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30th May 2019, 02:48
Replies: 3,970
Views: 3,508,374
Posted By wheelsright

Certification is a binary process denoting an...

Certification is a binary process denoting an acceptable level of risk. Safety or risk is inherently not binary but is subject to the exercise of judgment to arrive at a compromise that can be...
7th May 2019, 00:25
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

"One last time" the FDR trace does not track...

"One last time" the FDR trace does not track thumb switch trim inputs. Therefore, it cannot be said with certainty what the pilots were doing. The assumption is that Boeing advice is correct but it...
6th May 2019, 19:27
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

safeteepee #5039 Do not disagree with...

safeteepee #5039

Do not disagree with anything in your post.

But do you think that it is possible to use electric trim to counteract MCAS before using the cut-out switches? I feel there is...
6th May 2019, 18:28
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Sorry to push you on this, but that is not a...

Sorry to push you on this, but that is not a clear answer. What precisely is the procedure that the ET302 pilots should have followed? ie What would you have done? That is not in any way suggesting...
6th May 2019, 17:45
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Actually, I think it would be better to go into...

Actually, I think it would be better to go into it and not take your word for it. I for one would like a full explanation. Many people are clearly missing something. PS Most people know the memory...
6th May 2019, 17:29
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Re your quote from my comment... I thought that...

Re your quote from my comment... I thought that is what I said, sorry if it was not clear. The AoA signal is routed to the FCC's; thereafter it is processed. For reasons that are not clear, MCAS was...
6th May 2019, 16:58
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

IMHO it is that simple. There are ordinarily...

IMHO it is that simple. There are ordinarily circumstance that there will be disagreement or unreliable data. For example, before the aircraft has sufficient speed before takeoff, AoA is meaningless....
6th May 2019, 16:09
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Not really true. A MAX pilot should immediatley...

Not really true. A MAX pilot should immediatley disable electric trim if AoA disagree, period. That is what we now know. We also know that the system should disable MCAS in the event off AoA disagree...
6th May 2019, 15:57
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

What is the big issue?

Among others, 737 Driver is getting a lot of flack in this thread because some people see his contributions as trying to deflect blame away from Boeing and on to the pilots. I would not be so harsh,...
4th May 2019, 15:27
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

"No evidence" is a commonly used phrase used to...

"No evidence" is a commonly used phrase used to justify all manner of absurdity (usually by politicians). The absence of evidence does not rule in or rule out anything.

"It is absolutely clear...
4th May 2019, 12:25
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

I agree with your observation. I think we all...

I agree with your observation. I think we all aspire to function well under severe pressure or danger. The truth is even we cannot predict how we will operate under intense pressure let alone how...
4th May 2019, 02:48
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Of course you are right that in the context of an...

Of course you are right that in the context of an air accident investigation it is better not to approach the matter with the view to assigning blame or liability. But it is naive to assume that...
3rd May 2019, 20:17
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

"This is how commercial aviation has become as...

"This is how commercial aviation has become as safe as it is" I suspect that it is rather an Alice in Wonderland perspective. Every accident that involves loss of life, ultimately requires the...
3rd May 2019, 14:19
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

That is the assumption that is at question (my...

That is the assumption that is at question (my emphasis). If your suggestion is correct then the crew did not apply sufficient opposite trim inputs. It remains in doubt as to whether it is possible...
2nd May 2019, 17:56
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

The direction of this thread is difficult to...

The direction of this thread is difficult to understand. There seems to be a surprising focus on the cut-out switches but no rational explanation for the changes in the MAX series. If there are no...
2nd May 2019, 13:34
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

It is not clear what the current published FDR...

It is not clear what the current published FDR traces are actually reporting... I am not saying that your interpretation is wrong but it is not absolutely certain. Does the thumb switch have absolute...
1st May 2019, 19:33
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Unfortunately, Boeing cannot be relied on as...

Unfortunately, Boeing cannot be relied on as providing full and accurate information. The investigation and further legal actions will have to resolve how the systems actually works. There may be an...
6th Apr 2019, 23:14
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

How do you know that?

How do you know that?
5th Apr 2019, 10:44
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

I agree, but this anomaly is only part of the...

I agree, but this anomaly is only part of the story. There is also the question of why there are so few electric trim corrections considering the circumstances? MCAS has massive authority despite...
4th Apr 2019, 18:51
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

The biggest issue that I see from the data so far...

The biggest issue that I see from the data so far is the massive authority that MCAS has and how small the authority of the STS/ pickle switch is. Two massive MCAS AND trim adjustments in the space...
4th Apr 2019, 16:58
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

Quite simply the LionAir data does not establish...

Quite simply the LionAir data does not establish that it is possible to win the battle between Electric Trim and MCAS (particularly if time is of the essence). With combined opposing authority it may...
4th Apr 2019, 12:09
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

It is not known that the pickle switches are the...

It is not known that the pickle switches are the solution. It is just a theory. Of course, that theory could be correct but would not address runaway trim unrelated to MCAS. It is not clear that the...
27th Mar 2019, 11:44
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

This description while helpful is no more than...

This description while helpful is no more than very superficial and raises far more questions than it answers. Only a comprehensive review of the hardware and software involved in MCAS together with...
27th Mar 2019, 10:33
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

"Doomed" was based on the fact that the aircraft...

"Doomed" was based on the fact that the aircraft did crash; for whatever the reason. It was not intended to mean that at no time was the accident avoidable. It is certain, by the combination of...
27th Mar 2019, 06:40
Replies: 5,127
Views: 10,299,544
Posted By wheelsright

I think that you are nearer the mark than most...

I think that you are nearer the mark than most other posts. I am still seeing posts that A/P should be engaged to overcome trim runaway (contrary to Boeing revised OP). Currently, all there is to go...
Showing results 1 to 25 of 64
 


 
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