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Search: Posts Made By: Takwis
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18th Dec 2019, 18:02
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Okay, wind-up turns leading to accelerated...

Okay, wind-up turns leading to accelerated stalls...the stated aerodynamic situation the MCAS was designed for, at 500knots groundspeed, at around 33,000 feet. We're guessing. Anyone got a better one?
18th Dec 2019, 16:41
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Older than the "Classics", which came out in...

Older than the "Classics", which came out in 1984. This was for the 737-100 and -200, and the 707, before them. I practiced it (once) in a KC-135, more than three decades ago. Not sure when the...
18th Dec 2019, 16:20
Replies: 4,656
Views: 4,784,399
Posted By Takwis

"If nose up trim is required, RAISE THE NOSE WELL...

"If nose up trim is required, RAISE THE NOSE WELL ABOVE THE HORIZON with elevator control. Then slowly relax the control column pressure and manually trim nose up. Allow the nose to drop TO THE...
18th Dec 2019, 15:22
Replies: 4,656
Views: 4,784,399
Posted By Takwis

If they are, they lose altitude, each time they...

If they are, they lose altitude, each time they do it. (I think those are stalls, a sharp altitude loss, and a rapid speed increase, then speed and altitude return to entry conditions.)
16th Dec 2019, 15:41
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Bringing that back to the 737, in the NG and MAX,...

Bringing that back to the 737, in the NG and MAX, we can tell when the lav is flushed, airborne, because the cabin air pressure rate of change gauge shows about a 500 fpm drop, and then rise....
16th Dec 2019, 13:52
Replies: 4,656
Views: 4,784,399
Posted By Takwis

My MAX FRM says "AOA Disagree Alert (amber)...

My MAX FRM says "AOA Disagree Alert (amber) [shows a picture] Indicates the Captain's (left) and First Officer's (right) angle of attack values disagree by more than 10 degrees for more tha 10...
14th Dec 2019, 15:08
Replies: 4,656
Views: 4,784,399
Posted By Takwis

If it had worked correctly, we wouldn't be having...

If it had worked correctly, we wouldn't be having this discussion.
14th Dec 2019, 03:48
Replies: 4,656
Views: 4,784,399
Posted By Takwis

There is no dispute. Boeing Technical pilot Mark...

There is no dispute. Boeing Technical pilot Mark Forkner asked and got the FAA to agree that MCAS wouldn't be included in the pilot's manuals. He succeeded, and, in his own words, used "Jedi mind...
13th Dec 2019, 21:29
Replies: 4,656
Views: 4,784,399
Posted By Takwis

I have not seen anything stating that the MCAS...

I have not seen anything stating that the MCAS paid any attention to pilot input. The length of the MCAS trimming appears to be solely determined by Mach and altitude. Lower altitude, close to ten...
13th Dec 2019, 17:33
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Great example. I was trying to keep mine simple,...

Great example. I was trying to keep mine simple, but apparently it was too simple.
13th Dec 2019, 14:02
Replies: 4,656
Views: 4,784,399
Posted By Takwis

David P. Davies' solution to a slight pitch up...

David P. Davies' solution to a slight pitch up into a stall in the 707 used only the elevator, not the much larger horizontal stab, and the solution was safe, effective, and benign. The MAX uses the...
13th Dec 2019, 02:47
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Would you buy a car where the: 1) cruise...

Would you buy a car where the:
1) cruise control kicked out unexpectedly
2) Steering moves unexpectedly
3) Steering control force increased unexpectedly ?

Really, all you have to do is recycle...
11th Dec 2019, 16:47
Replies: 4,656
Views: 4,784,399
Posted By Takwis

For comparison, on November 11th, they were...

For comparison, on November 11th, they were saying "1700+"... https://www.boeing.com/737-max-updates/
5th Dec 2019, 15:07
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Early B-52s had spoilers AND ailerons. Spoilers...

Early B-52s had spoilers AND ailerons. Spoilers only, on the later models. That's key to rolling a 707, too...raise the spoilers a bit, and you get increased differential deflection from them during...
2nd Dec 2019, 12:25
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Boeing does.

Boeing does.
30th Nov 2019, 13:56
Replies: 4,656
Views: 4,784,399
Posted By Takwis

The pilots of AS 261 were able to roll the...

The pilots of AS 261 were able to roll the aircraft inverted, but not to keep the nose up.The threads on the jackscrew had been excessively damaged by lack of lubrication, the nut separated from the...
24th Nov 2019, 13:44
Replies: 4,656
Views: 4,784,399
Posted By Takwis

I had come to that same conclusion, as soon as I...

I had come to that same conclusion, as soon as I first heard the name of the new model, MAX. I do hope your family does not get on it, but I think the general public will gradually forget, and fill...
23rd Nov 2019, 23:30
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Can you elaborate on the difference between...

Can you elaborate on the difference between “unacceptable stick force” and “non linear stick force which would be unacceptable for certification requirements”? I’m having a bit of trouble wrapping my...
23rd Nov 2019, 22:31
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Passengers lives vs. document handling. Yeah,...

Passengers lives vs. document handling. Yeah, that’s a dilemma, all right.
21st Nov 2019, 17:35
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Yeah. You would think that would be obvious by...

Yeah. You would think that would be obvious by now....
20th Nov 2019, 17:26
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Or ANYTHING to let the pilots know it was there,...

Or ANYTHING to let the pilots know it was there, and how it worked.
20th Nov 2019, 16:16
Replies: 4,656
Views: 4,784,399
Posted By Takwis

It would have been rather handy, if Boeing had...

It would have been rather handy, if Boeing had mentioned that after the Lion Air crash. They were adamant that the pilots weren't trimming enough, though. Much commentary was made, here, about those...
19th Nov 2019, 04:18
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Boeing will let us know, after the fact, that the...

Boeing will let us know, after the fact, that the crew should have figured that out.
14th Nov 2019, 14:43
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Two out of three is not bad.

Two out of three is not bad.
12th Nov 2019, 16:46
Replies: 4,656
Views: 4,784,399
Posted By Takwis

The more I read it, the more I am convinced that...

The more I read it, the more I am convinced that it just might be tongue-in-cheek. In which case, I have been thoroughly trolled :-)
12th Nov 2019, 14:55
Replies: 4,656
Views: 4,784,399
Posted By Takwis

And, more to the point; do you have some...

And, more to the point; do you have some financial incentive to rush the plane back into service, ready or not, and fix it later?
12th Nov 2019, 14:37
Replies: 4,656
Views: 4,784,399
Posted By Takwis

If the system is now perfectly safe, why do they...

If the system is now perfectly safe, why do they keep test flying it every day?


Don't you think that ought to be a memory item?

April? Why not last November? ;-)
11th Nov 2019, 02:00
Replies: 4,656
Views: 4,784,399
Posted By Takwis

I am worried, though, that we've got it ´figured...

I am worried, though, that we've got it ´figured out´, but the regulators deciding the MAX´s future are forging ahead, anyway:
...
10th Nov 2019, 23:49
Replies: 4,656
Views: 4,784,399
Posted By Takwis

"Delivery" means payment for the aircraft. Boeing...

"Delivery" means payment for the aircraft. Boeing is playing the old trick from the Popeye cartoons, where Wimpy will gladly pay you Tuesday (deliver the training materials) for a hamburger (payment...
10th Nov 2019, 18:22
Replies: 4,656
Views: 4,784,399
Posted By Takwis

I guess the "stab trim was available..."...

I guess the "stab trim was available..." statement means, in typical Boeing speak, that they DID use the trim, after "using elevator alone."
10th Nov 2019, 17:38
Replies: 4,656
Views: 4,784,399
Posted By Takwis

As long as we are guessing, I'm going to guess...

As long as we are guessing, I'm going to guess that means that countering single unintended MCAS activation by "elevator alone" applies to a single .6 unit movement of the stabilizer, since 2.4 units...
10th Nov 2019, 00:11
Replies: 4,656
Views: 4,784,399
Posted By Takwis

https://moneymaven.io/mishtalk/economics/boeing-73...

https://moneymaven.io/mishtalk/economics/boeing-737-max-major-design-flaws-not-a-software-failure-rVjJZBVzZkuZLkDJn3Jy8A/
9th Nov 2019, 15:24
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Yes. 80286s in the MAX, same master/slave for the...

Yes. 80286s in the MAX, same master/slave for the flight directors. The master f/d also determines which FCC is being used.
9th Nov 2019, 11:22
Replies: 4,656
Views: 4,784,399
Posted By Takwis

It's a dessert topping, AND a floorwax!

It's a dessert topping, AND a floorwax!
7th Nov 2019, 17:29
Replies: 4,656
Views: 4,784,399
Posted By Takwis

Lake 1952, I clicked on your link, just as Boeing...

Lake 1952, I clicked on your link, just as Boeing 1 was taking off, passing through 190 knots. New flight.
Showing results 1 to 35 of 87
 


 
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