19 Flushes Go Where?

"On airplanes, it's all about how you use the real estate," said Sébastien Weber, chief executive of Zodiac's Water and Waste Systems. Their business, which is based in this city just south of Los Angeles, tests those flushes long before that flight of yours. The more room saved by tucking those jet plumbing pipes, so tightly under your feet, guarantees more seating.