XWB
in service - 11 years
Posts: 16,115
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Post by XWB on May 29, 2017 10:48:04 GMT 1
After deliveries had basically stopped after the bearing issue, we are again seeing an increased P&W activity:
- IndiGo took delivery of 2 aircraft
- First 2 A321neo aircraft seen with engines
- Next Hong Kong Airlines test flying
- Next China Southern airlines test flying
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pi88re
Preparation for Convoy
Posts: 32 
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Post by pi88re on May 31, 2017 15:12:08 GMT 1
Modification to solve the #3 bearing issue is a software change and modification to the engine replacing an air pressure tube assembly. 902 was retrofitted over the weekend and the FL300 restriction was removed. The remaining aircraft 903/904 should be modified over the next few days. Today VT-ITK and VT-ITE also flew as high as FL360. Unfortunately, it seems that as of today these planes are still/again limited to fly at cruise level below FL300 eg. www.flightradar24.com/data/aircraft/vt-itk#d8d5a83Was the modification unsuccessful? |
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XWB
in service - 11 years
Posts: 16,115
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Post by XWB on May 31, 2017 15:16:04 GMT 1
Was the modification unsuccessful? What makes you believe VT-ITK and VT-ITE have been modified? Retrofitting the existing fleet could easily take 6 to 12 months. New aircraft deliveries have the fix, in-service aircraft will have to go out of service first. |
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pi88re
Preparation for Convoy
Posts: 32
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Post by pi88re on May 31, 2017 16:31:42 GMT 1
Was the modification unsuccessful? What makes you believe VT-ITK and VT-ITE have been modified? Retrofitting the existing fleet could easily take 6 to 12 months. New aircraft deliveries have the fix, in-service aircraft will have to go out of service first. I believed they had been retrofited. I might be wrong... But at least N902NK from Spirit was retrofited as mentioned by nkpilot in April, did flew normally for a while but now seems again to be FL300 limited... www.flightradar24.com/data/aircraft/n902nk/#d922581 |
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Post by Jkkw on Jun 5, 2017 2:01:23 GMT 1
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s543
in service - 2 years
Posts: 3,959
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Post by s543 on Jun 5, 2017 15:11:51 GMT 1
So it seems that all the current/past issues are solved !
The predicted 5-7% seems realistic (according to the fact they will use the principles already tested in the LEAP) and a
NICE number indeed.
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XWB
in service - 11 years
Posts: 16,115
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Post by XWB on Jun 5, 2017 16:02:48 GMT 1
So it seems that all the current/past issues are solved ! The biggest issue, the bearing failure, has been resolved. Another issue, early combustion chamber degradation, is currently being tested and should be fixed by Q4. |
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philidor
in service - 6 years
Posts: 8,950
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Post by philidor on Jun 5, 2017 16:48:58 GMT 1
The predicted 5-7% seems realistic (according to the fact they will use the principles already tested in the LEAP) and a NICE number indeed. From the outstart, the P&W engine was expected to have better middle-term improvement potential than the LEAP-1A, but this is the first time we read numbers. What is more, the type of changes they just announced may well be retrofittable, to the benefit of early customers. I would however wait for more detailed information before getting enthusiastic. |
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s543
in service - 2 years
Posts: 3,959
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Post by s543 on Jun 5, 2017 17:10:31 GMT 1
Well what I wanted to say by solved - is that they know what to do and the solution is in sight - which was not the case some time back !
Also we can now see that the GTF deliveries, completely stalled some time back are now going on.
It is interesting to hear that they have so much potential in the core.
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sciing
in service - 1 year
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Posts: 2,503
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Post by sciing on Jun 5, 2017 20:13:14 GMT 1
What is more, the type of changes they just announced may well be retrofittable Where do you read this? A new core (HP compressor, combustor and HP turbine) with higher pressure and temperature based on the use of new materials does not sound like a retrofit. |
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