Air NZ 787 Trent 1000 engine 'issues'.

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amiga500

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#225925 11-Dec-2017 20:04

https://www.stuff.co.nz/travel/travel-troubles/99660315/photos-air-nzs-damaged-787-engine

It would be good if Air New Zealand took these photos and released them to the media. It would show that they are being open about the problem. Anyone know if these were official Air NZ photos or leaked by a staff member?

But are they really on top of the problem? ANA grounded a whole lot of those 787s a long time ago - and got them fixed. Assuming that the engines on the 787 are the original ones the 'good one' may have had a similar amount of corrosion on the turbine blades. While very very unlikely there is a chance that the other engine could have failed as well. Not so good if you're on a five hours plus ETOPS route such as the one to Argentina. A more likely scenario would have been a failure half-way into the flight & a very long way to go on one engine.

I remember when the 777 was introduced Boeing had to do a lot of work to convince the FAA to grant them three hours' ETOPS & now we have aircraft such as the 787 with five hours ETOPS & problems with both types of engines being used. (Rolls Royce and GE)

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#1916950 11-Dec-2017 20:04

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alasta

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#1916953 11-Dec-2017 20:10

It is not unprecedented to lose two engines on an ETOPS aircraft. You may recall the accident that BA had where both engines on a 777 failed simultaneously on approach because the engines were prone to failure of the fuel/oil exchanger in specific conditions. They were very lucky not to have any fatalities there.

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#1916954 11-Dec-2017 20:15

Probably because those photos would scare the hell out of some people who are already not that comfortable about flying.

amiga500

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#1916955 11-Dec-2017 20:20

alasta:

It is not unprecedented to lose two engines on an ETOPS aircraft. You may recall the accident that BA had where both engines on a 777 failed simultaneously on approach because the engines were prone to failure of the fuel/oil exchanger in specific conditions. They were very lucky not to have any fatalities there.

I remember that one! If I remember correctly the accident investigation concluded that the pilots used exactly the right amount of flaps to get the 777 to the grassed area.

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#1916982 11-Dec-2017 20:31

My favourite one is the BA9 742 and 4 engines lost well before the 789 engine issue

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andrewNZ

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#1916983 11-Dec-2017 20:33

The blades have been damaged by something specific, it has been wedged in there and chewed them up. It will probably be obvious to them what it is, and it will likely be obvious why.

Good work @PeterReader , You're not advertising guns on a mass shooting article, but you're getting there :-)

Oblivian

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#1916985 11-Dec-2017 20:35

It does appear they are now being super proactive. The repair scheme has been on for over a year now. Surprised it's taken the sign of issues on 2 of ours for them to be fast tracked. Ambulance at the bottom of a hill..

9H-FOX landed in AKL tonight from HiFly wet-leasing to cover one of the outtages AKL-PER

http://www.mro-network.com/maintenance-repair-overhaul/rolls-royce-bolsters-trent-1000-maintenance-program

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alasta

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#1916991 11-Dec-2017 20:45

Linux:

My favourite one is the BA9 742 and 4 engines lost well before the 789 engine issue

A former colleague of mine was on that flight. There was a really fascinating book about it in which he was interviewed.

Technofreak

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#1917015 11-Dec-2017 22:02

Linux:

My favourite one is the BA9 742 and 4 engines lost well before the 789 engine issue

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Not really relevant to this thread as the cause had nothing to do with an engine malfunction. However a story still well worth reading about.

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#1917017 11-Dec-2017 22:03

andrewNZ: The blades have been damaged by something specific, it has been wedged in there and chewed them up. It will probably be obvious to them what it is, and it will likely be obvious why.

Good work @PeterReader , You're not advertising guns on a mass shooting article, but you're getting there :-)

Yep that damage caused by corroded blades shedding bits further upstream in the engine.

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Technofreak

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#1917043 11-Dec-2017 22:16

amiga500: Assuming that the engines on the 787 are the original ones the 'good one' may have had a similar amount of corrosion on the turbine blades. While very very unlikely there is a chance that the other engine could have failed as well.

It's my understanding that it's normal practice to have the engine lives staggered to avoid having two engines with the same number of cycles/hours on the same airframe. Obviously not practical from new but at some stage engines get swapped around onto other airframes.

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amiga500

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#1917048 11-Dec-2017 22:41

Oblivian:

It does appear they are now being super proactive. The repair scheme has been on for over a year now. Surprised it's taken the sign of issues on 2 of ours for them to be fast tracked. Ambulance at the bottom of a hill..

9H-FOX landed in AKL tonight from HiFly wet-leasing to cover one of the outtages AKL-PER

http://www.mro-network.com/maintenance-repair-overhaul/rolls-royce-bolsters-trent-1000-maintenance-program

https://www.jetphotos.com/registration/9H-FOX

In view of the dramas I'd imagine the Air NZ passengers won't be complaining that it has four engines.

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#1917067 11-Dec-2017 23:59

not as dramatic as QF32 2010 (A380)

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#1917084 12-Dec-2017 07:14

amiga500:

Oblivian:

It does appear they are now being super proactive. The repair scheme has been on for over a year now. Surprised it's taken the sign of issues on 2 of ours for them to be fast tracked. Ambulance at the bottom of a hill..

9H-FOX landed in AKL tonight from HiFly wet-leasing to cover one of the outtages AKL-PER

http://www.mro-network.com/maintenance-repair-overhaul/rolls-royce-bolsters-trent-1000-maintenance-program

https://www.jetphotos.com/registration/9H-FOX

In view of the dramas I'd imagine the Air NZ passengers won't be complaining that it has four engines.

For very underpowered engines. The fan in my oven is more powerful!

amiga500

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#1917614 12-Dec-2017 17:10

I remember watching the Singapore Airlines A340 taking off from Christchurch, & its rate of climb was nothing like the B777 200 ER that replaced it. In fact if you stood at the NE end of the runway you got a real good view of the A340 as it was so low!

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