Search found 1710 matches

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by kalvado
Thu May 23, 2019 4:32 pm
Forum: Civil Aviation
Topic: FAA Inspectors Accusing Agency of Negligence
Replies: 37
Views: 3585

Re: FAA Inspectors Accusing Agency of Negligence

My impression is that overly strict safety requirements are another layer of redundancy: if there are some violations, they would probably still be contained. Just don't push those limits too hard. The multiple billion dollar question is for you to define is what is "too hard". To the NTS...

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by kalvado
Thu May 23, 2019 3:50 pm
Forum: Civil Aviation
Topic: FAA Inspectors Accusing Agency of Negligence
Replies: 37
Views: 3585

Re: FAA Inspectors Accusing Agency of Negligence

My impression is that overly strict safety requirements are another layer of redundancy: if there are some violations, they would probably still be contained. Just don't push those limits too hard.

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by kalvado
Thu May 23, 2019 3:06 pm
Forum: Civil Aviation
Topic: UA's Munoz: Will be on first 737 MAX flight, willing to change flights for customers
Replies: 116
Views: 16103

Re: UA's Munoz: Will be on first 737 MAX flight, willing to change flights for customers

Well you know its just a matter of time before another MAX has an incident/accident of some sort, but totally unrelated to MCAS. The real test is to see how the traveling public reacts to that as the media will be all over it with their typical misinformation and bombastic headlines. Real test is w...

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by kalvado
Thu May 23, 2019 2:35 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I don't believe that anybody is happy about any aspect of the MAX grounding. It is clear, that on-topic posts in this thread predominantly won't paint a nice picture of Boeing. That is inevitable. Similar like the A380 production stop thread about Airbus. This thread here by nature is a hard topic ...

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by kalvado
Thu May 23, 2019 2:33 pm
Forum: Civil Aviation
Topic: UA's Munoz: Will be on first 737 MAX flight, willing to change flights for customers
Replies: 116
Views: 16103

Re: UA's Munoz: Will be on first 737 MAX flight, willing to change flights for customers

The 737 - in all its forms - has proven to be around for many, many, many, many years (including those with rudder issues). And as far as sales goes...thousands to come. Not arguing that it's not proven (although the MAX isn't - yet), but it's not the safest plane in the sky. That honour goes to th...

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by kalvado
Wed May 22, 2019 9:00 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Because none of the simulations I've seen posted have attempted to simulate recovery starting from the beginning of the MCAS runaway. If you know of one, then I'd like you to point me to it since you are using them as part of your argument that they "just managed to avoid crash." That is ...

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by kalvado
Wed May 22, 2019 8:27 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I agree with your thought process. However, there would be a disconnect between it being an acceptable risk on the NG and the NNC being a memory item. If the failure rate is on the order of a wing falling off, why make it a memory item? Just a guess: 737 history. At some point in the past the runaw...

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by kalvado
Wed May 22, 2019 3:54 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Sine we now know that the Simulator significantly under performs in terms of the forces on the trim wheel, I think all bets are off regarding the accuracy of any of the simulations and their results either way. They will need to be run again with the new setup before any realism can be ascribed. Wo...

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by kalvado
Wed May 22, 2019 3:07 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

On the training front, you are missing the big picture. In my opinion, the training issues that exist are not specific to the 737MAX. We can't know for sure until the final reports on both crashes, but I do not believe, based on available evidence, that either crew would have recovered from a runaw...

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by kalvado
Wed May 22, 2019 1:56 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

You are thinking of the AD and not what was actually in the FCOM that the pilots rely on which has return the trim to neutral in the first paragraph - not much ambiguity in that. Thanks for proving my point. There shouldn't be twenty different versions describing same procedure. Hire qualified docu...

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by kalvado
Wed May 22, 2019 1:50 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Umm - they published procedures that if they had been followed we would not be having this discussion. Too bad Boeing technical writers couldn't put together an unambiguous text without internal contradictions. Definitely a training issue, as with most Boeing workforce. And too bad distinction betw...

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by kalvado
Wed May 22, 2019 12:58 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

OK then, I'll take it at face value that your newly voiced sympathy for accident victims is more genuine than your emnity for so many things you've repeated so many times on this forum. Yes victims first of Boeing's negligent design and than the callous disregard in taking no action after the Lion ...

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by kalvado
Tue May 21, 2019 9:22 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

On a different tack, without discussing the minutiae of MCAS design and implementation - or any other particular system, will the scrutiny of the processes involved in MAX certification result in further elements of the 737 MAX being subject to investigation? The logic would be that if MCAS was dee...

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by kalvado
Tue May 21, 2019 8:55 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

But what we see on the other hand is a large majority of posts by Boeing apologists who try to distribute blame away from Boeing. Well, that's a mighty uncharitable characterization, one that in my mind nullifies the rest of your post. For the record, I do not "try to distribute blame away fro...

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by kalvado
Tue May 21, 2019 7:55 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

This can be the thread where you Boeing bash all day long and we will make another one about training? Would that make you happy? I don't believe that anybody is happy about any aspect of the MAX grounding. It is clear, that on-topic posts in this thread predominantly won't paint a nice picture of ...

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by kalvado
Tue May 21, 2019 6:58 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

My apologies if this has already been posted, but there is now speculation that bird strikes to the MCAS sensor might have caused the crash: https://www.theguardian.com/business/2019/may/21/boeing-737-max-crash-bird-collision-ethiopian-airlines ccording to the Wall Street Journal, US aviation autho...

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by kalvado
Tue May 21, 2019 6:05 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

My apologies if this has already been posted, but there is now speculation that bird strikes to the MCAS sensor might have caused the crash: https://www.theguardian.com/business/2019/may/21/boeing-737-max-crash-bird-collision-ethiopian-airlines ccording to the Wall Street Journal, US aviation autho...

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by kalvado
Tue May 21, 2019 6:02 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Well then you better condemn the A320 as well. It's fallback system is a Manual trim wheel as well. If needed in an Emergency in an out of trim condition at Vmo or over I would have to guess that it would be pretty hard to turn and the Elevators would suffer from blowback as well. It's amazing that...

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by kalvado
Tue May 21, 2019 5:33 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

On a different tack, without discussing the minutiae of MCAS design and implementation - or any other particular system, will the scrutiny of the processes involved in MAX certification result in further elements of the 737 MAX being subject to investigation? The logic would be that if MCAS was dee...

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by kalvado
Tue May 21, 2019 5:25 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Runaway Stabilizer and blowback effect apply to all commerical jets - they are not 737 Unique and would be covered by basic training. I think someone showed an excerpt from an actual 737 training manual or document a week or two ago and Boeing does mention that you may have to relieve pressure on t...

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by kalvado
Tue May 21, 2019 4:56 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

After the EAD, the world knew about MCAS and Boeing did not prevent any airline operating the MAX from training for a Stabilizer Runaway. Yet ET 302 still crashed. As details of runaway stabilizer - blowback effect, roller coaster trim procedure - were not communicated to airlines (probably because...

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by kalvado
Tue May 21, 2019 3:10 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

So you want really insist on Boeing telling everybody about MCAS and allowing training for that new dangerous situation, would not have prevented the crashes? Really? After the EAD, the world knew about MCAS and Boeing did not prevent any airline operating the MAX from training for a Stabilizer Run...

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by kalvado
Mon May 20, 2019 8:27 pm
Forum: Civil Aviation
Topic: B 797 - One pilot cockpit?
Replies: 177
Views: 17536

Re: B 797 - One pilot cockpit?

Can be something designed with 2 pilot seats and provisions for eventual downgrade for 1, e.g. remote control built in but not activated until approved. Zero-pilot flight may have reduced functionality, e.g. divert to nearest airport only, with ATC giving priority pass to a troubled aircraft. Pilot ...

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by kalvado
Mon May 20, 2019 6:17 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Avoiding a stall in banking turn, in turbulence, close to MTOW, with aft CoG, in a high work load environment, may be a bit more complicated. Add to that picture a lack of (natural) pitch stability margin (like the MAX), things might get out of your hands pretty quickly. I tend to believe that he F...

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by kalvado
Mon May 20, 2019 2:11 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Simulations have shown the ET coud not have recovered, so to say they should have been able to recover is based largely just on wishful thinking. Especially given the pilots were just following B procedures. Training can/should be improved, but the most important steps to achieve this is B has to p...

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by kalvado
Mon May 20, 2019 1:36 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

You could also evolve your mindset. I do not think it is unreasonable to expect that pilots can perform a NNC, especially one that is a memory item. It shouldn't matter that there are other alerts and confusion. They should be trained to handle non-normal situations (hence the name of the checklist...

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by kalvado
Mon May 20, 2019 2:43 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Ah yes when a plane is trying to pitch itself into the ground and kill you the first thing you will think about is running the airspeed unreliable checklist. On another note, wasn't there a discussion about the 737 MAXs trim wheel being more difficult to use than the NG, and that's why they kept el...

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by kalvado
Mon May 20, 2019 1:02 am
Forum: Civil Aviation
Topic: Amazon to open a air hub in Lakeland Florida
Replies: 32
Views: 4565

Re: Amazon to open a air hub in Lakeland Florida

Put me in the doubter category for this tidbit. Lakeland has practically zero infrastructure IIRC and Florida isn't a great place to put a cargo hub since it is in the bottom right corner of the country. Amazon has done weirder things though Florida is a great place for a hub if picking up a lot of...

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by kalvado
Mon May 20, 2019 12:54 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I have no idea about the Me-262, but you a “set of sensors designed to WW II standards” and that isn’t correct by a long way. post-WWII development, in particular spaceflight, brought up new level of redundancy - single failure should not cause a catastrophic outcome. It became especially important...

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by kalvado
Mon May 20, 2019 12:08 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

What do you think he should have been doing for the minute and 15 seconds (until MCAS became active) while stick shaker was going off and the IAS DISAGREE alert was displayed at the bottom of his speed tape? I guess he could of gone thru his stall recovery procedures but didn't do that either. Inst...

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by kalvado
Mon May 20, 2019 12:02 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

It's lousy engineering and safety practice to EXPECT pilots to successfully counteract emergency which is caused by a single point failure resulting in a software fix for a mechanical issue going haywire during a heavy workload portion of flight. Hate to break the news but, we do that in many scena...

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by kalvado
Sun May 19, 2019 11:35 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I'd like to add one more: 7) The crew of ET302 failed to run the AIRSPEED UNRELIABLE NNC. Ah yes when a plane is trying to pitch itself into the ground and kill you the first thing you will think about is running the airspeed unreliable checklist. On another note, wasn't there a discussion about th...

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by kalvado
Sat May 18, 2019 5:51 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Which brings the question how accurate are published sim videos, e.g. mentourpilot one;and if limitations of trim wheel were understood previously but that knowledge dissipated. Mere fact that trim wheel forces can be simulated at all in the sim and drivers are powerful enough to exercise high forc...

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by kalvado
Sat May 18, 2019 11:14 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Some more bad news: 737 MAX simulators don't properly simulate all the force needed to turn the trim wheels.... https://www.nytimes.com/2019/05/17/business/boeing-737-max-simulators.html This is not a surprise, of course... Simulators are designed to reproduce expected behaviour, not unplanned beha...

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by kalvado
Fri May 17, 2019 5:38 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Unfortunately, whether we like it or not, pilots are there to save the day when automation goes wrong. True. We all know airlines will get rid of pilots as soon as they can find a way to convince themselves they are not needed. Given that this hasn't happened yet, and given the automation can handl...

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by kalvado
Thu May 16, 2019 8:14 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Boeing says it has completed the development of updated software for the 737 Max https://www.cnbc.com/2019/05/16/boeing-says-it-has-completed-the-development-of-updated-software-for-the-737-max.html?__source=twitter%7Cmain Since Boeing themselves said that a fix was in the works already in november...

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by kalvado
Thu May 16, 2019 4:38 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

This has always been the lament of the new pilot. I know things are different in other parts of the world, but in North America, those that want it bad enough, find a way. When I was starting out, we became flight instructors , charter or freight pilots, towed banners, or did tours. I even know one...

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by kalvado
Thu May 16, 2019 12:41 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Aviation737 wrote:
Does anyone know when the grounding will be lifted?

Not even Boeing themselves. different dates are thrown around, June, July, August... time will tell.

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by kalvado
Thu May 16, 2019 11:43 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

This has always been the lament of the new pilot. I know things are different in other parts of the world, but in North America, those that want it bad enough, find a way. When I was starting out, we became flight instructors , charter or freight pilots, towed banners, or did tours. I even know one...

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by kalvado
Wed May 15, 2019 10:16 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I guess I don't share the fear that many posters have of the 737 Max. Happy to fly on it again whenever the next opportunity arises. Like over 50% of the people on this forum, I am not an expert, but with the software, hardware, and training changes, it will all be fine. You should read Roger's com...

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by kalvado
Wed May 15, 2019 4:35 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Because of the higher mounting of the MAX engines the Pitch up effect due to power should be less than the NG. Can you quote a source that agree with your claim ? Because any document Is have read so far are pointing to an INCREASE of the pitch up moment on the 737-8/9 MAX. My understanding is that...

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by kalvado
Wed May 15, 2019 3:54 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Seems we are forgetting that the MCAS in both crashes was preceded by some failure in the AOA sensors, other than talk about single sensor, one can get the impression from all the comments that MCAS version any kicks in without any trigger event. One can assume that since there is very little talk ...

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by kalvado
Wed May 15, 2019 3:45 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I will reserve judgement until the final reports are out, but it appears he isn't wrong. Why the Lion air crew didn't jump on the "RUNAWAY STABILIZER' NNC is an issue. On the 737, it's the only proper checklist to address any uncommanded and/or inappropriate movement of the stabilizer. If they...

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by kalvado
Wed May 15, 2019 2:04 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I think it's pretty clear that any airplane that pitches up so significantly when power is applied that it needs a computer to avoid a stall because it doesn't fly like other 737s sounds like a serious issue. The situation that triggers MCAS is not typically triggered by the application of power. O...

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by kalvado
Wed May 15, 2019 2:00 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

So far, certification review is the words I heard - but I wonder if there is anything specific they're looking at. So they are just going to do certification review in the hope that they will find something to review? Should be easy, there will always be something that was overlooked or not stated ...

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by kalvado
Wed May 15, 2019 12:46 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Knowing what we know at this point you won't see me on a MAX anytime soon. I don't even think that is an issue as I doubt we see then return to service in 2019. Interesting point of view. Here's what Morgan Stanley's analyst recently wrote: The MAX certification is progressing with the May 23 FAA e...

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by kalvado
Tue May 14, 2019 9:17 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

[ I suspect that there is at least one other explanation. The MCAS FMEA (Failure Modes & Effects Analysis) included probably a historic AoA signal failure rate that was on the order of 1 X 10-6 and postulated that only 1 crew in 1000 wouldn't be able to deal with the potential Stab Runaway. The...

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by kalvado
Tue May 14, 2019 9:02 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Remember, there was more than just a trim issue. There is also an unreliable airspeed and stick shaker. How do you know trim is the root cause? There were mentions that high lift malfunction on the wing can cause the shaker; so maybe that is the root cause? or something else? IMHO biggest design fl...

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by kalvado
Tue May 14, 2019 8:20 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

And doesn't make any sense, especially because the FAA doesn't appear to require any sim training for MCAS 2.0 -- see discussion going on around near the end of previous page. There is no good way to explain away the botched MCAS 1.0. Either: - Boeing engineers did not interpret the regulations pro...

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by kalvado
Tue May 14, 2019 8:02 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3082
Views: 306003

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Of course, that was a typo, it was 1.6m. I am happy and a bit relieved to hear this. I instantly asked if great-grandfathering, like 737 are becoming a problem due to societal changes. In 1960s, employers had total discretion on whom to hire. Now, much less so - and this is very significant societa...

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