RR Trent 1000- Ten -900 Issues and News

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RC20
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RR Trent 1000- Ten -900 Issues and News

Post by RC20 » 15 Jun 2018, 22:50

I thought this topic was well worth having its own for, the issue is not only on going, its spread and into areas that might not be obvious (Trent 900)

https://www.seattletimes.com/business/b ... d_business

It seems to have started with the 900. Despite is reputation for the 3 spool economics and benefits, the ME 3 elected to go with P&W GP 7000. The GP by all right should have been a second choice as it was an integration engine and at best it usually takes time to get it right.

The next one was more direct but obscured. The Trent 1000 failed to deliver its specifications (GE did as well though its a design choice that has that negative aspect to it (RR has the same issue on the RR 777 engines that is ensured not to manifest now by throttle thrust to clear out the ice if its built up)

What has emerged is that RR only a couple years in began to design a 75% new engine for the 787, to be called the 10. In the engine world, that is a vote of failure that its not worth trying to fix (they did use some of the elements form the 1000). So they gave up on the 1000 (which while supported will no longer be produced.

Then the blades corrosion issue began and they replaced the blades throughout the fleet.

That's been followed by IPC blade cracks and a number of emergency landings and diversions.

RR now says its a undetected harmonic in the flow patch.

As the Trent 7000 is a bleed air version of the Ten, those two are linked and the A330NEO has been delayed as there to have been problems and the 7000 was delayed. Despite virtually an all new engine with the latest tech inserts from the XWB, the fuel improvement was only 3% (and it had smoke issues in some thrust settings they had to get a waiver for, first I have heard of that occurring in a program_)

Any new engine should easily give you 5% improvement.

They are not sure now if those design elements from the 1000 are going to be an issue in the Ten and 7000. Keeping in mind this has developed over a pretty wide range of years now.

When RR got the current lot of A380 they promised big savings to Emirates (suddenly it was 5% better than the GP of which is was 2-3% behind.

While obscure, they had problems with it before it went on the first A380 and they now to have blade issues though those have not been stated as to what.

Emirates looks to be returning to the GP for their next group of A380s.

Some 40+ 787s have been grounded over the lack of engines. Norwegian is going to retrofit their 787-9s with Tens (leaving the 1000s for the -8 which probably allows a thrust reducing and better (easier on engine) less impact on fuel use)

3 Spool designs are more costly due to parts, the return has to be in better on wing performance (longevity) as well as fuel burn. GE and PW have surpassed that advantage with two spool. Cost to overhaul a 3 spool is more costly and you need to get a fuel burn and longevity return to overcome those added costs.

It seems the 3 spool is now a dead end as flows get more advanced either you can't model that well or its got limitations with older cooler engine ops.

Regardless RR is in a world of hurt and we don't know yet how the XWB is going to fare as the cracks vs the corrosion issue took something around 5 years to show up.

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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 15 Jun 2018, 23:25

Rolls-Royce believes the number of aircraft withdrawn from operations over Trent engine issues is starting to decline from current 44, without reaching its previous estimate of 50.

But, as you said, Rolls-Royce is still in a world of hurt!
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RC20
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Re: RR Trent 1000- Ten -900 Issues and News

Post by RC20 » 16 Jun 2018, 00:43

This is quite a bit more info that I have been looking for.

https://www.compelo.com/rolls-royce-what-went-wrong/

I can't imagine anyone making an RR choice on a 787 and the 797 if it comes to be is going to be GE for the safe and P&W for the more advanced engine.

Stock is up, you have to love how delighted the investors are when people loose their jobs, not looking at they got here how and killing jobs in the middle of a scramble is going to work out how?

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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 01 Jul 2018, 22:29

EASA plans to order Trent 1000 turbine cover replacements for B787 operators, after finding that the cover plate “may have a safe life below its declared safe cyclic life”.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 04 Jul 2018, 19:11

sn26567 wrote:
01 Jul 2018, 22:29
EASA plans to order Trent 1000 turbine cover replacements for B787 operators, after finding that the cover plate “may have a safe life below its declared safe cyclic life”.
FAA / EASA issued safety bulletins of RollRoyce Trent 1000 engines for all Boeing 787-800 and -900 aircraft in response to a number of increased vibration incidents while in airline revenue operation.

http://avherald.com/h?article=4b77235d
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 16 Jul 2018, 18:07

Rolls-Royce reportedly plans to offer airlines maintenance credits, limiting direct compensation for grounding B787s, in a bid to minimise the impact of unexpected wear issues on cash flow.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 18 Jul 2018, 19:11

ANA All Nippon Airways to cancel 378 domestic flights operated by B787s during August 2018 to accommodate mandatory inspections on their RR Trent 1000 engines.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 03 Sep 2018, 23:26

Norwegian Air UK recently extended Wamos Air (Spain) A330-200 operations from London Gatwick to Ft Lauderdale, into January 2019, replacing B787-9.

And in another topic, you have all read that British Airways 787-9s are replaced by Air Belgium A340s on the LHR-CAI route.

All because of the same issue!
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 12 Jan 2019, 21:56

Rolls-Royce has developed a redesigned intermediate pressure compressor blade for its Trent 1000 engines, which addresses durability issues on Package C engines. Entry into service of the already certified new blade will take place on a phased basis as production ramps up.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by Passenger » 20 Jan 2019, 13:06

"...On Thursday 17th Jan 2019, an All Nippon Airways Boeing 787-8 performing flight NH-985 from Tokyo Haneda to Osaka, landed on Itami's runway 32L, touched down, the crew deployed the thrust reversers when both engines (Trent 1000) rolled back and shut down. The aircraft rolled out without further incident, came to a stop about 2450 meters/8030 feet down the runway and was disabled. The aircraft was towed off the runway about 40 minutes after landing...."

Source - more info:
http://avherald.com/h?article=4c2fe53a&opt=0
Aircraft JA825A...
https://www.flightradar24.com/data/airc ... a#1f33bb32
...being towed to the gate:
https://www.youtube.com/watch?v=gjV4-fMpKD4

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Re: RR Trent 1000- Ten -900 Issues and News

Post by pitrixplanespotting » 20 Jan 2019, 13:28

Passenger wrote:
20 Jan 2019, 13:06
the crew deployed the thrust reversers when both engines (Trent 1000) rolled back and shut down.
That doesn't give much confidence... What if they really needed that thrust reversers :?

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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 11 Feb 2019, 19:04

British Airways was forced to ground one of its new B787s at London Heathrow for nearly a year because of problems with RR engines.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 02 Apr 2019, 21:01

The story is not over yet: Singapore Airlines has grounded two of its nine B787-10s due to Trent 1000 TEN engine issues — specifically premature blade cracking. A B787-9 operated by subsidiary Scoot is also being checked.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 11 Apr 2019, 12:29

Rolls-Royce agrees accelerated inspection regime with EASA as part of the response to earlier than anticipated High-Pressure Turbine blade deterioration identified in a small population of Trent 1000 TEN engine.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 03 May 2019, 23:07

Rolls-Royce Holdings has settled compensation claims with all the airline customers of its Trent 1000 engine that are likely to suffer flight disruptions over the next two years.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 07 Aug 2019, 22:17

Rolls-Royce may miss its 2019-end target of reducing to single digits the number of Boeing 787s grounded with Trent 1000 engine issues.

(And unrelated, Rolls-Royce said a build-up of inventory such as the Trent 7000 engine that powers the A330neo would unwind in 2H 2019 and drive a “significant improvement” in cash flow. Rolls Royce was on track to meet its guidance of US$854 million in cash flow this year.)
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 07 Nov 2019, 22:48

Rolls-Royce says progress in resolving Trent 1000 issues with only one major design fix remaining. Also, it improved high-pressure turbine blade for Trent 1000 TEN, with the final fundamental issue to address, but it is postponed to 2021.
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Re: RR Trent 1000- Ten -900 Issues and News

Post by sn26567 » 18 Nov 2019, 21:33

Air New Zealand is making some changes to its international schedule over summer 2019/20 (we are in the southern hemisphere!) as a result of ongoing global issues impacting some Trent 1000 TEN engines on its B787-9s. Further changes may also be required as the airline progresses the engine checks.
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