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Revelation
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Re: Boeing 777X Testing/Production Thread - 2020

Wed Jan 29, 2020 8:34 pm

Now doing race track pattern north of Spokane..

https://www.flightradar24.com/BOE001/23b0deaf
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Lukas757
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Re: Boeing 777X Testing/Production Thread - 2020

Wed Jan 29, 2020 8:44 pm

Revelation wrote:
Now doing race track pattern north of Spokane..

https://www.flightradar24.com/BOE001/23b0deaf


The ground speed was under 150kts (sometimes as low as 100) for the last 10 minutes with altitude fluctuations. Are they doing stall tests?
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Wed Jan 29, 2020 9:12 pm

Is this a gear down flight?
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Thu Jan 30, 2020 4:31 pm

Another test scheduled for today
 
iamlucky13
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Re: Boeing 777X Testing/Production Thread - 2020

Thu Jan 30, 2020 6:05 pm

Lukas757 wrote:
Revelation wrote:
Now doing race track pattern north of Spokane..

https://www.flightradar24.com/BOE001/23b0deaf


The ground speed was under 150kts (sometimes as low as 100) for the last 10 minutes with altitude fluctuations. Are they doing stall tests?


I suppose it would be preferable to expand the low speed envelope as one of the first priorities, since you have to go slow before you can go fast.
 
MileHFL400
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 12:26 pm

Anything due for today?
Thanks and best Regards
AA
 
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qf789
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 1:12 pm

Forum Moderator
 
Oykie
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 4:33 pm

qf789 wrote:


They are so cool. :-)
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DenverTed
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 4:50 pm

qf789 wrote:

The four flap/aileron canoes on the outer wing are cool as well.
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 7:11 pm

N779XW in the air
 
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GEUltraFan9XGTF
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 7:30 pm

Why aren't we getting any more videos of take off/landing???

Also, you got wonder what fuel burn numbers they're seeing. I mean you can model it all day long but real numbers are coming in. Sort of the proof in the pudding as to whether it's a viable frame vs. A35K.
© 2020. All statements are my own. The use of my statements, including by journalists, YouTube vloggers like "DJ's Aviation", etc. without my written consent is strictly prohibited.
 
SDL
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 7:36 pm

I think we have to wait for real fuel Numbers for a While since they are flying slow and low now.
 
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par13del
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 7:39 pm

GEUltraFan9XGTF wrote:
Why aren't we getting any more videos of take off/landing???

Also, you got wonder what fuel burn numbers they're seeing. I mean you can model it all day long but real numbers are coming in. Sort of the proof in the pudding as to whether it's a viable frame vs. A35K.

Well since they operated a significant amount of time on the first flight with wheels down, the improvement in fuel burn from first to second flight should be staggering if they go wheels up.
 
OldAeroGuy
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 9:48 pm

GEUltraFan9XGTF wrote:
Why aren't we getting any more videos of take off/landing???

Also, you got wonder what fuel burn numbers they're seeing. I mean you can model it all day long but real numbers are coming in. Sort of the proof in the pudding as to whether it's a viable frame vs. A35K.


They need to expand the envelope and clear flutter before there will be any fuel mileage testing.

In addition, since the engines can have non-normal wear during stall testing, fuel mileage testing will probably be done on another airframe/engine.

Fuel mileage tests are probably at least a month away.

In addition, it’ll be quite sometime before there will be any public announcement of fuel mileage data.
Last edited by OldAeroGuy on Fri Jan 31, 2020 10:08 pm, edited 1 time in total.
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Stitch
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 9:55 pm

GEUltraFan9XGTF wrote:
Why aren't we getting any more videos of take off/landing???


Have to wait for the social media types to loiter around BFI to catch it and then upload their videos to YouTube, Twitter, et. al.

Weather in the area has been cold, blustery and wet so that might be keeping them inside. Once we get some sun with a nice shot of Mt. Rainier in the background, perhaps then. :biggrin:
 
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bikerthai
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 10:18 pm

Stitch wrote:
GEUltraFan9XGTF wrote:
Why aren't we getting any more videos of take off/landing???


Have to wait for the social media types to loiter around BFI to catch it and then upload their videos to YouTube, Twitter, et. al.

Weather in the area has been cold, blustery and wet so that might be keeping them inside. Once we get some sun with a nice shot of Mt. Rainier in the background, perhaps then. :biggrin:


Nah,

They did not appreciate the critique of their first flight hosts. So they want to make us wait a while so when they do release new photos, we would appreciate their work. :duck:

bt
Intelligent seeks knowledge. Enlightened seeks wisdom.
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Fri Jan 31, 2020 11:21 pm

OldAeroGuy wrote:
GEUltraFan9XGTF wrote:
Why aren't we getting any more videos of take off/landing???

Also, you got wonder what fuel burn numbers they're seeing. I mean you can model it all day long but real numbers are coming in. Sort of the proof in the pudding as to whether it's a viable frame vs. A35K.


They need to expand the envelope and clear flutter before there will be any fuel mileage testing.

In addition, since the engines can have non-normal wear during stall testing, fuel mileage testing will probably be done on another airframe/engine.

Fuel mileage tests are probably at least a month away.

In addition, it’ll be quite sometime before there will be any public announcement of fuel mileage data.

Yes. Fuel mileage is WH002. WH001 is to make sure the aircraft is airworthy, flying well and systems are working as expected
 
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qf789
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 1:38 am

Video of 777X taxiing by Museum of Flight after completing third flight

https://twitter.com/museumofflight/stat ... 99520?s=20
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GEUltraFan9XGTF
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 3:55 am

3rd flight landing and taxi:

https://youtu.be/thDkIogCRlA
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Aviator34ID
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 7:02 am

I am a bit of a late entrant to this thread. So are there just the two airframes completed at the moment? How many will be involved in the test program? What is the current production rate?
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 9:31 am

Aviator34ID wrote:
I am a bit of a late entrant to this thread. So are there just the two airframes completed at the moment? How many will be involved in the test program? What is the current production rate?

4 test frames. The 4 have been built, 1 and 2 have engines, the 3rd has its engines in Everett waiting for installation and the 4th will be set to Everett imminently
 
StTim
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 10:06 am

I presume frames 1 and 2 will be the most heavily instrumented, 3 will be used for cabin testing and 4 for route proving (in general obviously)
 
VV
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 1:00 pm

Opus99 wrote:
Aviator34ID wrote:
I am a bit of a late entrant to this thread. So are there just the two airframes completed at the moment? How many will be involved in the test program? What is the current production rate?

4 test frames. The 4 have been built, 1 and 2 have engines, the 3rd has its engines in Everett waiting for installation and the 4th will be set to Everett imminently


A lot of people think the delayed first flight has been a disaster to the certification schedule.

It is a setback, there is absolutely no doubt about it. However, the delay of the first flight makes the test flights "less staggered" and everything becomes a little bit more compressed for the FOUR flight test articles.

If there is no major event, in my opinion the aircraft should get certified in early 2021. It means the delay of the EIS is not as extensive as the first flight delay.
 
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PepeTheFrog
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 1:22 pm

VV wrote:
If there is no major event, in my opinion the aircraft should get certified in early 2021. It means the delay of the EIS is not as extensive as the first flight delay.


Unless the certification process gets changed a bit after the MAX fiasco with the FAA.

And Emirates requested an extended certification campaign that will last longer than the usual test phase.
Good moaning!
 
VV
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 2:54 pm

PepeTheFrog wrote:
VV wrote:
If there is no major event, in my opinion the aircraft should get certified in early 2021. It means the delay of the EIS is not as extensive as the first flight delay.


Unless the certification process gets changed a bit after the MAX fiasco with the FAA.

And Emirates requested an extended certification campaign that will last longer than the usual test phase.


What are you talking about "certification process" change?

Emirates can ask whatever they ask.
 
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bikerthai
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 3:13 pm

VV wrote:
Emirates can ask whatever they ask.


And if what ever they asked is beyond the signed contract, the they would have to renegotiate.

Whether Boeing will charge for the additional request or just eat the extra money thru pure goodwill, is another matter.

Changes to cert regulation, however is not negotiable.

bt
Intelligent seeks knowledge. Enlightened seeks wisdom.
 
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ER757
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 3:36 pm

Any word on when the 2nd aircraft will make its maiden flight?
 
Max Q
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 4:06 pm

There really doesn’t appear to be an upper anti collision light installed
The best contribution to safety is a competent Pilot.


GGg
 
VV
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 4:22 pm

bikerthai wrote:
VV wrote:
Emirates can ask whatever they ask.


And if what ever they asked is beyond the signed contract, the they would have to renegotiate.

Whether Boeing will charge for the additional request or just eat the extra money thru pure goodwill, is another matter.

Changes to cert regulation, however is not negotiable.

bt


Sorry, but I do not understand your statement. I really don't. Can you please be clearer. Thanks.
 
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RRUltrafan
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 4:49 pm

I wouldn't expect the fuel figures to be impressively low or anything though... It packs a higher fuel capacity than the 77W, but with a 100km drop in range from 13,649km down to 13,500km. Although I bet that the per seat fuel burn should be significantly lower
"Everything has an end, but, only the sausage has two" - Albert Einstein
 
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bikerthai
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 6:08 pm

VV wrote:
Sorry, but I do not understand your statement. I really don't. Can you please be clearer. Thanks.


When Emirates or any other airlines sign the contract for purchasing a plane, it is usually for a plane certified by the regulatory angencies, typically FAA, and local authorities. Typical contract do not go into details of how or what steps the certification must go through. So if Emirates wants something significantly different from what the FAA mandates to Boeing, then the contract must be updated.

In the past Boeing may placate the airlines with a gentlemen agreement, but I do not think that would hold today.

Now if the FAA changes the certification process to be more thorough, then it must be backed up by the regulations, and Boeing must comply and that certification will be covered under the Emirates contract.

On the flip side, if Emirates request the FAA for an extended test campaign, and the FAA agrees, then Boeing must comply and the contract need not be updated.

bt
Intelligent seeks knowledge. Enlightened seeks wisdom.
 
StTim
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 6:17 pm

bikerthai wrote:
VV wrote:
Sorry, but I do not understand your statement. I really don't. Can you please be clearer. Thanks.


When Emirates or any other airlines sign the contract for purchasing a plane, it is usually for a plane certified by the regulatory angencies, typically FAA, and local authorities. Typical contract do not go into details of how or what steps the certification must go through. So if Emirates wants something significantly different from what the FAA mandates to Boeing, then the contract must be updated.

In the past Boeing may placate the airlines with a gentlemen agreement, but I do not think that would hold today.

Now if the FAA changes the certification process to be more thorough, then it must be backed up by the regulations, and Boeing must comply and that certification will be covered under the Emirates contract.

On the flip side, if Emirates request the FAA for an extended test campaign, and the FAA agrees, then Boeing must comply and the contract need not be updated.

bt


I wonder if they will ask for proof against existing regulations for test conditions that the FAA consider grandfathered.

In that case they are just asking for proof of conformance.
 
Ishrion
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 6:20 pm

ER757 wrote:
Any word on when the 2nd aircraft will make its maiden flight?


It already few three times.

https://www.flightradar24.com/data/flig ... /#23a5b16c
 
upintheair2019
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Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 6:21 pm

Ishrion wrote:
ER757 wrote:
Any word on when the 2nd aircraft will make its maiden flight?


It already few three times.

https://www.flightradar24.com/data/flig ... /#23a5b16c


He was asking about the 2nd 777X (N779XX), not the first one (N779XW).


Sent from my iPhone using Tapatalk
 
Ishrion
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 6:29 pm

upintheair2019 wrote:
Ishrion wrote:
ER757 wrote:
Any word on when the 2nd aircraft will make its maiden flight?


It already few three times.

https://www.flightradar24.com/data/flig ... /#23a5b16c


He was asking about the 2nd 777X (N779XX), not the first one (N779XW).


Sent from my iPhone using Tapatalk


Oh. Misread that badly.
 
WIederling
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 6:48 pm

RRUltrafan wrote:
I wouldn't expect the fuel figures to be impressively low or anything though... It packs a higher fuel capacity than the 77W, but with a 100km drop in range from 13,649km down to 13,500km. Although I bet that the per seat fuel burn should be significantly lower


MTOW has the same ceiling ~353t

OEW is higher 20(+?)t
nominal payload is higher. 2..3t ?
That is quite a bit of "less fuel" available.

150t fuel ( incl reserves ) vs 130t on the 779 ?
17..19% less block fuel?

Back in time ferpe came up with 1+% better fuel burn per seat for the 779X
That was before the A35k got wing twist and sharklet size tuned.
Murphy is an optimist
 
VV
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 7:30 pm

bikerthai wrote:
VV wrote:
Sorry, but I do not understand your statement. I really don't. Can you please be clearer. Thanks.


When Emirates or any other airlines sign the contract for purchasing a plane, it is usually for a plane certified by the regulatory angencies, typically FAA, and local authorities. Typical contract do not go into details of how or what steps the certification must go through. So if Emirates wants something significantly different from what the FAA mandates to Boeing, then the contract must be updated.

In the past Boeing may placate the airlines with a gentlemen agreement, but I do not think that would hold today.

Now if the FAA changes the certification process to be more thorough, then it must be backed up by the regulations, and Boeing must comply and that certification will be covered under the Emirates contract.

On the flip side, if Emirates request the FAA for an extended test campaign, and the FAA agrees, then Boeing must comply and the contract need not be updated.

bt


Okay.

You misunderstood about the certification process, but it is okay because it is not easy to understand.
 
smartplane
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 7:35 pm

bikerthai wrote:
VV wrote:
Sorry, but I do not understand your statement. I really don't. Can you please be clearer. Thanks.


When Emirates or any other airlines sign the contract for purchasing a plane, it is usually for a plane certified by the regulatory angencies, typically FAA, and local authorities. Typical contract do not go into details of how or what steps the certification must go through. So if Emirates wants something significantly different from what the FAA mandates to Boeing, then the contract must be updated.

In the past Boeing may placate the airlines with a gentlemen agreement, but I do not think that would hold today.

Now if the FAA changes the certification process to be more thorough, then it must be backed up by the regulations, and Boeing must comply and that certification will be covered under the Emirates contract.

On the flip side, if Emirates request the FAA for an extended test campaign, and the FAA agrees, then Boeing must comply and the contract need not be updated.

EK, like most major customers, use their own sale / purchase template, which is constantly reviewed and updated, based on legal precedent, legislation, financial products and latest developments.

The Type Certificate reference was previously general / generic. For a US built aircraft it had to have an FAA-issued, unqualified TC, and for EU built, an EASA TC.

Now, the wording is more embracing, along the lines each aircraft must be delivered with a TC allowing global operation, sale and lease, without restriction.*

* excepting trade and other embargoes.

FAA and EASA are jointly reviewing the previously agreed X certification programme, so clearly they are on the same page. Unlikely FAA / EASA won't simultaneously (or within a few days) issue the X with a type certificate.

Customers, and especially financiers and insurers have become far less passive accepting compromised aircraft, a trend started by QR, and roundly criticised on here. QR won't accept delivery of aircraft with AD's or advisories, unless the OEM agrees definitive rectification dates, with failure triggering a cancellation event (aircraft can be returned for full credit less hours / cycles compensation). If multiple aircraft not rectified, the entire order can be cancelled (all aircraft returned for full credit less hours / cycles compensation).

What Boeing wanted to avoid with LH and EK, is triggering contract reviews. LH was always been seen as a Boeing fan boy, but a wake up call when they refused to accept a 748, then refused to accept a replacement, and insisted on activating buybacks and retrospective credits being topped up, as if all had been delivered.

EK are market savvy, but will want to secure additional concessions which can be shared as lessor compensation for A380 issues, especially if Boeing encouraged GE (to protect X orders) not to PiP, and even offer on the last two A380 orders, emboldening RR to cancel PiP's, shelve re-engine discussions and offer less attractive terms.
 
mjoelnir
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 7:47 pm

VV wrote:
bikerthai wrote:
VV wrote:
Sorry, but I do not understand your statement. I really don't. Can you please be clearer. Thanks.


When Emirates or any other airlines sign the contract for purchasing a plane, it is usually for a plane certified by the regulatory angencies, typically FAA, and local authorities. Typical contract do not go into details of how or what steps the certification must go through. So if Emirates wants something significantly different from what the FAA mandates to Boeing, then the contract must be updated.

In the past Boeing may placate the airlines with a gentlemen agreement, but I do not think that would hold today.

Now if the FAA changes the certification process to be more thorough, then it must be backed up by the regulations, and Boeing must comply and that certification will be covered under the Emirates contract.

On the flip side, if Emirates request the FAA for an extended test campaign, and the FAA agrees, then Boeing must comply and the contract need not be updated.

bt


Okay.

You misunderstood about the certification process, but it is okay because it is not easy to understand.


What you do not understand is, that the FAA certifies for use in the USA only. Of course a frame designed and build in the USA needs a FAA certification, but to be used outside the USA it needs the certification of the relevant authorities there. And if those authorities wants further test flights, Boeing has to comply if they want to sell frames there.
So if Emirates wants an extended test campaign, I imagine the UAE authorities will demand an extended test campaign.
 
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PepeTheFrog
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 8:26 pm

VV wrote:
What are you talking about "certification process" change?


Due to the MAX fiasco and everything associated with it, there's a good chance certification of new jetliners will be put under a microscope. And that might delay things a bit, something you might want to take into account.

Emirates can ask whatever they ask.


You're kicking an open door, that was really not the point. If the biggest customer asks for additional testing, Boeing will bend over. Which means additional certification time is required.
Good moaning!
 
smartplane
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 9:38 pm

PepeTheFrog wrote:
VV wrote:
What are you talking about "certification process" change?


Due to the MAX fiasco and everything associated with it, there's a good chance certification of new jetliners will be put under a microscope. And that might delay things a bit, something you might want to take into account.

Emirates can ask whatever they ask.


You're kicking an open door, that was really not the point. If the biggest customer asks for additional testing, Boeing will bend over. Which means additional certification time is required.

PTF, you are on the money.

Lead financiers are asking questions about airworthiness, to keep ahead of questions from funding participants. Unheard of pre-MAX.

Insurers are seeking 3rd party expert opinions about outstanding AD's. For example, where customers fail to meet airworthiness deadlines, and seek extensions, they are adjusting premiums and / or excesses. In some cases, a new AD itself may trigger reviews.

Boeing and GE will want no LH or EK hiccups, as these are two very influential early adopters. Both airlines will want near simultaneous FAA/EASA approval, something both airworthiness agencies will want as well. Both will have been meeting with their financiers and insurers, and have quite likely had joint meetings in respect to performance, news and deliveries, though price and penalties will be off the table. Boeing might not be quite as keen seeing customers and airworthiness authorities working together.

With the benefit of hindsight, who would have thought QR thoroughness would become the industry standard? Good on QR for setting high standards, and sticking to them.
 
xwb777
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 9:59 pm

Boeing will be flying a B779 to Dubai for hot weather testing in August.

Link: https://simpleflying.com/emirates-boeing-777x-tests/
Last edited by xwb777 on Sat Feb 01, 2020 10:02 pm, edited 1 time in total.
 
upintheair2019
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 10:01 pm

xwb777 wrote:
Boeing will be flying a B779 to Dubai for hot weather testing in August. I will find the link a post it here.


Sir Tim Clark confirmed this last November.

https://aeronewsglobal.com/boeing-will- ... xt-summer/


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oschkosch
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Re: Boeing 777X Testing/Production Thread - 2020

Sat Feb 01, 2020 10:43 pm

VV wrote:
PepeTheFrog wrote:
...
Emirates can ask whatever they ask.


You're kicking an open door, that was really not the point. If the biggest customer asks for additional testing, Boeing will bend over. Which means additional certification time is required.


I wanted to say Emirates can ask whatever they want, but it might not be done anyway. By then Tim Clark would have retired and in addition the 777-9 will be the biggest aircraft in production when the A380 delivery will stop in 2021.

What would they do? Oh yeah, replace A380 with A330neo.
would a threat of order cancellations fit into the equation? I think yes. Cash is king, especially for Boeing in their current state. They cannot allow for EK to be unhappy.

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bikerthai
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Re: Boeing 777X Testing/Production Thread - 2020

Sun Feb 02, 2020 2:02 am

mjoelnir wrote:
So if Emirates wants an extended test campaign, I imagine the UAE authorities will demand an extended test campaign.


Agreed. But then you get into governmental/trade politics. And things will get sticky.

bt
Intelligent seeks knowledge. Enlightened seeks wisdom.
 
flipdewaf
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Re: Boeing 777X Testing/Production Thread - 2020

Sun Feb 02, 2020 7:53 am

bikerthai wrote:
mjoelnir wrote:
So if Emirates wants an extended test campaign, I imagine the UAE authorities will demand an extended test campaign.


Agreed. But then you get into governmental/trade politics. And things will get sticky.

bt

But they do say every aircraft has 4 dimensions, length, width, height and politics. Nothing new here.

Fred


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Image
 
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qf789
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Re: Boeing 777X Testing/Production Thread - 2020

Sun Feb 02, 2020 12:25 pm

Please discuss the topic that being 777X testing and production and keep the off topic comments out of the discussion
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flipdewaf
Posts: 3712
Joined: Thu Jul 20, 2006 6:28 am

Boeing 777X Testing/Production Thread - 2020

Sun Feb 02, 2020 1:00 pm

VV wrote:

Didn't they ordered A350-1000 and then cancelled it?
What has fundamentally changed on the A350-1000 since then?



Poduction costs, market Size and dynamics, more defined and clarified and potentially improved performance data.

I think we will start to see a few more orders when the performance of the 779X begins to become more defined through the testing.

Fred


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morrisond
Posts: 2872
Joined: Thu Jan 07, 2010 12:22 am

Re: Boeing 777X Testing/Production Thread - 2020

Sun Feb 02, 2020 2:01 pm

flipdewaf wrote:
VV wrote:

Didn't they ordered A350-1000 and then cancelled it?
What has fundamentally changed on the A350-1000 since then?



Poduction costs, market Size and dynamics, more defined and clarified and potentially improved performance data.

I think we will start to see a few more orders when the performance of the 779X begins to become more defined through the testing.

Fred


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Hi Fred - Have you heard anything through the grapevine that it is better than spec?

You would have to think Boeing threw more resources at it once they started to figure out how capable and efficient the A351 was.

The Empty weight they ended up at is really going to be interesting (and where they could have made it lighter than we are guessing if they used lighter materials, 3D printed parts, and just better more iterative design using faster computers). You would also have to assume at launch they were using 787 Wing aero efficiency in their models which I hope they would have improved with basically another decade of design time.

Any rumours on where the engine is? Is at Spec or above or below?
 
Opus99
Posts: 1166
Joined: Thu May 30, 2019 10:51 pm

Re: Boeing 777X Testing/Production Thread - 2020

Sun Feb 02, 2020 4:11 pm

morrisond wrote:
flipdewaf wrote:
VV wrote:

Didn't they ordered A350-1000 and then cancelled it?
What has fundamentally changed on the A350-1000 since then?



Poduction costs, market Size and dynamics, more defined and clarified and potentially improved performance data.

I think we will start to see a few more orders when the performance of the 779X begins to become more defined through the testing.

Fred


Sent from my iPhone using Tapatalk


Hi Fred - Have you heard anything through the grapevine that it is better than spec?

You would have to think Boeing threw more resources at it once they started to figure out how capable and efficient the A351 was.

The Empty weight they ended up at is really going to be interesting (and where they could have made it lighter than we are guessing if they used lighter materials, 3D printed parts, and just better more iterative design using faster computers). You would also have to assume at launch they were using 787 Wing aero efficiency in their models which I hope they would have improved with basically another decade of design time.

Any rumours on where the engine is? Is at Spec or above or below?

It’s the OEW figures that I’m waiting for really, to see if they were able to shed off any weight
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