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Search: Posts Made By: edmundronald
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2nd Feb 2020, 12:35
Replies: 92
Views: 60,493
Posted By edmundronald

If both engines can be taken out by the same...

If both engines can be taken out by the same spilled cup of coffee, ETOPS certification is not worth much.

This thread started as a joke or hoax, it turns out it is a deadly serious indication...
27th Jan 2020, 09:21
Replies: 8
Views: 9,937
Posted By edmundronald

Interesting that no slides are deployed on this...

Interesting that no slides are deployed on this one, and that the arrival is managed as a "disembarcation" rather than an evacuation.

As they say, any landing you can walk away from with your...
20th Jan 2020, 16:37
Replies: 683
Views: 1,667,986
Posted By edmundronald

According to a post above Iran has the equivalent...

According to a post above Iran has the equivalent of S400 with 200 miles reach, but of course some of the same are active in Syria, possibly Turkey nowadays and there are similar US-supplied systems...
17th Jan 2020, 04:48
Replies: 58
Views: 50,599
Posted By edmundronald

People in the corporate world have been around...

People in the corporate world have been around for so long they can't see the forest for the trees:
- In olden days the owners of a company were financially and criminally responsible for its...
16th Jan 2020, 02:58
Replies: 58
Views: 50,599
Posted By edmundronald

If someone here has an idea how regulation can...

If someone here has an idea how regulation can discourage a company from maximising medium term shareholder value, they should say so.

Because this sad story is a sum of 2 effects:
- Companies...
26th Dec 2019, 19:56
Replies: 288
Views: 343,704
Posted By edmundronald

Gums, The lawyers for the deceased will get...

Gums,

The lawyers for the deceased will get $2M per American passenger, peanuts for others, and mucho moolah for lawyers themselves.

Shareholder lawsuits, customer lawsuits, possible criminal...
26th Dec 2019, 02:00
Replies: 288
Views: 343,704
Posted By edmundronald

Flocks, One of the discoveries when a...

Flocks,

One of the discoveries when a magnifying glass was passed over the trim runaway training in light of some real-world incidents with the MAX is that it appears that BA "forgot" to implement...
24th Dec 2019, 08:40
Replies: 288
Views: 343,704
Posted By edmundronald

The question is what it flies like, not what it...

The question is what it flies like, not what it feels like. MCAS may re-linearise MAX to resemble NG in normal flight, but we don't know when and whether the behavior of Max can depart from that of...
24th Dec 2019, 07:18
Replies: 288
Views: 343,704
Posted By edmundronald

MechEngr, You have very cogently made the...

MechEngr,

You have very cogently made the case -by reasoning- for the need for something like MCAS; of course if a new force is introduced it would be desirable to offset it if one wishes to use...
24th Dec 2019, 03:30
Replies: 288
Views: 343,704
Posted By edmundronald

Yes. And we’re saying we believe that the...

Yes. And we’re saying we believe that the envelope where the MAX is natively nice is too small to allow it to be certified, and this is what Boeing is hiding with passive collusion from the FAA. If...
24th Dec 2019, 00:57
Replies: 288
Views: 343,704
Posted By edmundronald

Gums, Math jargon Sri’s , “may exhibit...

Gums,
Math jargon Sri’s , “may exhibit non-linear feedback” is the engineer’s equivalent of saying may become EXTREMELY unpredictable.

- one wants a system to be controllable - ie can be...
23rd Dec 2019, 02:21
Replies: 288
Views: 343,704
Posted By edmundronald

Gums, Why donít you whisper that question...

Gums,

Why donít you whisper that question in the ear of your elected congresscritter?

My belief is that itís not a simple curve, but depends on some additional factors eg. thrust vs....
18th Dec 2019, 03:58
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

I predict the 737 MAX inventory will be written...

I predict the 737 MAX inventory will be written off. The Chinese or Europeans or Canadians will get blamed. The company is preparing a new design for market, and as soon as they have the project...
17th Dec 2019, 11:08
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

If management tells you to take off with an...

If management tells you to take off with an unfixed tech issue which you consider potentially hazardous, do you do it?

I wouldnt design a single sensor control loop in an aero control application...
16th Dec 2019, 23:56
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

I have no understanding of cost and schedule, but...

I have no understanding of cost and schedule, but as regards engineering safety aspects, in my opinion management interventions won't help as the process is now rotten. My guess is that when they...
16th Dec 2019, 23:16
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

I agree with you partially. You are right, that...

I agree with you partially. You are right, that the fault wasn't caught on review was an issue of abusive self-certification. But certification relates to CHECKING the design. No reasonable engineer...
16th Dec 2019, 22:12
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

Speaking as an engineer SLF, the number of bad...

Speaking as an engineer SLF, the number of bad design decisions and implementation errors impinging on this subsystem are amazing: To the actual repeat/cyclic MCAS with lethal authority, add

-...
12th Dec 2019, 16:06
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

I find it amusing that even pilots qualified on...

I find it amusing that even pilots qualified on type canít comment usefully on the MCAS fix because Boeing still wonít come clean on the purpose(s) of MCAS and the native aerodynamics of the MAX.
...
12th Dec 2019, 12:00
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

I would assume that the SEC is as zealous as the...

I would assume that the SEC is as zealous as the FAA😂

Edmund
3rd Dec 2019, 22:54
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

The rest of us non-pilot idiots here really...

The rest of us non-pilot idiots here really wonder what the native behavior of the MAX without MCAS is like.
In other words, documentation of the aero problem which MCAS is supposedly minimizing...
2nd Dec 2019, 22:29
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

It seems a french test pilot, Jean Franchi and...

It seems a french test pilot, Jean Franchi and then a british one Brian Walpole both both barrel rolled a Concorde during testing. From the pilot video below it's clear the french were quite familiar...
30th Oct 2019, 04:29
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

I watched the hearings after Indonesian and at...

I watched the hearings after Indonesian and at the time it was all about blaming the foreign-trained pilots and telling the foreign victims relatives ďtoo badĒ., with the unions confirming their...
25th Oct 2019, 12:09
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

So now the report is out, the airline can blame...

So now the report is out, the airline can blame Boeing, Boeing can blame the pilots and maintenance, and the FAA who are actually supposed to be the failsafe on design and training requirements can...
23rd Oct 2019, 10:20
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

We have it on record the the test pilots reported...

We have it on record the the test pilots reported the stick gradient issue and recommended an aerodynamic solution, but were overruled. They were then in the loop on every change and evolution in...
22nd Oct 2019, 23:47
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

Of relevance: Forkner was a technical pilot, his...

Of relevance: Forkner was a technical pilot, his job was fly sim and write manuals and procedures.
He’s a glorified secretary with a pilot’s license.
There’s no indication he was senior in any...
20th Oct 2019, 22:23
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

Their problem isnt Forkner who was just a useful...

Their problem isnt Forkner who was just a useful mid grade employee, a ďtechnicalĒ pilot who did little real flying, the problem is the test pilots will get deposed, and they certainly passed on...
20th Oct 2019, 04:22
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

indeed. I am not a physics guy. So i just say the...

indeed. I am not a physics guy. So i just say the probability of an MCAS failure is p; probability of flight without failure is (1-p).
So, probability of n flights without failure (1-p)**n.

This...
18th Oct 2019, 23:05
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

Gums, I’m just an SLF. Worried about the...

Gums,

I’m just an SLF. Worried about the certification system, hoping the FAA and even EASA get a good kick in the rear parts to keep them honest. I can understand the manufacturers trying to cut...
18th Oct 2019, 22:02
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

There is now cause to depose tech and test...

There is now cause to depose tech and test pilots, and go fishing.
11th Oct 2019, 11:21
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

Reuters JATR summaty

Reuters has the summary of the JATR report on both FAA and Boeing. Itís neither better nor worse than expected. Add pilot training issues and maybe maintenance errors and you get a few hundred so...
24th Sep 2019, 12:34
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

A condition that kills you in 3 seconds would...

A condition that kills you in 3 seconds would justify a display and a circuit breaker.

I have no doubt that ten years from now an AoA/Mcas related fault will kill some poor bastards again.
...
9th Sep 2019, 16:02
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

There were lots of big red buttons already, FAA...

There were lots of big red buttons already, FAA delegated engineers. A word in the ear of any of them shoulda stopped the train. If there is a safety issue, and the FAA engineer documents it, he...
8th Sep 2019, 11:51
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

This guy coulda have stopped the train with a...

This guy coulda have stopped the train with a quick word over lunch to his counterpart at the FAA: That he had to make the request to the FAA in the company name doesnít mean they needed to grant it....
7th Sep 2019, 13:30
Replies: 170
Views: 214,963
Posted By edmundronald

Indeed. The issue is not a single test failure -...

Indeed. The issue is not a single test failure - that's what tests are there for. The issue is whether Boeing is going to identify the cause of the failure and ensure that it doesn't propagate...
6th Sep 2019, 21:03
Replies: 4,656
Views: 4,549,870
Posted By edmundronald

And we havenít yet seen what the Chinese will...

And we havenít yet seen what the Chinese will demand.

Edmund
Showing results 1 to 35 of 275
 


 
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