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Author Topic: A340-600 v's B777-3ER  (Read 2294 times)

welshsct

  • Former member
A340-600 v's B777-3ER
« on: July 18, 2011, 07:49:01 PM »
Hi

Are the fuel burn figures correct for these aircraft?

It shows the 4 engine A340 having a lesser fuel burn than the 777

This http://www.aircraft-commerce.com/sample_articles/sample_articles/flight_operations_sample.pdf
shows these figures in the real world to be slightly off...

Scott

yehboii

  • Former member
Re: A340-600 v's B777-3ER
« Reply #1 on: July 20, 2011, 03:27:20 AM »
The A340-600 is (in the real world anyway) generally much less efficient than the 777-300ER. This can be seen with major airlines choosing the 773 over the A340-600, for example Thai who are in the process of phasing out their a340-600's for the 777-300ER.
So yeah the game is slightly unrealistic in that way, and the 777-300ER is more desirable to airlines anyway.

CX717

  • Former member
Re: A340-600 v's B777-3ER
« Reply #2 on: July 20, 2011, 04:29:14 AM »
You have to remember 4 engine vs 2 not only mean more fuel burn(in some case),but more engine to overhaul,more backup parts and engine....

Offline apenfold

  • Members
  • Posts: 295
Re: A340-600 v's B777-3ER
« Reply #3 on: July 20, 2011, 12:05:09 PM »
The A346 was meant (and was indeed successful to an extent) as a Boeing 747 replacement aircraft. The problem with it was that it was beaten quite quickly (as the 747 was) by the 777-300ER and to a lesser extent the other 777 variants.

The 4 engines vs 2 makes a major difference in maintenance costs and - albeit a bit smaller - a difference in fuel consumption as well. One thing that isn't modeled in AWS but is a factor for real airlines is performance at hot and high airfields, notably this is the case with Iberia, who have their A346s for operations into a number of South American destinations, and South African with operations out of JNB.

The real world limitations of the 77W at JNB can be seen on this aforementioned link: http://www.aircraft-commerce.com/sample_articles/sample_articles/flight_operations_sample.pdf.

In AWS therefore the 77W is more popular, however if the 777 production line is full-ish and there is space on the A330/340 line, then A346s aren't necessarily a bad option.

Offline ArcherII

  • Members
  • Posts: 1935
Re: A340-600 v's B777-3ER
« Reply #4 on: July 20, 2011, 03:04:46 PM »
Also, we're not taking account of ETOPS certification for the airlines. Iberia is about to operate the A330 and is currently working on their ETOPS certification.
But there're certain sectors where you can't operate a twin, for example Sydney - Ezeiza, Guarulhos, Rio, Santiago... That's why Quantas is still operating, and is the only operator of, the B744ER and isn't running a B77W on those routes.

Offline swiftus27

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  • Posts: 4395
Re: A340-600 v's B777-3ER
« Reply #5 on: July 20, 2011, 06:57:40 PM »
Isnt the 787 going to be basically ETOPS free?

Offline alexgv1

  • Members
  • Posts: 2184
Re: A340-600 v's B777-3ER
« Reply #6 on: July 20, 2011, 07:46:43 PM »
Isnt the 787 going to be basically ETOPS free?

Thınk ıt gets 180 mınutes certıfıcatıon some tıme thıs year.
CEO of South Where Airlines (SWA|WH)

Offline swiftus27

  • Members
  • Posts: 4395
Re: A340-600 v's B777-3ER
« Reply #7 on: July 20, 2011, 07:48:57 PM »
Thınk ıt gets 180 mınutes certıfıcatıon some tıme thıs year.

I thought they were expecting something like 240 or dare I even say 300?  I couldnt imagine many places on this planet 5 hours from land, though.

yehboii

  • Former member
Re: A340-600 v's B777-3ER
« Reply #8 on: July 20, 2011, 08:43:38 PM »
Thınk ıt gets 180 mınutes certıfıcatıon some tıme thıs year.

240

Offline pascaly

  • Members
  • Posts: 405
Re: A340-600 v's B777-3ER
« Reply #9 on: July 21, 2011, 02:23:48 AM »
The 787 will enter service with 180 min ETOPS (not 240) and eventually gain a 330 min ETOPS certification.  Imgaine explaining that to a passenger in 1969!   :laugh:

http://www.flightglobal.com/blogs/flightblogger/2011/06/330min-etops-certification-to.html


 

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