SS
BA & CX already have fleets of Triplers with that era technology. QF is going through a major fleet replacement program and the theme that I have been hearing is that they are only considering the latest technology because of the price of fuel. When you look at SQ who can write off aircraft as fast as 3 years thus they turn them over reasonably quickly and it is not as important to wait for the most efficient. Qantas is required under Oz Govmt legislation writes the aircraft off over 12 years and generally holds onto them for 20-24 years, therefore they want to acquire aircraft that will not be too outdated when they eventually retire them.