The first 2 -600s delivered to CX are 2.5tonnes heavier than spec but the 3rd has had 1.25tonnes of metal from each wing!
The first 2 have not performed as CX would have liked. They are burning approx 4% more fuel than Airbus specifications.
The word is that CX arent happy that the -600 is not perfoming to spec (not surprises there) but whether it is still profitable enough, I have no idea.
The freight load is larger than the 744 which Im sure is keeping the bean counters very happy.
The CX fit is only 268 passengers (6F, 60J, 200Y) so front end pax numbers are required to keep the margins up.
The 3 x A340-600s are on lease from ILFC (3 years I think).
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Dont know how VS are finding her but as a launch customer there maybe significant kick-backs. No doubt she is better than the A342 they were using.