Word: airlinesâ
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...airlines???and the best overseas carriers?take painstaking care of jets like the 747. Each plane, and each engine on each plane, gets a series of standard checkups. Even if it has no obvious problems, the jet receives an eight-hour maintenance check four times annually. Every year, in addition, mechanics wheel each plane into a hangar for two weeks and tear it down piece by piece, like federal agents hunting for heroin. Ceilings and floors are removed, every rivet and every cable is inspected. Engines are constantly being monitored and overhauled. The maintenance procedures are so complicated and expensive...
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