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Search: Posts Made By: Maninthebar
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17th Dec 2019, 13:02
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

I think your timescale is a little compressed -...

I think your timescale is a little compressed - suppliers will produce parts for stock for a period, just so they can recover quickly if/when approval to fly is given. The difficulties will come when...
16th Dec 2019, 08:47
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

My working definition of a "lieing" is "knowingly...

My working definition of a "lieing" is "knowingly telling an untruth". It is doubtful whether an AoA sensor is capable of knowledge.

Other than that I think you chaps are in danger of furiously...
12th Dec 2019, 13:36
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Just a thought but....it is supposed to address...

Just a thought but....it is supposed to address an issue in wings level, low mach, high AoA conditions. Could this be a concern that Boeing raised internally in relation to Go Around (and GA-like)...
12th Dec 2019, 13:08
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

With respect, fulfilling your condition 2 would...

With respect, fulfilling your condition 2 would obviate the stated purpose of MCAS which is to increase apparent stick force required to 'pull up' in certain parts of the flight envelope. If PF can...
11th Dec 2019, 08:23
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Strikes me as quite scary for Boeing shareholders...

Strikes me as quite scary for Boeing shareholders that the Company is desperate enough to take an antagonistic line towards the lead regulator (rather than the collaborative approach previously...
2nd Dec 2019, 13:21
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Which must be diagnosed as runaway trim after 3...

Which must be diagnosed as runaway trim after 3 seconds EXCEPT when it is operating in certain corners of the flight envelope

Which are secret
22nd Nov 2019, 13:39
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Is there an example of a commercial flight...

Is there an example of a commercial flight entering and recovering from a spin that you can point me to?
21st Nov 2019, 08:51
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Appears to be available online here...

Appears to be available online here (https://www.channel4.com/programmes/boeings-killer-plane-what-went-wrong/on-demand/70508-001)
20th Nov 2019, 08:24
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

The reported tracks of the recent test flights...

The reported tracks of the recent test flights appear to show that some 'vigorous' manoeuvres were repeatedly attempted - whether these were solely recovery from MCAS operation or included unmediated...
12th Nov 2019, 08:32
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

It seems to me, and in answer to Gums point, that...

It seems to me, and in answer to Gums point, that training MUST be offered to enable pilots to be able to distinguish 'correct' MCAS activation (allow auto trim to run to give stick forces per...
11th Nov 2019, 09:00
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

I fear not. 1. The economies offered by the...

I fear not.

1. The economies offered by the MAX are built into the financial models of airlines
2. Airlines are locked into long term contracts with lease-finance companies, and thence with...
11th Nov 2019, 07:53
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

fdr, thank you, as ever, for your input to this...

fdr, thank you, as ever, for your input to this thread.

I'm afraid my contribution is only to say that I VERY much enjoyed the wonky dilythium crystals which forced the plane off piste and into...
7th Nov 2019, 15:17
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Interesting traces in the middle hour - is that...

Interesting traces in the middle hour - is that approach to stall and recovery? Looks like they had particular fun in the last excursion and then called it a day
5th Nov 2019, 16:36
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

And, in a statement of the bleeding obvious,...

And, in a statement of the bleeding obvious, dependant on the outcome of testing this month. It would appear that parties have previously committed the fallacy of assuming the conclusion....
31st Oct 2019, 15:13
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

My reading of it is that Boeing carried out the...

My reading of it is that Boeing carried out the tests, first on the low speed (high mach) version, found these to be manageable and then reassessed for the high speed (low mach) version. In each case...
31st Oct 2019, 14:51
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

The KNKT report states that Boeing did test MCAS...

The KNKT report states that Boeing did test MCAS misfire in the sim, but without any associated cause and therefore without the warnings and other symptoms associated with whatever triggered MCAS in...
31st Oct 2019, 13:12
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

You have comprehensively missed point. JATR...

You have comprehensively missed point.

JATR are recommending that certifying authorities (re)consider the handling characteristics of the airframe in the case where MCAS does not activate WHEN IT...
31st Oct 2019, 12:44
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

My question was not to do with either accident...

My question was not to do with either accident but the circumstances for which MCAS was designed to work. Its implementation suggests that Boeing did not believe that the Pitch and Power mantra would...
31st Oct 2019, 12:23
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

The kicker to this is that Boeing engineers found...

The kicker to this is that Boeing engineers found that their original implementation (presumably not based on guesswork) was markedly insufficient to meet the need they had identified. Therefore a...
30th Oct 2019, 11:40
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

He HAS to say that though, doesn't he, cos that...

He HAS to say that though, doesn't he, cos that was the basis of lack of requirement for separate training and documentation.
29th Oct 2019, 09:39
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

I was astonished to read, in the report quoted by...

I was astonished to read, in the report quoted by Grebe, that
"Boeing engineers seemed to realize they had underestimated MCAS's ability to push the plane's nose down forcefully and repeatedly, and...
25th Oct 2019, 17:24
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

From the report

From the report
25th Oct 2019, 16:17
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

"Following the Lion Air accident, Boeing convened...

"Following the Lion Air accident, Boeing convened a Safety Review Board (SRB) to reconsider whether the absence of the AOA DISAGREE alert from certain Boeing 737-8 (MAX) flight displays presented a...
25th Oct 2019, 16:13
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

So far as I remember the (sometimes heated)...

So far as I remember the (sometimes heated) discussion there were those who maintained, and probably still maintain, that the memory drill for Runaway Stabiliser Trim would have saved both crews AND...
25th Oct 2019, 06:37
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

We know the ET flight could not engage AP

We know the ET flight could not engage AP
23rd Oct 2019, 14:05
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Of course, no discussion would be that short but...

Of course, no discussion would be that short but we know that at least some of the decisions were driven by customer desire not to have to pay for extra training so the equation around gear length...
15th Oct 2019, 10:39
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

I believe this draws attention to a related,...

I believe this draws attention to a related, serious issue, unique to the MAX.

MCAS is designed to increase stick force at parts of the flight envelope where, by implication, aerodynamic forces no...
8th Oct 2019, 15:25
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

To be honest, I'm not so sold on this angle - too...

To be honest, I'm not so sold on this angle - too many big businesses in Europe (and worldwide) are dependant on the continued health of Boeing whether it is manufacturing bits or simply flying the...
8th Oct 2019, 14:47
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

....and a great dependance on the outcomes of the...

....and a great dependance on the outcomes of the Accident Reports.
27th Sep 2019, 06:43
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

For the avoidance of doubt and for the benefit of...

For the avoidance of doubt and for the benefit of other readers - can you confirm then that the smaller trim wheel in the NG and the MAX works fine and that you have used it successfully in air...
23rd Sep 2019, 14:34
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

....and when one of your prior warnings is UAS

....and when one of your prior warnings is UAS
23rd Sep 2019, 09:21
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Don't imagine that the FAA will have pulled these...

Don't imagine that the FAA will have pulled these authorities out of a hat
Canada - because the North American airspace is a contained environment in which a large number MAX flights can take pace...
13th Sep 2019, 07:28
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

Dave I think you have made the...

Dave

I think you have made the (understandable) assumption that the current design is optimised for output v input force.

I suspect the truth is that this is but one part of the calculation(s)...
12th Sep 2019, 20:36
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

For as long as manual trim is referenced as a...

For as long as manual trim is referenced as a risk management tool in memory items, QRH, checklists, manuals or ADs then it will need to be useable by flight crew.

Either it is necessary or it is...
12th Sep 2019, 10:26
Replies: 4,656
Views: 4,783,988
Posted By Maninthebar

.....and it's not only SWA who are suffering for...

.....and it's not only SWA who are suffering for the lack of MAX deliveries
Showing results 1 to 35 of 69
 


 
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