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Boeing Shoehorns More Seats Onto 777 Jet by Shrinking Lavatories

Screens are illuminated in the economy-class cabin on board an American Airlines Group Inc. Boeing Co. 777-300ER aircraft at Hong Kong International Airport in Hong Kong, China, on Friday, June 13, 2014.

Screens are illuminated in the economy-class cabin on board an American Airlines Group Inc. Boeing Co. 777-300ER aircraft at Hong Kong International Airport in Hong Kong, China, on Friday, June 13, 2014.

Photographer: Brent Lewin/Bloomberg
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As Boeing Co. tries to bolster sales of its largest twin-engine jetliner, no detail is too small. One result: It found room to shoehorn in as many as 14 more seats by shrinking the lavatories.

Adding capacity on the 777-300ER is part of Boeing’s quest to drum up orders for a best-selling aircraft line into the next decade as it prepares to start building the upgraded 777X. Engineers also lightened the plane by 1,200 pounds (544 kilograms) by rehanging the overhead bins.