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BoeingVista
Posts: 2060
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 3:36 am

GE Aviation is recalling four GE9X powerplants from Boeing to address a previously disclosed engine compressor issue that already forced Boeing to delay the 777X's first flight.

Ohio-based GE Aviation confirms it is shipping four "compliance engines" to its Ohio facilities. Compliance engines are those that will power 777Xs during Boeing's flight tests.

"The GE9X engines are the compliance engines that will be returned for the high-pressure compressor hardware enhancements that GE revealed at the Paris air show," the company tells FlightGlobal. "GE Aviation remains aligned with Boeing on this effort as we work toward first flight" of the 777X.

Boeing did not immediately provide comment.


The Flight test engines will have a huge amount of extra instrumentation on them so easier I guess to tear them down and rebuild than build new units.

This does however mean that Boeing is going to have to wear the embarrassment of having 777-9's parked up rocking concrete blocks hanging from their engine pylons.
BV
 
jimmy9irons
Posts: 38
Joined: Fri Jan 14, 2011 4:28 pm

Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 3:51 am

How do they ship an engine as large as the GE9-X?
 
RickNRoll
Posts: 1868
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 3:53 am

Sounds like the Antonov.
 
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BoeingVista
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 3:59 am

RickNRoll wrote:
Sounds like the Antonov.


Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.
BV
 
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Erebus
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 4:28 am

BoeingVista wrote:
RickNRoll wrote:
Sounds like the Antonov.


Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.


There we have it. GE can't keep everything away from the public eye.
 
majano
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 7:36 am

BoeingVista wrote:
GE Aviation is recalling four GE9X powerplants from Boeing to address a previously disclosed engine compressor issue that already forced Boeing to delay the 777X's first flight.

Ohio-based GE Aviation confirms it is shipping four "compliance engines" to its Ohio facilities. Compliance engines are those that will power 777Xs during Boeing's flight tests.

"The GE9X engines are the compliance engines that will be returned for the high-pressure compressor hardware enhancements that GE revealed at the Paris air show," the company tells FlightGlobal. "GE Aviation remains aligned with Boeing on this effort as we work toward first flight" of the 777X.

Boeing did not immediately provide comment.


The Flight test engines will have a huge amount of extra instrumentation on them so easier I guess to tear them down and rebuild than build new units.

This does however mean that Boeing is going to have to wear the embarrassment of having 777-9's parked up rocking concrete blocks hanging from their engine pylons.

With my non-existent knowledge of engines or flight testing / certification, I wonder whether this development is good or bad? Perhaps good/bad may sound too judgemental. In other words, is this something that was planned when the delay of first flight to 2020 was announced or did GE, initially, expect to install the repaired parts at Boeing's facilities?
 
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Stitch
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 1:27 pm

majano wrote:
In other words, is this something that was planned when the delay of first flight to 2020 was announced or did GE, initially, expect to install the repaired parts at Boeing's facilities?


Based on the work involved, it would likely need to be done at a GE facility and not "in the field".
 
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Revelation
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 1:32 pm

Erebus wrote:
BoeingVista wrote:
RickNRoll wrote:
Sounds like the Antonov.


Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.


There we have it. GE can't keep everything away from the public eye.

It's perfectly consistent with what GE has already said in the past, that they are making new components and will be installing them in all of the 777x flight test engines.

Why would they want/need to keep this "away from the public eye"?
Wake up to find out that you are the eyes of the world
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Wake now, discover that you are the song that the morning brings
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BoeingVista
Posts: 2060
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 2:43 pm

majano wrote:
With my non-existent knowledge of engines or flight testing / certification, I wonder whether this development is good or bad? Perhaps good/bad may sound too judgemental. In other words, is this something that was planned when the delay of first flight to 2020 was announced or did GE, initially, expect to install the repaired parts at Boeing's facilities?


I'd guess its part of the process. In practical terms no MRO is licenced to work on a GE9X yet anyway so it would have to be RTB.

Stitch wrote:
Based on the work involved, it would likely need to be done at a GE facility and not "in the field".


Splitting a flight test engine on site would be a no no
Last edited by BoeingVista on Wed Aug 21, 2019 3:03 pm, edited 1 time in total.
BV
 
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Erebus
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 2:54 pm

Revelation wrote:
Erebus wrote:
BoeingVista wrote:

Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.


There we have it. GE can't keep everything away from the public eye.

It's perfectly consistent with what GE has already said in the past, that they are making new components and will be installing them in all of the 777x flight test engines.

Why would they want/need to keep this "away from the public eye"?


Ah right. So, I was wrong then.
 
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zeke
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 5:56 pm

BoeingVista wrote:
RickNRoll wrote:
Sounds like the Antonov.


Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.


How did they get there in the first place ?
Human rights lawyers are "ambulance chasers of the very worst kind.'" - Sky News
 
Spetsnaz55
Posts: 183
Joined: Wed Feb 20, 2019 2:38 am

Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 5:59 pm

zeke wrote:
BoeingVista wrote:
RickNRoll wrote:
Sounds like the Antonov.


Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.


How did they get there in the first place ?


Antonov
 
nycbjr
Posts: 215
Joined: Wed Aug 22, 2007 6:45 am

Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 6:06 pm

Spetsnaz55 wrote:
zeke wrote:
BoeingVista wrote:

Yup, this was revealed due to Antonov needing to make a public filing in order to fly an intra US route. Engines will be carried in an AN-124, its in the article.


How did they get there in the first place ?


Antonov


I was thinking this same thing. How will they get there for production??
 
Spetsnaz55
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 6:17 pm

nycbjr wrote:
Spetsnaz55 wrote:
zeke wrote:

How did they get there in the first place ?


Antonov


I was thinking this same thing. How will they get there for production??


https://www.aviation24.be/airlines/volg ... -airlines/
 
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ssteve
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 6:18 pm

Maybe for production it's rail shipped? Fan separate from core? I assume that's how the GE90 gets there.
 
Spetsnaz55
Posts: 183
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 6:23 pm

ssteve wrote:
Maybe for production it's rail shipped? Fan separate from core? I assume that's how the GE90 gets there.


Once again, they are brought by antonov. I have seen them land and unload here in everett
 
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Stitch
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Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 6:28 pm

The GE90 can be disassembled to a fan section and core section and I believe both will fit on a 747 freighter. I have seen the two sections being trucked up I-405 from the SEA area to PAE.

Complete GE90 units need to be delivered via an An-124 and I have seen those "drop-shipped" via such a method to PAE.

Considering the larger fan diameter of the GE9X, I do not know if it can be disassembled and loaded into a 747 freighter or if they will always be shipped as a complete set via An-124.
 
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ssteve
Posts: 1392
Joined: Fri Dec 02, 2011 8:32 am

Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 9:27 pm

Spetsnaz55 wrote:
ssteve wrote:
Maybe for production it's rail shipped? Fan separate from core? I assume that's how the GE90 gets there.


Once again, they are brought by antonov. I have seen them land and unload here in everett


Yeah, you said that. Nonetheless-- All of them? That's the production plan? That's how ALL the GE-90s get there? Seeing an An-124 unloading engines is one thing, but that doesn't make it a long term plan. For instance, they were used to move 787 engines to CHS, but that sounded like a surge, not a long term plan.
 
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AECM
Posts: 313
Joined: Wed Jun 27, 2007 2:52 am

Re: Confirmed: 777X First Flight Delayed Due GE9X Issues

Wed Aug 21, 2019 9:43 pm

Stitch wrote:
The GE90 can be disassembled to a fan section and core section and I believe both will fit on a 747 freighter. I have seen the two sections being trucked up I-405 from the SEA area to PAE.

Complete GE90 units need to be delivered via an An-124 and I have seen those "drop-shipped" via such a method to PAE.

Considering the larger fan diameter of the GE9X, I do not know if it can be disassembled and loaded into a 747 freighter or if they will always be shipped as a complete set via An-124.
The GE9X disassembled to fan and core section fit on a B77F so it should also fit on the B747. Lufthansa Technik did a trial test with a mockup GE9X (maybe the one that was displayed at PAS2019).
 
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FLALEFTY
Posts: 725
Joined: Tue Jan 31, 2006 11:33 am

Blancolrio's (Juan Brown) explanation of the 777X's GE9X issue

Sat Sep 21, 2019 12:49 am

https://www.youtube.com/watch?v=UWEPZtA ... ploademail

For those who don't know, Juan Brown is a 777 pilot (currently on medical leave) who has been using his wife's YouTube channel (hence the strange name for the channel) to post videos about goings on in the commercial and general aviation world. Some of you may have watched his videos covering the 737MAX grounding situation. But here he gives a very clear and concise explanation of the GE9X's stator vane problem and how GE is progressing with the vane redesign and rework.
 
Scotron12
Posts: 485
Joined: Fri Mar 01, 2019 2:13 pm

Re: Blancolrio's (Juan Brown) explanation of the 777X's GE9X issue

Sat Sep 21, 2019 5:47 am

He's not optomistic on the engine being certified by middle of 2020, is he?

And whoever posted on twitter that the "repairs" were complete and engines getting shipped back to Boeing....wishful thinking I guess.
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