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Search: Posts Made By: MemberBerry
Showing results 1 to 35 of 52
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Forum: Rumours & News
24th Oct 2019, 13:19
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Boeing wants it to fly, but travelers fear the...

Boeing wants it to fly, but travelers fear the 737 MAX (https://www.msn.com/en-us/travel/news/boeing-wants-it-to-fly-but-travelers-fear-the-737-max/ar-AAJ3UCO?ocid=spartanntp)

From the article:
Forum: Rumours & News
21st Oct 2019, 10:00
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

The Lion Air final report will be shared with the...

The Lion Air final report will be shared with the families of the victims on Wednesday. Public release date not announced yet.

Lion Air 737 MAX families set for crash report briefing...
Forum: Rumours & News
19th Oct 2019, 20:52
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Wow. Accusations of fraud coming from the pilots...

Wow. Accusations of fraud coming from the pilots of one of Boeing's largest customers... Not a good week for Boeing.
Forum: Rumours & News
12th Oct 2019, 14:05
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

This is the section of the JATR report discussing...

This is the section of the JATR report discussing the relation between stall behavior and MCAS, I highlighted the parts I found interesting:



I found especially interesting that last finding,...
Forum: Rumours & News
11th Oct 2019, 23:24
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Thanks. Here we had long discussions over where...

Thanks. Here we had long discussions over where the balance should be between "let's make aircraft designs better" and "let's train pilots better". Related to that, I found an interesting statement...
Forum: Rumours & News
6th Oct 2019, 23:18
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Actually, it matters. Saying it doesn't matter is...

Actually, it matters. Saying it doesn't matter is like saying it doesn't matter if an aircraft has 2 or 3 FCCs and AOA vanes.
Forum: Rumours & News
1st Oct 2019, 05:24
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

I was thinking that even axial forces could...

I was thinking that even axial forces could increase the friction between the ball nut and the screw. I know a ball nut has much lower friction compared to a regular nut, but I'm not sure how it...
Forum: Rumours & News
1st Oct 2019, 04:33
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

I believe it is the aerodynamic load causing it,...

I believe it is the aerodynamic load causing it, but indirectly. I believe the aerodynamic loads on the stabilizer and the elevator cause increased friction between the nut and the jack screw.


...
Forum: Rumours & News
29th Sep 2019, 16:05
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

[/left] From what I understand the system is...

[/left]
From what I understand the system is indeed designed so that holding the trim wheels while the electric motor is adjusting the trim will disengage the electric motor, via a clutch mechanism....
Forum: Rumours & News
29th Sep 2019, 00:05
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Having to apply significant force to the control...

Having to apply significant force to the control column to counter the out of trim stabilizer might make it difficult to use the thumb switches. For example the Ethiopian captain asked the FO to help...
Forum: Rumours & News
23rd Sep 2019, 09:25
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Not a pilot. In the MAX threads there was a...

Not a pilot. In the MAX threads there was a comment from a 737 captain some time ago, regarding a discussion he was having about MCAS with his first officer. He said that during the discussion he...
Forum: Rumours & News
12th Sep 2019, 21:11
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Maybe they plan to address it indirectly through...

Maybe they plan to address it indirectly through the "Improved crew procedures (and associated training)" part of the proposed solutions. For example by re-including the "roller-coaster" technique in...
Forum: Rumours & News
12th Sep 2019, 19:56
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

From those slides presented to the European...

From those slides presented to the European Parliament, EASA said they found 4 significant technical problems that would need to be addressed:



And, according to the same slides, the solutions...
Forum: Rumours & News
11th Sep 2019, 02:27
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Actually that's probably what happened to the...

Actually that's probably what happened to the Lion Air accident flight, not to the Ethiopian flight. There was not much trimming done on the Ethiopian flight, but on the Lion Air accident flight they...
Forum: Rumours & News
7th Sep 2019, 05:27
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

It's interesting that the EASA presentation...

It's interesting that the EASA presentation included a graphical description of MCAS by AFP, calling it an "anti-stall system":
...
Forum: Rumours & News
27th Aug 2019, 17:03
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

The article from Der Spiegel pointed out...

The article from Der Spiegel pointed out something interesting: with all the outsourcing Boeing did for component manufacturing, it should now be easier for new aircraft manufacturers to emerge,...
Forum: Rumours & News
26th Aug 2019, 00:47
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

I might be wrong, but I don't remember anything...

I might be wrong, but I don't remember anything suggesting the Ethiopian captain handed the controls over to the first officer. According to the preliminary report the captain asked the FO to help...
Forum: Rumours & News
26th Aug 2019, 00:27
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Still, even with the aircraft severely out of...

Still, even with the aircraft severely out of trim, with unreliable airspeed and altitude information, the airspeed around VMO, stick shaker and other distractions, the pilots managed too keep the...
Forum: Rumours & News
25th Aug 2019, 21:08
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

I realized how confusing the situation would have...

I realized how confusing the situation would have been for the Ethiopian captain after working on my comment comparing the differences between the pressure altitudes computed on the left side and the...
Forum: Rumours & News
25th Aug 2019, 18:17
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

No idea how exactly Reuters created that graph,...

No idea how exactly Reuters created that graph, but it doesn't seem to match what happened accurately at all:
...
Forum: Rumours & News
23rd Aug 2019, 23:31
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Not a pilot. FAA's assumption that during manual...

Not a pilot. FAA's assumption that during manual flight pilots will begin to respond to emergencies within one second sounds reasonable, if we take "will begin to respond" literally.

A study about...
Forum: Rumours & News
25th Jul 2019, 23:27
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Maybe those pilots had everything they needed....

Maybe those pilots had everything they needed. Except adequate training. And one reason for that was that Boeing claimed no simulator training was necessary. Boeing claimed that all that was required...
Forum: Rumours & News
13th Jul 2019, 22:30
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

That's very sad. Unfortunately I suspect the...

That's very sad. Unfortunately I suspect the people bearing the most responsibility are the ones showing the least remorse.
Forum: Rumours & News
12th Jul 2019, 15:58
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

The main message from that article is that Boeing...

The main message from that article is that Boeing is too big to fail. And that Boeing failing would be a disaster for the US, so the lawmakers and the press should cut them some slack to prevent...
Forum: Rumours & News
7th Jul 2019, 13:15
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Indeed the AOA issues didn't start after...

Indeed the AOA issues didn't start after replacing it, there were some faults reported by the OMF system on two previous occasions, that's why they replaced it. But the stick shaker simptom started...
Forum: Rumours & News
7th Jul 2019, 03:27
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Sorry, but you got the sequence of events wrong....

Sorry, but you got the sequence of events wrong. This has nothing whatsoever to do with the Ethiopian flight, but with the last two Lion Air flights, the one before the accident, and the accident...
Forum: Rumours & News
6th Jul 2019, 23:41
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

In my initial post I actually called them...

In my initial post I actually called them "technicians", and I thought it was obvious from the context what that meant. What I actually meant was "aircraft mechanic". Sorry about that. In the...
Forum: Rumours & News
6th Jul 2019, 21:44
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

What I'm complaining about is not necessarily MAX...

What I'm complaining about is not necessarily MAX / MCAS specific. I would still criticize them for not reporting the stick shaker even if they were flying an NG, not a MAX. Reporting the stick...
Forum: Rumours & News
6th Jul 2019, 14:03
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Now, personally I don't feel the need to...

Now, personally I don't feel the need to criticize the previous Lion Air crew for their initial response to the emergency. As you said they saved the aircraft from a malfunctioning system they didn't...
Forum: Rumours & News
4th Jul 2019, 22:10
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

To be fair, most of the time yoko has blamed both...

To be fair, most of the time yoko has blamed both Boeing and the pilots, or more precisely their training. And his insight adds a lot to the discussion. Compared to some of the rabid posts against...
Forum: Rumours & News
3rd Jul 2019, 20:41
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

I agree, they could misidentify the...

I agree, they could misidentify the malfunctioning system, but if the F/O kept his hand on the cutout switch after reenabling the wrong system, they could immediately disable trim again at the first...
Forum: Rumours & News
3rd Jul 2019, 00:03
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

A certain poster would have called HAL "the...

A certain poster would have called HAL "the magic" in his famous mantra. From Wikipedia:

https://en.wikipedia.org/wiki/HAL_9000
Forum: Rumours & News
2nd Jul 2019, 22:41
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

[/LEFT] Yeah, the fact that the cutout...

[/LEFT]



Yeah, the fact that the cutout switches are not wired identically in series is a bit strange. It's almost like somebody told the person responsible for the design "you have 5 minute to...
Forum: Rumours & News
2nd Jul 2019, 11:55
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

Well, the trim schematic shows the thumb switch...

Well, the trim schematic shows the thumb switch outputs for "up" and "down" connected together, and there are direct connections that go to the DFDAU (Digital Flight Data Acquisition Unit). This...
Forum: Rumours & News
2nd Jul 2019, 00:44
Replies: 4,656
Views: 4,789,186
Posted By MemberBerry

While looking at the schematics for the electric...

While looking at the schematics for the electric trim system on the MAX posted by yoko1, and comparing them to the NG schematics, I noticed something interesting:

- on the NG the cutout switches...
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