Search found 250 matches

by benbeny
Thu Jul 22, 2021 3:17 am
Forum: Civil Aviation
Topic: BA 787-8 Nosewheel collapse at LHR
Replies: 115
Views: 32472

Re: BA 787-8 Nosewheel collapse at LHR

Boeing should've designed that hole to be available for access by shorter person too, I think Boeing made questionable design choice this time. Plugging the other hole is simple, yet only lately implemented and with $2k price tag, while you can probably order that part wholesale from Chinese suppli...

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by benbeny
Wed Jul 21, 2021 12:30 pm
Forum: Civil Aviation
Topic: Minimum seat pitch
Replies: 31
Views: 4673

Re: Minimum seat pitch

Thank you for all of your feedbacks. To accommodate 95% of people based on study required 28"+ seat to seat distance, so basically the minimum limit for seat pitch based on anthropometric data is around 31", considering the thickness of slimline seat. Sub 30" will only accommodate 77%...

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by benbeny
Sun Jul 18, 2021 6:37 pm
Forum: Civil Aviation
Topic: Minimum seat pitch
Replies: 31
Views: 4673

Re: Minimum seat pitch

I'd rather see a defined standard that's required to be displayed while purchasing, so people can easily choose between 28" and 32" as they please. Right now it takes resources like SeatGuru and a bit of airplane nerdery to really know what you're getting in to. Pitch is a poor marker, th...

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by benbeny
Sun Jul 18, 2021 6:19 pm
Forum: Civil Aviation
Topic: BA 787-8 Nosewheel collapse at LHR
Replies: 115
Views: 32472

Re: BA 787-8 Nosewheel collapse at LHR

This is not true, both FAA/EASA issued an AD last year for the incorrect hole to be plugged following the same issue causing an Ethiopian 787 nose wheel to collapse, a copy of the AD is posted reply 55. If the AD had been carried out by BA, the mechanics stature would be irrelevant, only one hold w...

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by benbeny
Sun Jul 18, 2021 5:58 pm
Forum: Civil Aviation
Topic: TWA 800 lost 25 years ago July 17, 1996
Replies: 48
Views: 6771

Re: TWA 800 lost 25 years ago July 17, 1996

Didn't regulations post TWA accident affect MAX certification process?

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by benbeny
Sun Jul 18, 2021 5:52 pm
Forum: Civil Aviation
Topic: Air Baltic A223 - Both engines automatically shutdown on touchdown
Replies: 72
Views: 16166

Re: Air Baltic A223 - Both engines automatically shutdown on touchdown

In the case of QF32 the #1 engine, due to control wiring cut following the #2 engine failure, didn't get the request from the pilots to shut down, and it took an hour and lots of foam and water from the fire crew to bring it under control. In the present case the pilots did not request the engines ...

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by benbeny
Sun Jul 18, 2021 5:48 pm
Forum: Civil Aviation
Topic: Minimum seat pitch
Replies: 31
Views: 4673

Re: Minimum seat pitch

SQ22 wrote:
Thanks, please always provide a link to your source when stating facts.

I'm sorry, tried to edit but the time limit has apparently passed.

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by benbeny
Sun Jul 18, 2021 5:28 pm
Forum: Civil Aviation
Topic: Minimum seat pitch
Replies: 31
Views: 4673

Re: Minimum seat pitch

SQ22 wrote:
Can you please provide a link to the study, thanks.

Sure, here you are.
https://repository.lboro.ac.uk/articles/report/Anthropometric_study_to_update_minimum_aircraft_seating_standards/9353039
And it's 2001 study, my bad.

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by benbeny
Sun Jul 18, 2021 5:17 pm
Forum: Civil Aviation
Topic: Minimum seat pitch
Replies: 31
Views: 4673

Re: Minimum seat pitch

My main concern is not comfort actually, it's safety. Such a narrow seat pitch increases likelihood that your knees are pressed against the seatback in front of you, and I can never imagine that it's safe in emergency. And the ideal bracing position for taller people requires 35" seatback to se...

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by benbeny
Sun Jul 18, 2021 5:01 pm
Forum: Civil Aviation
Topic: Minimum seat pitch
Replies: 31
Views: 4673

Minimum seat pitch

Apologies if this has been discussed lately. Should govt regulate minimum seat pitch? I found a 2006 study titled "Anthropometric study to update minimum aircraft seating standards" that said: The dimensions of A, B and C are probably the most critical but the current minima need to be inc...

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by benbeny
Thu Feb 20, 2020 12:50 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 97846

Re: Boeing 737MAX Grounding, General Discussion Thread, February 2020

Excuse my ignorance, but can an airplane be stalled in 0 G or negative G maneuver? IIRC the plane won't need any lift in those kind of maneuver, but can the plane be stalled?

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by benbeny
Fri Feb 07, 2020 2:08 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, February 2020
Replies: 708
Views: 97846

Re: Boeing 737MAX Grounding, General Discussion Thread, February 2020

I’ve seen a lot of posts about trying to make an old design compete with regards to the max, but isn’t that what Airbus did with the neo? And the previous sharklet update? I’m genuinely just asking. Though the 737 is older. But Airbus didn't make theirs enter kamikaze mode just because one sensor g...

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by benbeny
Tue Jan 21, 2020 10:01 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, January 2020
Replies: 1740
Views: 195493

Re: Boeing 737MAX Grounding, General Discussion Thread, January 2020

With almost $20B, why didn't Boeing kill this ugly frankenplane back in June, when they knew that this mess will cost a lot?

At least they should slap a new gear, make the pylon longer, and add slides, thus avoiding MCAS requirements?

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by benbeny
Mon Jan 20, 2020 4:10 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, January 2020
Replies: 1740
Views: 195493

Re: Boeing 737MAX Grounding, General Discussion Thread, January 2020

Indeed. As I predicted March last year the MAX would NOT be flying by the end of 2019. And here we are. ANOTHER software "issue". Not to mention the trove of emails leaked recently that imply a major criminal cover up. Mark my words: the MAX ain't gonna fly for a LONG time, if EVER. Would...

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by benbeny
Fri Nov 15, 2019 1:23 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

I bet the air show flights were with MCAS off, otherwise, MCAS would go crazy with that climb. It’s quite a high deck angle but probably not all that high AoA. Fred Sent from my iPhone using Tapatalk Surely it would've been with flaps 1 and MCAS inactive?? Maybe not for the steep bank turns though?...

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by benbeny
Fri Nov 15, 2019 10:50 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

Why do we need to test fly a plane when we have immense computational power to simulate it? The short answer is because we *don't* have the computational power... and never will. All simulation is based on human interpretation of what actually tends to happen in nature in real life. Unless you can ...

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by benbeny
Thu Nov 14, 2019 1:20 pm
Forum: Civil Aviation
Topic: 737NG Pickle fork issue
Replies: 565
Views: 143785

Re: 737NG Pickle fork issue

Does that mean that already inspected planes have to be rechecked again? That must be truly annoying, and costly. Annoying yes, but fortunately the cost of inspection is small. The AD estimated 1 hour to do the check, and 1 hour to do the paperwork. As far as I can see, no panels need to be removed...

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by benbeny
Wed Nov 13, 2019 10:34 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

Why do we need to test fly a plane when we have immense computational power to simulate it?

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by benbeny
Tue Nov 12, 2019 5:45 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

I will fly the max anytime as I have confidence it's now safe, Boeing will not let it fly unless they are sure its safe. Sent from my SM-J415F using Tapatalk Seems a bit naive. Boeing insisted it was safe all up until the whole world had grounded the aircraft, including the FAA and announced by the...

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by benbeny
Mon Nov 11, 2019 9:09 pm
Forum: Civil Aviation
Topic: 737NG Pickle fork issue
Replies: 565
Views: 143785

Re: 737NG Pickle fork issue

It's costing airlines, but does Boeing have to compensate them ? One of the big claims of Boeing in regards to the 737NG was lower maintenance life cost than the A320. One or two pickle fork repairs and the cost of checking for it, with the associated down time, can have an influence on the cost of...

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by benbeny
Sun Nov 10, 2019 1:29 am
Forum: Civil Aviation
Topic: 737NG Pickle fork issue
Replies: 565
Views: 143785

Re: 737NG Pickle fork issue

Saying it from an engineering standpoint. The pickle fork is designed as a life time part, that is not supposed to crack ever. That is why it was not checked upon. That is why cracks were found by accident, not at an regular inspection. Do I have to make it simpler for you as an engineer? Sir I res...

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by benbeny
Fri Nov 08, 2019 3:43 am
Forum: Civil Aviation
Topic: 737NG Pickle fork issue
Replies: 565
Views: 143785

Re: 737NG Pickle fork issue

Two from lion air. This time both below 22,000 FC. Very bad news for Boeing. They’re all gonna have to get inspected. https://www.smh.com.au/business/companies/pickle-cracks-found-on-newer-737s-spark-fresh-calls-for-qantas-virgin-inspections-20191106-p53828.html The article also refers to Virgin Au...

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by benbeny
Tue Nov 05, 2019 2:30 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

Can we talk about Boeing/FAA/EASA test flights that are upcoming? Why not start a Max UNgrounding thread? All of you who are pilots, stewardesses, mechanics, etc whose jobs depend on the Max RTS can have uninterrupted discourse there. Simple. Because we're not sure yet that ungrounding is happening...

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by benbeny
Tue Nov 05, 2019 2:15 am
Forum: Civil Aviation
Topic: 737NG Pickle fork issue
Replies: 565
Views: 143785

Re: 737NG Pickle fork issue

Any info on P-8? Does the raked wingtip create differences? Or they've not hit 20k cycle mark yet? I don’t suppose they ever will.... I think they may not fly that much, but military planes usually stay longer in service than airlines ones. Besides P-8 sometimes fly low flying mission and stay in t...

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by benbeny
Mon Nov 04, 2019 4:49 pm
Forum: Civil Aviation
Topic: 737NG Pickle fork issue
Replies: 565
Views: 143785

Re: 737NG Pickle fork issue

Any info on P-8? Does the raked wingtip create differences?
Or they've not hit 20k cycle mark yet?

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by benbeny
Mon Nov 04, 2019 3:32 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

O'Leary said he is not sure to have any MAX back by summer 2020. That would put the return to service behind Q1 2020. This means behind the timeframe the Boeing CEO has said he would need to halt the MAX-production without renewed permit to fly. Is there something new brewing? Maybe he's talking ab...

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by benbeny
Mon Nov 04, 2019 5:26 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

So the airlines are to blame for not providing training for a feature that they weren't even aware of? They never asked Boeing to create a plane that only requires iPad training, they just stipulated that they pay less if training was required, which makes sense since they take on the cost of the t...

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by benbeny
Sun Nov 03, 2019 1:51 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

So, when will we start blaming airlines for being too cheap to provide at least 3 days class and two or three simulator sessions for conversion to MAX and asked Boeing to develop a plane that only requires 1 hour iPad reading? We blamed Boeing, and yes Boeing did something wrong, and we blamed airl...

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by benbeny
Sun Nov 03, 2019 6:47 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

So, when will we start blaming airlines for being too cheap to provide at least 3 days class and two or three simulator sessions for conversion to MAX and asked Boeing to develop a plane that only requires 1 hour iPad reading? We blamed Boeing, and yes Boeing did something wrong, and we blamed airli...

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by benbeny
Sat Nov 02, 2019 1:04 pm
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

Is it faster to load/unload with two aisles or a wider aisle? If an aisle is blocked you cannot just use the other one. Fred Sent from my iPhone using Tapatalk Twin aisle gives you redundancy, but in the end, the limiting factor is often the door size and how fast people walk down the bridge. How o...

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by benbeny
Sat Nov 02, 2019 12:23 pm
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

Is it faster to load/unload with two aisles or a wider aisle? If an aisle is blocked you cannot just use the other one. Fred Sent from my iPhone using Tapatalk Twin aisle gives you redundancy, but in the end, the limiting factor is often the door size and how fast people walk down the bridge. How o...

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by benbeny
Sat Nov 02, 2019 12:21 pm
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

Can't Boeing just give 737 new wings and taller landing gear, slap a new name, and call it a day? The A300, A310, A330 and A340 all used the same fuselage cross section with different fuselage lengths, wings sizes and landing gear heights. So it would be possible to use the 737 fuselage tube again ...

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by benbeny
Sat Nov 02, 2019 12:16 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

Depend if delay and cost define "global aviation design engineer standards". I admit that my view was only focused on the safety of the design. The features, safety, delay and cost are always very challenging to all get as initially expected. Especially on big projects, this is usually th...

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by benbeny
Sat Nov 02, 2019 5:00 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

PixelFlight wrote:
AirlineCritic wrote:
Shall we talk about the decline of global aviation design engineer standards? That is the real problem.
:?:
What indication show that this problem is not limited to the Boeing 737-8/9 MAX project ?


How about delays and cost runaways?

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by benbeny
Sat Nov 02, 2019 4:48 am
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

Can't Boeing just give 737 new wings and taller landing gear, slap a new name, and call it a day?

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by benbeny
Fri Nov 01, 2019 2:43 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

Veering away from the main discussion that's been ongoing in this thread somewhat, what does everyone make of the witness accounts from the Ethiopian crash claiming that the plane was smoking and rattling as it flew overhead? Could these just have been from exceeding Vmo, witnesses remembering thin...

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by benbeny
Fri Nov 01, 2019 2:05 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

One question: how tiring it is to constantly counter trim? Finger wise and brain wise?

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by benbeny
Wed Oct 30, 2019 4:49 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

Listen folks, lets take a poll right now: Keeping the Max out of the picture, would you book your wife as a passenger on an NG or any other line aircraft with a Lion Air crew? (I would not as there are serious doubts that the average LA crew could handle much of any curve ball the aircraft or the w...

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by benbeny
Wed Oct 30, 2019 4:46 pm
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

If Boeing doesn't act quickly, they'll be eaten up top and bottom by others. Remember that back then 737 was regional jet-sized aircraft (100-ish pax) and now growing to 200+ pax market? I'm more worried with regional jets that has much growing potential, like ERJ195 and A220. If Boeing don't act q...

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by benbeny
Wed Oct 30, 2019 3:44 pm
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

If Boeing doesn't act quickly, they'll be eaten up top and bottom by others. Remember that back then 737 was regional jet-sized aircraft (100-ish pax) and now growing to 200+ pax market? I'm more worried with regional jets that has much growing potential, like ERJ195 and A220. If Boeing don't act qu...

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by benbeny
Tue Oct 29, 2019 4:27 pm
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

Now, where's the "bet the company till you make it" of old Boeing? They bet the company with B-17, B-29, B-47, B-52, 367-80, C-135 and 707, and 747. Last time I saw such a huge gamble was when they made 747. Maybe the bean counters has prevailed there, and the engineering team died from d...

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by benbeny
Tue Oct 29, 2019 9:02 am
Forum: Civil Aviation
Topic: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement
Replies: 1049
Views: 156633

Re: Boeing NMA in doubt as customers push for all new 737MAX and 757 replacement

Now, where's the "bet the company till you make it" of old Boeing? They bet the company with B-17, B-29, B-47, B-52, 367-80, C-135 and 707, and 747. Last time I saw such a huge gamble was when they made 747. Maybe the bean counters has prevailed there, and the engineering team died from di...

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by benbeny
Tue Oct 29, 2019 8:12 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

On the second bolded part, do you not think it is a little simple to identify a runaway trim stabilizer when it is not continuously moving AND while you are dealing with two other disagreements with the instruments and a stick shaker at the same time? I think what is apparent with this flight and A...

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by benbeny
Mon Oct 28, 2019 5:27 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

One thing I might add, flu in Indonesia is usually mild. You'll get sore throat, runny nose, mild coughs, and sometimes low-grade fever. Not unusual to go to work (office work) mildly sick in Indonesia. But of course I won't want any sick pilots flying. Where I live we have what is called a "m...

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by benbeny
Mon Oct 28, 2019 4:43 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

One thing I might add, flu in Indonesia is usually mild. You'll get sore throat, runny nose, mild coughs, and sometimes low-grade fever. Not unusual to go to work (office work) mildly sick in Indonesia. But of course I won't want any sick pilots flying.

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by benbeny
Mon Oct 28, 2019 4:19 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

So we all know what's wrong. 1. Boeing designed a stupid system. 2. Boeing screwed up big time by not telling pilots about stupid system. 3. Regulatory oversight that left much to be desired. 4. Repair shop that didn't do something right. 5. Maintenance that didn't check AoA vane installation. 6. H...

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by benbeny
Mon Oct 28, 2019 3:11 am
Forum: Civil Aviation
Topic: Boeing 737MAX Grounded Worldwide Q4 2019, Production suspended
Replies: 5670
Views: 764641

Re: Boeing 737MAX Grounded Worldwide Q4 2019

So we all know what's wrong. 1. Boeing designed a stupid system. 2. Boeing screwed up big time by not telling pilots about stupid system. 3. Regulatory oversight that left much to be desired. 4. Repair shop that didn't do something right. 5. Maintenance that didn't check AoA vane installation. 6. Ha...

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by benbeny
Fri Feb 16, 2018 6:37 pm
Forum: Technical/Operations
Topic: Airline customer codes question
Replies: 27
Views: 2927

Re: Airline customer codes question

So, what does the customer code actually mean? Different configs, perhaps? But, I bet Boeing can do just fine without those numbers. Look at 787, for example.

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by benbeny
Fri Feb 16, 2018 6:33 pm
Forum: Civil Aviation
Topic: Airbus might push A320 family production rate to 70 aircraft per month
Replies: 142
Views: 18099

Re: Airbus might push A320 family production rate to 70 aircraft per month

How in the world they're able to find enough pax (and airports) for that amount of new planes every month? Even with ultra-rapid growth of LCC in Asia and other places, I don't see enough pax to fill them up. The market will soak up eventually, and the growth will slow down. And let's not talk about...

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