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by 7BOEING7
Thu Dec 27, 2018 5:07 pm
Forum: Civil Aviation
Topic: Brussels Airlines A330 Suffers Dual Engine Failure
Replies: 211
Views: 37783

Re: Brussels Airlines A330 Suffers Dual Engine Failure

The law in the USA (CFR 121.565) says that in the event of an engine failure on a twin engine airplane in commercial service, the pilots SHALL land at the nearest suitable airport. Airplane model and manufacturers procedures don’t even play into it, this applies across the board. It isn’t a choice,...

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by 7BOEING7
Thu Dec 27, 2018 6:08 am
Forum: Civil Aviation
Topic: Brussels Airlines A330 Suffers Dual Engine Failure
Replies: 211
Views: 37783

Re: Brussels Airlines A330 Suffers Dual Engine Failure

As I said before, I'm pretty sure engine failure that won't restart: land as soon as possible Engine failure that restarts: land as soon as practicable Land as soon as practicable doesn't mean you gotta put it down on the nearest piece of pavement but doesn't mean you can continue 8 hours to your d...

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by 7BOEING7
Thu Dec 27, 2018 5:02 am
Forum: Civil Aviation
Topic: Brussels Airlines A330 Suffers Dual Engine Failure
Replies: 211
Views: 37783

Re: Brussels Airlines A330 Suffers Dual Engine Failure

Does anyone know what the checklists says? In regards to what? Engine failure? Company procedure may supersede the QRH in the case of a reduced thrust situation. The Boeing ENG FAIL checklist says to land at the nearest suitable airport. I don’t recall if the Engine Relight checklist says to land. ...

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by 7BOEING7
Mon Dec 24, 2018 6:02 am
Forum: Technical/Operations
Topic: Pilots and AMTs, when do you use the a/c horn?
Replies: 37
Views: 3463

Re: Pilots and AMTs, when do you use the a/c horn?

Airbus types also have a "ground call", call MECH on the instrument panel. It is so soft I wouldn't call it a horn ... more of a buzzer. https://www.youtube.com/watch?v=uejnfF_ojHk https://www.pprune.org/tech-log/300851-airbus-external-horn.html I'm puzzled by the what a/c uses the ACP in...

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by 7BOEING7
Sun Dec 23, 2018 10:45 pm
Forum: Technical/Operations
Topic: Pilots and AMTs, when do you use the a/c horn?
Replies: 37
Views: 3463

Re: Pilots and AMTs, when do you use the a/c horn?

GalaxyFlyer wrote:
I’ve never seen a plane with one.

GF


I would assume he’s talking about the ground crew call “horn” (Boeing).

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by 7BOEING7
Wed Dec 12, 2018 10:19 pm
Forum: Civil Aviation
Topic: Did the 737 MAX go one step too far?
Replies: 232
Views: 33276

Re: Did the 737 MAX go one step too far?

Thanks for all the feedback people. It just still seems weird that Boeing would not have been more transparent and trained those lion pilots on the new procedures on the Max. Even Southwest and American pilots questioned Boeing on not knowing all the procedures on how to disengage the new AOA syste...

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by 7BOEING7
Tue Dec 11, 2018 10:18 pm
Forum: Civil Aviation
Topic: Did the 737 MAX go one step too far?
Replies: 232
Views: 33276

Re: Did the 737 MAX go one step too far?

2. On the 737-Max -- MCS goes even further and applies trim nose-down in the low-speed, high AOA flight regime because the flight control system, and the stab, may not have the authority for the pilots to adaquetly recover from this situation when a stall approaches. So does the STS in the 737NG. N...

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by 7BOEING7
Tue Dec 11, 2018 7:03 pm
Forum: Civil Aviation
Topic: Did the 737 MAX go one step too far?
Replies: 232
Views: 33276

Re: Did the 737 MAX go one step too far?

2. On the 737-Max -- MCS goes even further and applies trim nose-down in the low-speed, high AOA flight regime because the flight control system, and the stab, may not have the authority for the pilots to adaquetly recover from this situation when a stall approaches. So does the STS in the 737NG. N...

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by 7BOEING7
Tue Dec 11, 2018 6:36 pm
Forum: Technical/Operations
Topic: B767 why set Flap lever 1 on QRH drill?
Replies: 3
Views: 1230

Re: B767 why set Flap lever 1 on QRH drill?

In the LE SLAT ASYMMETRY procedure there is a note that the autothrottle may disconnect during alternate flap extension -- at this point the flap handle is already positioned out of UP. The HYDRAULIC SYSTEM PRESSURE (C only) checklist is as stated above in the initial comment. Amazing how much we do...

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by 7BOEING7
Mon Dec 10, 2018 5:03 am
Forum: Technical/Operations
Topic: Manual flight handling characteristics of airliners
Replies: 74
Views: 9330

Re: Manual flight handling characteristics of airliners

The 737 was the most responsive and fun to fly. The 747 (all models) is a truck. The 777 inspite of its size was just like a 757, fairly light.

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by 7BOEING7
Sun Dec 09, 2018 6:49 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

How do you know AoA would not impact altitude on 737 Max?! Of course AOA affects altitude... are you climbing, descending, etc. However, that does not normally lead to pilots (or people) questioning their altitude instruments.... It is all speculative at this point: But, what if there really were o...

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by 7BOEING7
Thu Dec 06, 2018 4:06 pm
Forum: Civil Aviation
Topic: 787 Production/Delivery Thread - 2018
Replies: 1176
Views: 309166

Re: 787 Production/Delivery Thread - 2018

In the two pictures that CassidysVacay posted in post# 1071, the front landing gear doors are different in the two planes, and the rear landing gear are tipped back on Etihad, and forward on United, are they just in a different part of the landing phase? It almost seems like the United plane is not...

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by 7BOEING7
Wed Dec 05, 2018 1:11 am
Forum: Civil Aviation
Topic: Reuters: Lion Air ponders cancellation of 737 MAX orders
Replies: 156
Views: 29882

Re: Reuters: Lion Air ponders cancellation of 737 MAX orders

Your only difference is quite a big difference. And an attentive pilot still has 2 ways to override the latch. One way is literally at their finger tips. IF they have been trained to do it, and informed they could; which the AA & WN Pilot Unions say they have not. Key word in that sentence &quo...

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by 7BOEING7
Wed Dec 05, 2018 12:14 am
Forum: Civil Aviation
Topic: Boeing 777X Production Thread 2018
Replies: 309
Views: 84471

Re: Boeing 777X Production Thread 2018

I believe engines are delivered shortly before installation is to be done. There's a name for the process of deliveries that prevents the company from having to store engines while waiting for the airframe to be ready for it, but I can't remember what it is. JIT applies for production delivery part...

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by 7BOEING7
Tue Dec 04, 2018 4:09 pm
Forum: Civil Aviation
Topic: Reuters: Lion Air ponders cancellation of 737 MAX orders
Replies: 156
Views: 29882

Re: Reuters: Lion Air ponders cancellation of 737 MAX orders

I have a question...does the runaway trim problem exist in all aircraft? If so, how common is the occurrence of it? All Boeing airplanes 727 (707 too old for me) and on have a procedure related to a "runaway/unscheduled/movement without a signal" stabilizer. The 747(pre -400)/757/767 have...

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by 7BOEING7
Mon Dec 03, 2018 11:22 pm
Forum: Civil Aviation
Topic: Updated: Sir Tim Clark: Emirates next batches of A380s will be powered by RR
Replies: 595
Views: 93199

Re: Updated: Sir Tim Clark: Emirates next batches of A380s will be powered by RR

In service engine knowledge is phenomenal, allowing maintenance contracts to be priced extremely accurately (other than when design defects appear). Maintenance costs are not linear, which is why de-rates can be rewarding for the engine owner and operator. Some owners take this to the nth degree, w...

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by 7BOEING7
Mon Dec 03, 2018 7:53 pm
Forum: Civil Aviation
Topic: Boeing 777 Production/Delivery Thread 2018
Replies: 281
Views: 74748

Re: Boeing 777 Production/Delivery Thread 2018

Emirates 77W A6-EQP has been delivered Boeing 777-300 42363 1577 A6-EQP Emirates delivery 30 Nov 2018 PAE-DXB https://twitter.com/FlightIntl/status/1068861770809450496 It's another fake news blog. They are also quoting it as their final frame just like many other blogs and websites yet 5 seconds on...

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by 7BOEING7
Sat Dec 01, 2018 6:07 pm
Forum: Civil Aviation
Topic: 787 Production/Delivery Thread - 2018
Replies: 1176
Views: 309166

Re: 787 Production/Delivery Thread - 2018

In the two pictures that CassidysVacay posted in post# 1071, the front landing gear doors are different in the two planes, and the rear landing gear are tipped back on Etihad, and forward on United, are they just in a different part of the landing phase? It almost seems like the United plane is not...

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by 7BOEING7
Wed Nov 28, 2018 3:53 pm
Forum: Civil Aviation
Topic: El Al Plane Takeoff. at Stall Speed After FMC Input Mistake
Replies: 47
Views: 12799

Re: El Al Plane Takeoff. at Stall Speed After FMC Input Mistake

Generally you don't put in a fuel quantity, it does that automatically. What the article says is they put in the wrong zero fuel weight (ZFW) which is the weight of everything else but the fuel -- empty airplane, passengers, baggage, etc. One pilot is supposed to cross check the other pilot's inputs...

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by 7BOEING7
Tue Nov 27, 2018 8:43 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

Just wanted to see if I'm missing something - If we assume the pilots incorrectly thought they'd addressed the runaway trim by pulling back on the column - as would have worked in previous iterations of the aircraft - then essentially they were in a tug of war and eventually they lost. Meaning the ...

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by 7BOEING7
Mon Nov 26, 2018 6:04 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

There are several changes to the system functions and now the handling of how you use the two Cutout switches with their functionality swapping places. I would be really concerned with the functionality swapping places on something sitting that low and back = ie you switch it from simulator memory ...

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by 7BOEING7
Sat Nov 24, 2018 8:11 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

7b - Flaps selected like a low level stall recovery Where did that come from? Is that in the procedures anywhere? I don't remember Boeing ever training that unless it's a new technique. Looking more and more like the pilots were handed a can of worms by maintenance and didn't follow proper procedur...

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by 7BOEING7
Thu Nov 22, 2018 9:29 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

That the MCAS can be triggered by a single failure (?) is more of an issue and looks like that will be corrected. I would also look at the underlying implication of center of lift shifting. That is where shit may hit the fan. Don't know why. MCAS was certified to correct an issue on the MAX, they'r...

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by 7BOEING7
Thu Nov 22, 2018 8:50 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

The yoke pitch position constantly changed throughout the fateful flight, with lots of nose up trim inputs (to counter pitch down STS/MCAS). Left stick shaker was on throughout, except for a few seconds during the initial dive after take off, which happened when the aircraft was in clean config. St...

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by 7BOEING7
Wed Nov 21, 2018 3:28 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

Don't listen to voices:) They are built from scratch 737-8MAX sims. Here is one: https://www.trusimulation.com/sites/default/files/_images/content/blurred_boeing737maxspecsheetimg_tru12de16-11.jpg https://www.trusimulation.com/sites/default/files/_images/content/tru12de16-6.jpg Link: https://www.tr...

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by 7BOEING7
Tue Nov 20, 2018 3:48 pm
Forum: Technical/Operations
Topic: Is it legal to have two reg numbers on an aircraft?
Replies: 8
Views: 3189

Re: Is it legal to have two reg numbers on an aircraft?

Basically once an airplanes is painted the manufacturers have permission not to tape Airbus or Boeing registrations over the large numbers on the wing. Painted Airbus airplanes in production or experimental flight test will have the final customer registration painted on the wings and the Airbus Fre...

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by 7BOEING7
Mon Nov 19, 2018 6:46 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

I wonder if this might be an example of a crash where it’s in some people’s best interest if a CVR is not found? With the perceived blame pointing at Boeing right now, Lion Air might be better served if the CVR is never found because then there’s not an opportunity for the heroic pilots to become i...

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by 7BOEING7
Sun Nov 18, 2018 4:54 am
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

One thing I don't understand here is what happens if there are multiple inputs to trim system? The way AD goes, I don't quite understand what happens with the trim if there are multiple inputs. What happens if MCAS kicks in while yoke switches are used? MCAS seems to have a lot of authority, would ...

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by 7BOEING7
Sat Nov 17, 2018 4:02 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

"Elevated load factors" and "flaps up" to me says higher mach numbers than the flight radar data suggests . So it seems that load factor, mach, flaps setting, and angle of attack all feed into the flight computer to actuate this system. If mcas did activate, it seems to me that ...

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by 7BOEING7
Fri Nov 16, 2018 11:41 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

Frankly speaking, as long as stall recovery is part of training, MCAS should be part of it. Or Boeing should be consistent and recommend stall recovery not being trained as most 737MAX pilots would never be in a position to see it, ever!!! Most stall recovery training doesn't go any further than st...

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by 7BOEING7
Fri Nov 16, 2018 10:17 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

Is there any manual flight information in the Boeing MAX manual in case MCAS does not work? Like how to keep the nose manually away from a stall? Or is the MCAS-system expected to be working under all conditions, so pilots are not cautioned and not made aware? No, normal stall recovery procedures, ...

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by 7BOEING7
Fri Nov 16, 2018 1:21 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

First I hate to shock you but the 737NG has been flying with a similar system that trims the airplane nose down when approaching a stall for 20 years. But Boeing changed its behaviour on the MAX and decided not to tell anyone about it. :shock: Same behavior, different name. The MCAS nose down trim ...

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by 7BOEING7
Fri Nov 16, 2018 12:58 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

No MAX pilot in the world knows that when faced with an electric stab trim that is not responding as expected that they should disable the electric stab trim system completely by setting the stab trim switches to CUTOUT and fly using manual trim? There are hundreds+ of MAX pilots and tens of thousa...

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by 7BOEING7
Thu Nov 15, 2018 10:10 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

It isn't an esoteric discussion. It's failure analysis. It's called safety engineering. If you introduce an additional system, you must analyze all its possible failure modes. Or they create an airplane that doesn't need MCAS....... It is a VERY poor analogy, but what was wrong with driving cars be...

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by 7BOEING7
Thu Nov 15, 2018 10:06 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

Essentially it boils down to: The pilots had no need at that moment to know what was going on; they needed to pull back on the control column (the same as a hang glider pilot would push out on the control bar if his craft started nosing down or a super Cub pilot would pull back on the stick) which ...

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by 7BOEING7
Thu Nov 15, 2018 9:54 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

Not bad 3. The 737MAX, unlike earlier iterations of the 737, has a "maneuvering characteristics augmentation system" (MCAS) that attempts to prevent stalls when the pilots are flying manually, as opposed to using autopilot. Under these conditions, MCAS -- using data from the AOA sensors --...

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by 7BOEING7
Thu Nov 15, 2018 9:36 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

salttee wrote:
7BOEING7 and BoeingGuy are two different people.


My fault, sorry

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by 7BOEING7
Thu Nov 15, 2018 8:56 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

RandallStephens wrote:
Exactly where in the flight envelope does mcas protect?


"steep turns with elevated load factors and during flaps up flight at airspeeds approaching stall"

When the AOA went bad it generated information indicating their airspeed was at or approaching stall speed.

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by 7BOEING7
Thu Nov 15, 2018 8:47 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

Quick question:

Were there write ups on all three flights or just the one before the crash. When they read out the DFDR they said there were anomalies on all four flights but I haven't seen anything about writeups on the first two. Did I miss something?

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by 7BOEING7
Thu Nov 15, 2018 8:40 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

During our stall training on the NG, there is no trim down bias. . That's makes sense considering you execute the manueuver as soon as the stickshaker goes off. If you continued to pull back on the control column trying to stall the airplane you would see both the increase feel force and the nose d...

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by 7BOEING7
Thu Nov 15, 2018 8:16 pm
Forum: Civil Aviation
Topic: Updated: Sir Tim Clark: Emirates next batches of A380s will be powered by RR
Replies: 595
Views: 93199

Re: Updated: Sir Tim Clark: Emirates next batches of A380s will be powered by RR

From primary sources, not for the first time either: "747 Creating The World's First Jumbo And Other Adventures From A Life In Aviation" [originally all caps] Joe Sutter with Jay Spenser / Smithsonian Books pg 83: "The military C-5 program was doing something extremely important for ...

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by 7BOEING7
Thu Nov 15, 2018 7:20 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

I know there are some MAX customers that have yet to take delivery of their new jets , Alaska for instance..... Might AS decide to cancel their MAX orders , especially since they now have A321NEOS on property. I would also guess Lion Air might be reconsidering their Max order book as well. Isn’t th...

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by 7BOEING7
Thu Nov 15, 2018 7:15 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

So, I wonder if the Max, with all systems out except the RAT (if it has one) will glide decently to the nearest field. In other words would a guy like AC's Capt. Pearson be able to do his Gimli Glider thing? Or is this aircraft borderline unstable without all its electronic "helpers"? Doe...

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by 7BOEING7
Thu Nov 15, 2018 4:44 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

But don't you see the inherent problem of the computer pushing the nose into the ocean or the ground at low altitude, without the pilot's permission? That's my main point ..... at low altitude, you don't have much time for lengthy or repeated diagnostic trees.... and also, I would think that, even ...

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by 7BOEING7
Thu Nov 15, 2018 4:33 pm
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

I am not gonna get into myself inside B 738 MAX until Boeing fix this stall stupid system. Knowing my plane can be automatically driven down to the sea without pilot control is damn scariest thing. Especially within 5000 feet I'd stay away from 737NG's too then because they a similar system, differ...

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by 7BOEING7
Thu Nov 15, 2018 4:25 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

I know that on the Boeings I flew, pulling the yoke should cut the stab working against me. I also know that the cutout switches cut hydraulic power to the stab and prevent it from being moved again. Meaning that if it has gone too far by that stage, there's nothing much you can do. The 737 has a t...

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by 7BOEING7
Thu Nov 15, 2018 4:05 pm
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

NO!! Even Sullenberger while gliding his A320 to a ditching didn't know that envelope protections would cut him out of the loop -- as far as pitch was concerned he was just a passenger for the last 150ft or so. Nothing like moving the sidestick and nothing happens. That could have been interesting ...

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by 7BOEING7
Thu Nov 15, 2018 5:44 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

But don't you see the inherent problem of the computer pushing the nose into the ocean or the ground at low altitude, without the pilot's permission? That's my main point ..... at low altitude, you don't have much time for lengthy or repeated diagnostic trees.... and also, I would think that, even ...

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by 7BOEING7
Thu Nov 15, 2018 5:41 am
Forum: Civil Aviation
Topic: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots
Replies: 294
Views: 45465

Re: Boeing’s automatic trim for the 737 MAX was not disclosed to the Pilots

The “Data” guy may not have been too far of the mark -- he may just have been talking about the 737NG. The 737NG has a SMYD (Stall Management Yaw Damper) computer which during high AOA operations: 1) Reduces yaw damper commanded rudder movement, 2) Increases forward control column force to four time...

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by 7BOEING7
Thu Nov 15, 2018 5:29 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594300

Re: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang

The 737NG has a SMYD (Stall Management Yaw Damper) computer which during high AOA operations: 1) Reduces yaw damper commanded rudder movement, 2) Increases forward control column force to four times normal force thru the elevator feel module and 3) STS (Speed Trim System) trims the stabilizer nose d...

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