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by hivue
Mon Aug 19, 2019 10:16 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Okay… about pilot training, here’s my question to all poster here. Was it reasonable for Boeing to design MCAS v1 as it did, with the justification that the pilots should know how to save the plane? " Well, it seemed like a good idea at the time ." anon. Yes, it was reasonable. The proble...

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by hivue
Fri Aug 16, 2019 9:29 pm
Forum: Civil Aviation
Topic: Ural Airlines A321 VQ-BOZ 15 august 2019 Moscow emergency landing
Replies: 184
Views: 27800

Re: Ural Airlines A321 VQ-BOZ 15 august 2019 Moscow emergency landing

tu204 wrote:
(with a buzz)


Heard an ex-A320 pilot on the web speculate that it was the RAT.

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by hivue
Fri Aug 09, 2019 12:21 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

kalvado wrote:
MAX demonstrated a worst fear of FBW approach


The MAX is not a FBW airplane. If it were, we would not be having this discussion.

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by hivue
Thu Aug 08, 2019 6:50 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

I almost thought I could fly the thing. I am good at turning nobs. You just about could. Engage LNAV and VNAV right after gear up, get no curve balls thrown at you by ATC en route, no unpredicted weather, an airplane and a runway equipped for auto-land, someone to point to the right knobs and just ...

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by hivue
Tue Aug 06, 2019 6:35 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

It is truly remarkable that there is zero official info coming from Boeing on that new issue from June. The only thing that came from Boeing is that "new issue has been identified by FAA" and "it will be fixed in September". Why can't they elaborate just a little bit so that the...

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by hivue
Mon Aug 05, 2019 1:31 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

I still don't quite understand the reason for the "stick lightening," though I believe the issue has to do with an FAR specifying that in certain situations stick forces must increase with increasing airspeed, something like 1 lb per 6 kts increase or something like that. The MAX apparent...

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by hivue
Fri Aug 02, 2019 2:10 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

par13del wrote:
Ever thought we could be grateful the 737 was not full FBW, this would be it, imagine rewriting that much code for deployment and testing in 3 months.


The 737 isn't even a little bit FBW.

And if the MAX was FBW we wouldn't even be having this discussion.

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by hivue
Tue Jul 30, 2019 8:26 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

par13del wrote:
planecane wrote:
they also have a requirement to ensure that failures are contained right?


I doubt if there is any regulation which requires that. In many cases it would be physically impossible to contain a turbine rotor that has come apart.

See post 1148 above.

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by hivue
Tue Jul 30, 2019 5:55 pm
Forum: Civil Aviation
Topic: WN Practices Sustainable?
Replies: 148
Views: 14557

Re: WN Practices Sustainable?

WN Practices Sustainable?

Their practice of flying only 737s may not be -- certainly not in the long run.

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by hivue
Mon Jul 29, 2019 9:10 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

NYT suggests that Boeing management is pressuring engineers to keep costs low to keep the stock price high, presumably because management bonuses are often stock grants or options. Management remuneration (not just bonuses) often is heavily influenced by stock price period. If the (major, at any ra...

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by hivue
Thu Jul 25, 2019 8:51 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

So building MAX simulators is also on hold by the FAA? There is no "building" of anything that is "on hold" by the FAA. MAXs are still being built at a rate of 40 or so per month (at least until Q4). Sim builders can build as many MAX sims as they want. Of course, they'll have t...

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by hivue
Fri Jul 19, 2019 4:10 pm
Forum: Civil Aviation
Topic: Unverified: Fiji Airways skips 737 MAX quality inspections.
Replies: 118
Views: 19050

Re: Unverified: Fiji Airways skips 737 MAX quality inspections.

blueglacier737 wrote:
I'm a mechanic on the 737 MAX final assembly in Renton, Washington.


Are "mechanics" used on the FAL? Is that the official term for aircraft assemblers? If not, what would they be using their "mechanic" skills to fix? The tooling?

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by hivue
Wed Jul 17, 2019 6:31 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

For those predicting financial doom for Boeing or wondering why its stock price has held up as well as it has -- https://www.barrons.com/articles/how-much-boeing-stock-worth-if-737-max-never-flies-again-51563305527?siteid=yhoof2&yptr=yahoo EDIT: This link may work better -- https://finance.yahoo...

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by hivue
Tue Jul 16, 2019 10:27 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Until the final repot on the ET crash, I won't categorize it as "bad luck." You've missed my point entirely. The two crashes definitely were not due to "bad luck." The bad luck enters due to the two crashes occurring so close to each other and under virtually identical circumsta...

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by hivue
Tue Jul 16, 2019 9:54 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

I totally agree, my point is that the pain of the Max grounding is bad, but imagine if it was 1,500 planes or 20% of the current in service fleet, that would be a disaster for aviation. not shure if they would have grounded it then .... Right. Hours/cycles would be a better measure, but these two c...

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by hivue
Mon Jul 15, 2019 7:27 pm
Forum: Civil Aviation
Topic: American Airlines extends 737 Max flight cancellations through November 2019
Replies: 58
Views: 8818

Re: American Airlines extends 737 Max flight cancellations through November 2019

The thread title is incorrect. It's through October... plus a couple of days in November.

The situation is bad enough without any exaggeration.

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by hivue
Thu Jul 11, 2019 10:08 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

The cost of the eventual fix and the compensation payments must have wiped out any profit Boeing could hope to make on these birds. I'm going to go waaaaaaaaay out on a limb ( :D ) and predict that the MAX eventually will end up just as much a cash cow for Boeing as its ancestors have been. Boeing ...

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by hivue
Wed Jul 10, 2019 5:16 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Boeing should add a safety mechanism to the 737 MAX that will disable MCAS if the plane is descending too quickly in order to avoid another tragedy similar to JT 610 or ET 302. This safety mechanism should be designed at safety level A (catastrophic failure condition), and this safety mechanism sho...

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by hivue
Tue Jul 09, 2019 6:12 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Without reading through 8 million posts, how hard would it be for Boeing to convert the already built or nearly built MAXs to NGs should the MAX program be cancelled or severely postponed?... then market them to airlines with existing MAX orders at further discounts. Boeing likely would end up with...

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by hivue
Thu Jul 04, 2019 5:31 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

I'm shocked that they are still building 40 frames a month in Renton. It shows loyalty to their workers but at some point they'll have to stop. Loyalty to their workers likely has little to do with it. Boeing's stock has remained relatively stable (give the circumstances) but, per what I've heard o...

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by hivue
Wed Jul 03, 2019 9:55 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

I don't know. To me this argument sounds like "the purpose of a wall switch is to provide current to the light bulb, not to turn the light on". That argument would be valid except for the fact there are real stall prevention systems -- systems that actually prevent the pilot from stalling...

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by hivue
Wed Jul 03, 2019 6:36 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

It appears that some people still believe Boeing without hard data at hand. I (along with a number of others) have been making the "MCAS is not stall prevention" point often in these threads. But if I'm wrong and MCAS is a Boeing alpha prot/alph floor equivalent, minus the FBW, I will gen...

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by hivue
Wed Jul 03, 2019 5:56 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

If you hit a strong microburst in a bad weather approach you might be toast without MACS. Imagine you are on approach, before flaps are down at around 5000ft agl and you are hit by a strong microburst. Autopilot is immediately off and when you realized what happened you are 3500ft agl descending. Y...

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by hivue
Tue Jul 02, 2019 8:28 pm
Forum: Civil Aviation
Topic: Ten dead after King Air crashes shortly after takeoff
Replies: 71
Views: 18213

Re: Ten dead after King Air crashes shortly after takeoff

I have a question for those with the expertise to answer it: Exactly how do-able is safe recovery from a failure of the critical engine at precisely the most critical instant of takeoff in a King Air 350 being properly operated, heavily (not over-) loaded, in benign weather? Should any fully qualifi...

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by hivue
Mon Jul 01, 2019 10:14 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Personally, I would like to see the test run again with line Max pilots not FAA Pilots. It's not beyond the scope for this to have been an attempt to "see we are being tough" by the FAA. I would not put this past them given their current quandary. There is simply too much of a disconnect ...

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by hivue
Mon Jul 01, 2019 10:08 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

In other words, if Boeing had bitten the bullet of the additional training costs associated with the pilot training that would have been required by the different handling characteristics of an NG and a MAX without MCAS, the MAX would still have been a highly fuel efficient plane and attractive to ...

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by hivue
Mon Jul 01, 2019 5:49 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

Sorry, you cant say the deign isn't the design. Except you just did! Relax. The poster I quoted was trying to provide the summary of "known facts" that a previous poster had requested for part 1 this new thread. I was just trying to clean up the "known facts" part in the interes...

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by hivue
Mon Jul 01, 2019 2:04 am
Forum: Civil Aviation
Topic: Ten dead after King Air crashes shortly after takeoff
Replies: 71
Views: 18213

Re: Ten dead after King Air crashes shortly after takeoff

Have you ever seen a plane a twin lose an engine on take off? They're uncontrollable, there's no way to try and avoid something. I don't think any twin can be certified today if it can't fly with one engine out, even at the most critical point of takeoff. There may have been other issues. Ten peopl...

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by hivue
Mon Jul 01, 2019 1:57 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

(3). Per an anonymous Boeing employee interview (see 60 Minutes Australia), MCAS 1.0 was intentionally designed to use exactly one AOA sensor. I believe this is not correct. MCAS 0.0 was designed with two sensor inputs: one AoA and G. When it was discovered during flight test that the "stick l...

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by hivue
Sun Jun 30, 2019 7:23 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q3 2019
Replies: 2675
Views: 348463

Re: Boeing 737MAX Grounded Worldwide Q3 2019

SteinarN wrote:
So, we see, with these numbers, that we put in a positive 25.6 percent elevator travel going from 10 degrees to 14 degrees AOA, but at the same time MCAS puts in AND negative 71 percent worth of elevator travel


MCAS works through the trimmable horizontal stabilizer, not the elevators.

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by hivue
Sat Jun 29, 2019 1:04 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

smartplane wrote:
The old adage, 'do it once, do it right' applies especially to commercial aviation safety, which Boeing needs to re-learn.


"Measure twice, cut once" would have been better advice for Boeing to have followed from the get-go.

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by hivue
Fri Jun 28, 2019 6:55 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

What happened? Did the FAA just fly the simulator and find a response problem with everything in normal operation, or did they simulate a broken piece of hardware by physically disabling part of the electronics? That is what we all like to know. They apparently, during the course of comprehensively...

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by hivue
Fri Jun 28, 2019 12:24 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

PixelFlight wrote:
In fact the FAA did communicate:


That communication communicates nothing. The FAA had to say something officially after the preliminary details were leaked -- apparently by one of their own.

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by hivue
Thu Jun 27, 2019 10:01 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

I don't think that the FAA "chose to leak", there are now expected to promptly communicate to the others administrations any important finding on the subject and consequently would loss credibility if there are not the first to announce the finding to the public. So why did they leak it i...

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by hivue
Thu Jun 27, 2019 9:16 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

https://www.cnbc.com/video/2019/06/27/b ... issue.html?

The 2:50 mark.
-->

Revelation wrote:
Leak? Boeing itself made a statement to the capital markets which is not a leak but is the whole dam busting!


But it was leaked before that -- and Boeing didn't leak it:

https://www.cnbc.com/video/2019/06/27/b ... issue.html?

The 2:50 mark.

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by hivue
Thu Jun 27, 2019 1:34 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

CNBC were emphasizing this morning that the fact that the FAA chose to leak the microprocessor issue is very significant (sorry, no link to that story yet). I have to agree.

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by hivue
Sun Jun 23, 2019 8:57 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Seattle Times? version of MCAS design and development story, subtly different to the NYT version. Apologies if already posted. https://insurancenewsnet.com/oarticle/the-inside-story-of-mcas-how-boeings-737-max-system-gained-power-and-lost-safeguards#.XQ9DdfZFw2x Ray Great read. Very informative. Bo...

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by hivue
Sat Jun 22, 2019 2:34 am
Forum: Civil Aviation
Topic: Boeing 777X Testing Thread - 2019
Replies: 641
Views: 167030

Re: Boeing 777X Testing Thread - 2019

morrisond wrote:
If it's longevity would that hold them back from a first flight?


They know changes to the engine are needing to be made. They may want to run as much of the test campaign with as near the production spec engine as they can.

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by hivue
Thu Jun 20, 2019 10:13 pm
Forum: Technical/Operations
Topic: Stuck two nights in LIT: Can't push back
Replies: 23
Views: 3376

Re: Stuck two nights in LIT: Can't push back

GalaxyFlyer wrote:
I’d like to see a link to the story, this doesn’t pass the smile test. Probably a 757 or 737.


The story was told by the person I mentioned under the circumstances I noted. There is no link.

It's hard to imagine that LIT wouldn't have a tow bar that could handle a 757 (let alone a 737).

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by hivue
Thu Jun 20, 2019 8:27 pm
Forum: Technical/Operations
Topic: Benefits of a 2 blade rotor
Replies: 15
Views: 3322

Re: Benefits of a 2 blade rotor

Cost is a major factor, right? Two blade semi-rigid rotors likely are cheaper but still work very well. Of course they are susceptible to mast bumping, but then three blade systems are susceptible to ground resonance issues that, I think, two blade systems don't have.

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by hivue
Thu Jun 20, 2019 8:17 pm
Forum: Technical/Operations
Topic: Stuck two nights in LIT: Can't push back
Replies: 23
Views: 3376

Stuck two nights in LIT: Can't push back

My apologies for the lack of detail, but I heard this story from someone while riding in a car with him and a number of other people. I could squeeze in only so many tech type questions during breaks in the conversation. This person was, within the last couple of weeks, flying AA Puerto Rico to DFW....

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by hivue
Tue Jun 18, 2019 5:54 pm
Forum: Civil Aviation
Topic: Business Risk for Boeing: The A321XLR
Replies: 409
Views: 45850

Re: Business Risk for Boeing: The A321XLR

]They've done their studies and found out that there is no market for a clean sheet MoM, or NSA, or whatever marketing name they'll come up with next. All their talk has been nothing but trying to trick Airbus into launching their own clean sheet, which as they know would be a commercial failure. P...

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by hivue
Thu Jun 13, 2019 8:41 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

There a lot of undelivered MAXs parked at Boeing Field and Everett. Obviously they were not trucked there from Renton. What are the precise circumstances under which the FAA allows MAXs to be flown (aside from test/certification flights)? Can Boeing move undelivered frames out of Washington state fo...

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by hivue
Wed Jun 12, 2019 3:52 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

My claim was that the ap could no longer fly the plane. you're saying this is wrong??? Say what? The bird strike occurred less than 4 minutes after departure. The AP would not have been on in the first place. The crew made 2 decisions that likely save everyone on board: ditch in the Hudson instead ...

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by hivue
Mon Jun 10, 2019 9:49 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

It’s interesting that this idea is found only in forums, and has never been reported in any media I can find. Why is that, do you suppose? Because the media can't realize any advertising dollars off such non-sensational information. The most damning article I have ever found is this one: https://ww...

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by hivue
Tue Jun 04, 2019 3:44 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Not heard much from our aerodynamics guys since the NYT article. I'm struggling with a number of aspects of what we have now read and I'm sure others would find it useful to be able better grasp the nuances. Perhaps, If I elucidate. It is reported MCAS V0.0, that as well as AOA high triggered, was ...

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by hivue
Mon Jun 03, 2019 6:09 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

Reading this article, assuming that it is a true representation of what happened around MCAS, one could believe that rank amateurs are working at Boeing on safety critical issues. On the contrary, this information seems to answer one of the great mysteries surrounding these events: why presumably t...

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by hivue
Tue May 21, 2019 7:08 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

https://www.youtube.com/watch?v=E42NN1rU93o

RIP Niki.
-->

Off topic, but (sadly) timely and not completely irrelevant to the arguments here over Boeing's corporate attitude and responsibility toward these accidents --

https://www.youtube.com/watch?v=E42NN1rU93o

RIP Niki.

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by hivue
Thu May 16, 2019 8:19 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q2 2019
Replies: 3768
Views: 385681

Re: Boeing 737MAX Grounded Worldwide Q2 2019

14ccKemiskt wrote:
Since Boeing themselves said that a fix was in the works already in november, it apparently took them at least six (!) months to implement. One wonders why it took so long time.


Because they learned their lesson after their MCAS 1 slap-dash patch and decided to take time to do it right for MCAS 2?

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by hivue
Wed May 15, 2019 8:41 pm
Forum: Civil Aviation
Topic: Why weren’t the A330s grounded after the pitot tube issues?
Replies: 94
Views: 16934

Re: Why weren’t the A330s not grounded after the pitot tube issues?

If we are revisiting lack of grounding, I'm surprised the RR 777s werent grounded after BA 038. The issue with the FOHE was dangerous. Hardly. BA038 was as close as you're going to see to a major airplane accident with no cause: no pilot error, no mechanical issue, no design flaw, no bad fuel, no b...

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