speedbored
Wed Dec 18, 2019 12:28 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

This isn't a new aircraft? It's a grandfathered aircraft? The two are not mutually exclusive. Isn't grandfathering designed to ensure we don't face any serious issues that can fall through the cracks as you say? No. Grandfathering is about avoiding having to comply with new regulations. Would this ...

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by speedbored
Wed Dec 18, 2019 12:19 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Shouldn't every new model at least maintain the safety status quo, if not improve on it? Yes, but compared to what? And over what period of time? Given the complexity of aircraft these days, expecting a new aircraft to be as safe as it can be right from EIS is just wishful thinking. Even with the b...

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by speedbored
Wed Dec 18, 2019 10:51 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

The point is that many other aircraft with very significantly higher fatal accident rates than the 737NG are deemed acceptable, so why can the MAX not be? Shouldn't every new model at least maintain the safety status quo, if not improve on it? Yes, but compared to what? And over what period of time...

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by speedbored
Wed Dec 18, 2019 10:33 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

What is an acceptable number of Max crashes per year caused partly at least by design of the plane and/or inability of pilots to be able to fly the plane as safely as they can fly other commercial planes in operation today or by mechanical error If you're asking me it depends whether I'm on the fli...

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by speedbored
Wed Dec 18, 2019 10:31 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Even if the MAX is 33% "less safe" than the NG, it would still only equal the A320 fatal accident rate. i dont not want to open up a off topic conversation here but statistics are a important part of the whole 737MAX discussion I can not finde numbers like this if you go to http://www.air...

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by speedbored
Wed Dec 18, 2019 9:30 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Anyway yes my point is if the Max can't be as safe or safer than the NG - the plane fails I don't see why. Even if the MAX is 33% "less safe" than the NG, it would still only equal the A320 fatal accident rate. Even at 300% "less safe", it would still have a lower fatal accident...

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by speedbored
Wed Dec 18, 2019 9:24 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Interested wrote:
To increase you have to multiply by 1.0001?
You cant start with 0.545 crashes and increase it and end up with less crashes?
Lol

No, to increase by 0.0001%, you multiply by 1.000001.
And I didn't "end up with less crashes". 0.54750005475 is MORE than 0.5475

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by speedbored
Wed Dec 18, 2019 9:19 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

How can the plane be as safe as NG? It will need to be fixed to be pretty close to "as safe as" the NG otherwise it will not get certified. My point is that your numbers are way off the mark. Even if the MAX hit 10 million flights a year, and was 50% more accident prone than the NG, it wo...

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by speedbored
Wed Dec 18, 2019 9:10 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

so you think a kinda calculatable "additional" crash, compared to a far older but similar product every two years is acceptable for a transport category aircraft in 2020 ? Not at all. The figures presented by Interested (which appear to be mostly guesswork) would show an increase of 0.000...

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by speedbored
Wed Dec 18, 2019 8:58 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

Thanks for the correction So with your figures bearing in mind I picked a random extra risk associated with the new design Then just 0.0001 percent extra risk of crashing would produce 5.5 crashes per year of Max planes with 5,000 in operation? Would you agree? No. Unless each of those aircraft was...

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by speedbored
Wed Dec 18, 2019 8:50 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

So your suggested 0.0001% increase would result in 0.55 fatal accidents per year for the MAX. Negligible difference compared with the NG. so you think a kinda calculatable "additional" crash, compared to a far older but similar product every two years is acceptable for a transport categor...

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by speedbored
Wed Dec 18, 2019 8:03 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 749463

Re: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended

You would think a plane just 0.0001 percent more likely to crash than NG each time it flies due to extra potential to stall or any other safety design flaws would be acceptable wouldn't you? Based on 25k flights per day x 365 days of the year if the Max was just 0.00001 percent more likely to crash...

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by speedbored
Mon May 20, 2019 9:19 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 420071

Re: Boeing 737MAX Grounded Worldwide Q2 2019

The exact quote of balancing the forces is in the FCOM I think. However, the NNC says to use the main electric trim to control the pitch attitude in step 2. No, it does not. If the pilots could adequately control "airplane pitch" with just the control column, there would be no need to eve...

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by speedbored
Mon May 20, 2019 2:35 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 420071

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Please do show us exactly where in the NNC it tells pilots to "balance the control column forces". 2 Autopilot (if engaged) . . . . . . . . . . . . .Disengage Do not re-engage the autopilot. Control airplane pitch attitude manually with control column and main electric trim as needed. The...

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by speedbored
Mon May 20, 2019 11:29 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 420071

Re: Boeing 737MAX Grounded Worldwide Q2 2019

planecane wrote:
zoom321 wrote:
planecane wrote:
The ET crew did not follow the runaway stabilizer NNC exactly because they cut off electric trim before they balanced the control column forces.

Please do show us exactly where in the NNC it tells pilots to "balance the control column forces".

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by speedbored
Mon Apr 15, 2019 4:59 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

The 737 MAX will fly when it is safe. With a political delay. Why would you expect a political delay? Seems to me that any advantage that could possibly be gained from this grounding by Boeing's competitors would be far outweighed by the damage caused to airlines from having parts of their fleets g...

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by speedbored
Sat Apr 13, 2019 8:39 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Do I understand MentourPilot correctly? At 2:20 he asks to trim the nose further down? And isn't that what the FO does? Exactly what does this prove - that if you allow the trim (or cause the trim) to move nose down there could be a point where you can't save the plane? I believe that they were &qu...

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by speedbored
Sat Apr 13, 2019 8:26 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

macc wrote:
I believe Boeing will be very careful with the fix. AS others have mentioned, the MCAS seems only half of the trouble. The AoA sensor, the integration to the ADIRU might provide some more headache as well.

Wouldn't surprise me if they also get told to do some work around the manual trim wheel.

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by speedbored
Sat Apr 13, 2019 8:16 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Do I understand MentourPilot correctly? At 2:20 he asks to trim the nose further down? And isn't that what the FO does? Exactly what does this prove - that if you allow the trim (or cause the trim) to move nose down there could be a point where you can't save the plane? I believe that they were &qu...

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by speedbored
Sat Apr 13, 2019 6:45 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: Southwest pilots question all-Boeing fleet

Seems like Tajer isn't even sure if the type will fly again. I don't think we can make conclusions from his somewhat hyperbolic statement. I think if you ask the 737 pilot community at large they are quite confident the 737 will fly again, but of course, nothing is a certainty in life. I'd estimate...

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by speedbored
Sat Apr 13, 2019 6:27 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

The AD clearly states that: 1) Once the "STAB TRIM" cutoff switches are turned OFF, they are to remain OFF for the remainder of the flight. 2) Electrical stabilizer trim is to be used prior to using the "STAB TRIM" cutoff switches. This is not a footnote but is contained in the ...

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by speedbored
Sat Apr 13, 2019 3:11 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Except that: 1) The AD was not followed as the "STAB TRIM" switches were turned back on. The AD says clearly to turn them off and leave them off. The AD also says to use the manual trim wheel. At the point that they discovered that that was not possible, they probably abandoned the checkl...

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by speedbored
Sat Apr 13, 2019 2:10 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

No, I did not get it wrong. I am talking about the chance of any one sensor failing; it is an average. You are talking about the chance of one or more sensors failing. Not the same thing. Does not matter what you are talking about. Adding probabilities of independent events is always wrong. Not whe...

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by speedbored
Sat Apr 13, 2019 1:47 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

Yes, with 5 sensors, each of which has a 20% failure rate, the chance of any one of the sensors failing is 100%. That does not mean that you will get a failure every time, because sometimes you will get multiple failures and sometimes you will get zero failures. You get it wrong. Sorry. 100% probab...

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by speedbored
Sat Apr 13, 2019 1:21 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

That rubbish about the force needed to move the horizontal stabilizer is astonishing. Astonishing, yes. Rubbish, definitely not; it has been confirmed by multiple independent simulator tests, like the one in the video. The manual trim wheel becomes unusable by most pilots at high speeds with signif...

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by speedbored
Sat Apr 13, 2019 1:14 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

Here's another way to look at it: Let's say the probability of 1 sensor failing is 20%. Let's put 5 sensors on the plane. the probability of any one of a group failing is always exactly = p(one sensor failing) * n(sensors) = 20% * 5 = 100% failure? You have to multiply 0.2. 0.2 * 0.2 and so on. Wha...

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by speedbored
Sat Apr 13, 2019 1:02 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

I have the feeling the video is not serious. Why? Why? Because none of the two actors looks towards the instruments not toward the handle. A normal human being working in a cockpit would have been looking at what they are doing instead of looking elsewhere.. They literally spend the entire time loo...

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by speedbored
Sat Apr 13, 2019 9:58 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

≠ p(one sensor failing) * n(sensors) = 0.2 x 2 = 0.40 True but you are comparing "at least one of" to "any one of". Not the same. Please understand that it is significantly different if you can assume the failed sensor is serviced after the flight on which it is not used. Cyclin...

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by speedbored
Sat Apr 13, 2019 9:43 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

The probability of at least 1 of 2 sensors failing is... indeed approximately double the probability of 1 sensor failing. As I posted previously we have an estimate of sensor MTBF 20000hrs. This equates to a failure rate of 5E-5 per hour. Both sensors have the same predicted failure rate, so if you...

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by speedbored
Sat Apr 13, 2019 9:39 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

If you have more than one sensor, the probability of any individual one failing doesn't change, so the probability of any one of a group failing is always exactly = p(one sensor failing) * n(sensors) No "approximately" about it. Let's say a sensor has a failure rate of 20%. Probability of...

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by speedbored
Sat Apr 13, 2019 9:30 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

The probability of at least 1 of 2 sensors failing is... indeed approximately double the probability of 1 sensor failing. As I posted previously we have an estimate of sensor MTBF 20000hrs. This equates to a failure rate of 5E-5 per hour. Both sensors have the same predicted failure rate, so if you...

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by speedbored
Sat Apr 13, 2019 9:13 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

The probability of one of two separate sensor failing is double of one sensor failing. So if you fly a trip with the broken sensor, but use the unbroken sensor, you will hit the broken sensor on the next trip. If you have no AoA disagree you have no warning that one sensor has failed. I wasn't conv...

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by speedbored
Sat Apr 13, 2019 9:03 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

If you switch them OFF it is then to fly the aircraft manually. And manual means the manual trim wheel (and the handle) without the help of any electrical power. That's my interpretation anyway. So I am totally confused by the report. I can't understand why when it's been pointed out dozens of time...

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by speedbored
Sat Apr 13, 2019 6:47 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

Sorry, but I see far more similarities than you obviously do. You seem to have already made up your mind that Boeing is solely to blame. I'm still waiting for the final report. While it is true that there are some similarities, there are also some big differences: In the case of the A330, the fault...

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by speedbored
Thu Apr 11, 2019 1:04 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

... Not least to confirm it's really all down to those inexperienced, poorly trained, 3rd World pilots. Boeing and FAA decided to include "Denzel Washington Flip" in both MAX simulator training and FCOM to overcome this problem. For anyone who might still be of the opinion that low hours ...

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by speedbored
Thu Apr 11, 2019 12:15 pm
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

One would hope that the fact that the captain's AoA display had gone all blue while the FO's was still ~40% brown would also be a clue. The display with the blue and brown is called attitude indicator (aka artificial horizon). It displays pitch and bank. However, this is not an AoA indicator! Yes, ...

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by speedbored
Thu Apr 11, 2019 10:53 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

I am not sure if this was explained in previous posts. Hope someone can explain: At 05:40:35, the First-Officer called out “stab trim cut-out” two times. Captain agreed and First-Officer confirmed stab trim cut-out From 05:40:42 to 05:43:11 (about two and a half minutes), the stabilizer position gr...

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by speedbored
Thu Apr 11, 2019 5:43 am
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 757774

Re: B737MAX Grounded Worldwide

It is also known (whether the pilots actually tried or not) that manually trimming nose up while holding back pressure to counteract far out of trim nose down is nearly impossible and that training and documentation on the "roller coaster" procedure from the 737-100 should be reintroduced...

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by speedbored
Thu Apr 11, 2019 5:35 am
Forum: Civil Aviation
Topic: Ethiopian Airlines 737MAX crashes enroute to Nairobi Q1 2019
Replies: 5479
Views: 753745

Re: Ethiopian Airlines 737MAX crashes enroute to Nairobi

And maximum thrust was their fault, as it let to an overspeed situation and that made the plane unable to recover. The very minor amount of overspeed (until the final dive) really shouldn't have been enough to render the aircraft uncontrollable. In any case, there are multiple reports out there now...

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