Quote: A quarter of operators of older Boeing 777s have purchased a new performance improvement package that should boost the widebody airliner's fuel efficiency by 1%.
Boeing has officially launched the package for 777-200/200ER/300 models (dubbed "Classics") with orders for 139 aircraft from "at least seven" carriers, including launch customers Air New Zealand, Continental Airlines and Delta Air Lines. Boeing also confirms that Austrian Airlines, El Al and KLM have ordered upgrades for their 777 Classics.
Entry into service is targeted for early 2009 after Boeing completes a certification programme.
KrisYYZ From Canada, joined Nov 2004, 1588 posts, RR: 0 Reply 10, posted (5 years 6 months 3 weeks 5 days 21 hours ago) and read 11763 times:
Most of KL 's B777 are only one to three years old.
I was under the impression that Boeing continuously upgrades their designs as they are manufactured so every aircraft that rolls of the assembly line is up-to-date.
Tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 81 Reply 14, posted (5 years 6 months 3 weeks 5 days 19 hours ago) and read 10735 times:
Quoting KrisYYZ (Reply 10): I was under the impression that Boeing continuously upgrades their designs as they are manufactured so every aircraft that rolls of the assembly line is up-to-date.
That's true. Any time any of the OEM's releases a service bulletin to correct something in the fleet, they usually roll the correction into production as well. There are also some upgrades that some in at production that aren't retrofitable. Both kinds of upgrades happen throughout the life of a program.
ConcordeBoy From , joined Dec 1969, posts, RR: Reply 18, posted (5 years 6 months 3 weeks 5 days 17 hours ago) and read 8648 times:
Quoting Lemurs (Reply 11): From what I can tell, the GE90 PiP involves bringing all older GE90-90s, 84s, etc...up to GE90-94Bs
No it doesn't... it "just" involves installing the 3D-Aero and equivalent support infrastructure. The airline is still free to choose the thrust output, and for a while, CO continued to op its PiPed engines at 90K before bringing them up.
Actually, there's a very good reason:
a PW4090-powered 777 cannot op with higher than a 648K.lb MTOW
Quoting Siren (Reply 19): I'm guessing UA is saving money by going this route.
They wanted 656K (which GE and RR can grant), but after they witnessed the abysmal performance of the PW4098, they figured they'd be better off with stifled MTOW (since they were apparently staying with PW at all costs) than taking a born-loser such as that engine.