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Jetstar 787 Osaka

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Old 2nd Apr 2019, 04:42
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Jetstar 787 Osaka

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Old 2nd Apr 2019, 09:40
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It may well have been a little more than a 'surge' Mr O'Sullivan.

Many will recall the ANA 787 suffering a double engine failure at Osaka. Fortunately, the software decided to shut it down on the ground. This event is an interesting development.
With engine design a highly competitive and costly enterprise manufacturers are keen to be lighter and more efficient than the other offerings.
Rolls Royce miscalculated the wear rates on the Trent 1000 engines, as it related to the intermediate turbine stage. A separate issue with compressor wear was found. Both components wear far faster than their models predicted.
Airlines will have factored the projected fatigue lives into the maintenance modelling.

Little Napoleon made big fanfare of the 787 operating economics sighting the lower maintenance costs.

“It gives you better economics because it’s 20% more fuel efficient and with a lot lower maintenance cost given the new technology. That means there are routes we could have done before with distance, but couldn’t do economically that now come onto the radar screen.”

When it comes to predicting the future, past performance has proved inaccurate. New technology with little operational exposure is even less able to accurately allow airlines to confidently predict the future.

As Donald Rumsfeld reminded us, "You don't know what you don't know."

From a fleet perspective, Boeing has not identified and resolved the root cause of the 787 electrical fires. Whilst the battery 'box' has been approved and the aircraft flies, the necessary elements of combustion remain.
Perhaps what we are witnessing with Boeing is a normalisation of deviance, in that having little control over engines and batteries the aircraft may have failure points that their design processes have failed to adequately address as they lost process control.
It is too early to tell whether there is a systemic problem with the GenX engine, but one can be sure Boeing will be very concerned; Despite short term savings from outsourcing looking rather elegant on the spread sheet, the risk of reputational damage is all in-house; Boeing will own it.

Airlines like Qantas waiting an eternity for new technology to deliver a comparative advantage may unwittingly have exposed themselves to more risk than their spread sheets predicted.
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Old 2nd Apr 2019, 10:03
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I heard last night that this event was fuel contamination and that they lost both, but not concurrently. Aircraft's first revenue flight after fuel tank servicing offshore.
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Old 2nd Apr 2019, 11:09
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It could be a thrust surge if contaminated fuel, sounds potentially similar to the CX A330: Report on the accident to Airbus A330-342 B-HLL operated by Cathay Pacific Airways Limited at Hong Kong International Airport, Hong Kong on 13 April 2010
SYNOPSIS Cathay Pacific Airways Limited (CPA) flight CPA780 declared “MAYDAY” when approaching Hong Kong International Airport (VHHH) with control problem on both engines. The aircraft landed at a groundspeed of 231 knots, with No. 1 engine stuck at about 70 % N1 and No. 2 stuck at about 17 % N1.
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Old 2nd Apr 2019, 13:01
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Problems started early last week was grounded in DPS. Flew back a few days later operated one flight to BKK and was grounded again in the return.

Why was it sent to AKL for engineering? I’m not familiar with what I assume ANZ doing JQ work. Must have been fairly critical.
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Old 2nd Apr 2019, 21:01
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From a fleet perspective, Boeing has not identified and resolved the root cause of the 787 electrical fires. Whilst the battery 'box' has been approved and the aircraft flies, the necessary elements of combustion remain.
Often repeated, but simply not true. Boeing completely redesigned the battery and the charging system. However, due to the extent of the damage to the battery during the two battery fires, they were unable to firmly establish what the root cause was. So using a belt and suspenders approach, they put the battery in the steel box.
Before the redesign, 40 787s experienced 2 battery fires in about a year.
There are now ~800 787s in service, averaging ~4000 hours/year utilization (that works out to over 3 million flight hours/year fleetwide). Since the redesign there has been one battery event - a single cell failed but thanks to the battery redesign the fault was contained to a single cell and didn't propagate to the other cells. The cell fault was traced to a manufacturing defect and corrective action was put in place.
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Old 3rd Apr 2019, 08:47
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Japan Transport Safety Board has commenced an investigation

https://www.atsb.gov.au/publications...r/ae-2019-016/
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Old 3rd Apr 2019, 11:25
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Originally Posted by Rated De
It may well have been a little more than a 'surge' Mr O'Sullivan.

Many will recall the ANA 787 suffering a double engine failure at Osaka. Fortunately, the software decided to shut it down on the ground. This event is an interesting development.
With engine design a highly competitive and costly enterprise manufacturers are keen to be lighter and more efficient than the other offerings.
Rolls Royce miscalculated the wear rates on the Trent 1000 engines, as it related to the intermediate turbine stage. A separate issue with compressor wear was found. Both components wear far faster than their models predicted.
Airlines will have factored the projected fatigue lives into the maintenance modelling.

Little Napoleon made big fanfare of the 787 operating economics sighting the lower maintenance costs.

“It gives you better economics because it’s 20% more fuel efficient and with a lot lower maintenance cost given the new technology. That means there are routes we could have done before with distance, but couldn’t do economically that now come onto the radar screen.”

When it comes to predicting the future, past performance has proved inaccurate. New technology with little operational exposure is even less able to accurately allow airlines to confidently predict the future.

As Donald Rumsfeld reminded us, "You don't know what you don't know."

From a fleet perspective, Boeing has not identified and resolved the root cause of the 787 electrical fires. Whilst the battery 'box' has been approved and the aircraft flies, the necessary elements of combustion remain.
Perhaps what we are witnessing with Boeing is a normalisation of deviance, in that having little control over engines and batteries the aircraft may have failure points that their design processes have failed to adequately address as they lost process control.
It is too early to tell whether there is a systemic problem with the GenX engine, but one can be sure Boeing will be very concerned; Despite short term savings from outsourcing looking rather elegant on the spread sheet, the risk of reputational damage is all in-house; Boeing will own it.

Airlines like Qantas waiting an eternity for new technology to deliver a comparative advantage may unwittingly have exposed themselves to more risk than their spread sheets predicted.

Wait, so now Qantas shouldn’t get a new fleet!?
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Old 3rd Apr 2019, 12:16
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Yeah I’m confused too dragon man.

Rated De, you crap on about needing a new fleet all the time but now say that they shouldn’t?
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Old 3rd Apr 2019, 20:21
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Qantas fleet metrics are as validated by the International Council of Clean Transportation poor.
Their fuel spend component of CASK is, self evidently a result of an extended delay in fleet re-equipment.

S&P made mention of it in February 2018
Roger Montgomery highlighted the increasing problem in July 2018.

Qantas has repeatedly stated through Little Napoleon they are waiting for the manufacturers to deliver something that can't yet be done. Presumably technology will as Little Napoleon alluded too several times, be a cornerstone to delivering the as yet unforeseen.
As the electrical problems with the 787 and indeed the powerplant issues of both GenX and Rolls Royce demonstrate, waiting for a comparative advantage to be delivered by a leap of technology, can expose the company to unforeseen risk.
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Old 3rd Apr 2019, 21:28
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Originally Posted by Rated De
As the electrical problems with the 787 and indeed the powerplant issues of both GenX and Rolls Royce demonstrate, waiting for a comparative advantage to be delivered by a leap of technology, can expose the company to unforeseen risk.
Being in business is an unforeseen risk - the whole ‘the sky is falling..’ Chicken Little song grows old.

You need a new tag line.
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Old 3rd Apr 2019, 22:15
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Interesting the aircraft is still at Osaka a week later. The aircraft VH-VKJ prior to going to Auckland for attention, had done the Melbourne Bangkok run and had 3 hour delays leaving each way. Just hope this aircraft doesn’t go back into service until they are 100% sure what the issue is.
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Old 4th Apr 2019, 00:12
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I believe the Japanese authorities have impounded the aircraft until the investigation is complete.
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Old 4th Apr 2019, 00:23
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Have they impounded the pilots too?
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Old 2nd May 2019, 06:40
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I see this A/C has finally taken to the air again today.
Any idea where it is going?
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Old 2nd May 2019, 07:45
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HKG - Haeco
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Old 2nd May 2019, 07:46
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What was it’s rego?
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Old 2nd May 2019, 07:53
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It’s VKJ......
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Old 2nd May 2019, 08:02
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Originally Posted by dragon man
What was it’s rego?
VH-VKJ. Currently (0800UTC) over the East China Sea.
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Old 2nd May 2019, 08:20
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Thanks, Flightradar 24 has it scheduled out today what are you tracking it on?
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