Boeing upgrades aim to cut 737 fuel use by 2 percent

While Boeing officials continue to say the company is more likely to replace its 737 than outfit it with new, more efficient engines, the company last week built a 737 with a series of upgrades intended to boost fuel efficiency by 2 percent.

That would mean new 737s would be 7 percent more efficient than the first Next-Generation 737s, 737 chief project engineer John Hamilton said at the company's Renton, Wash., plant on Tuesday.

The upgrades include an improved......

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