Word: bulkheads
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Dates: during 1970-1979
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When the mechanics returned, the engine and pylon unit had shifted an almost imperceptible quarter-inch, throwing them out of exact alignment with their wing fittings. According to federal investigators, the workmen then used brute force to jam the unit into its mounting. The flange on the rear bulkhead of the pylon apparently cracked, so minutely that the fault was not detected The aircraft then flew some 100 flights before engine No. 1 ripped loose from the wing on May 25 in Chicago...
...that we did cause the crack." But he suggested that the problem could have originated with metal wedges used by the manufacturer to align parts that had not fitted exactly when the aircraft was built Said he: "It may be that the existence of shims in the aft bulkhead created an interference fit that made the creation of the crack inevitable, no matter what procedure was used...
...point, Burton rose from his chair and shouted, "Jesus Christ, just who is in charge over there anyway?" Later the chairman produced a copy of a report from the FAA's regional office in Los Angeles, dated June 1, which noted that the flange on the aft bulkhead of the engine pylon-a part suspect in the DC-10 crash-may have cracked under stress. Bond admitted he had not seen the report. Burton stood again and declared acidly, "It would be helpful to the public if you read your own documents where they relate to the public...
...snapped because of "metal fatigue"-the progressive weakening that results from repeated stress. One investigator even christened it "the murdering bolt." But electron microscope studies showed the bolt had been broken by a sudden, violent strain. Meanwhile, a crack had been found in the plate that formed the aft bulkhead...
...since many more Chinese speak English than Japanese.) Nonetheless, it is wise for Americans to bring their own interpreter, if they can find one skilled in both the Chinese language and U.S. business terms. Misunderstandings do occur; once some Boeing negotiators, slipping into airline slang, referred to a small bulkhead in a 747 jet, where food trays or small luggage can be stored, as a "doghouse." After many blank stares, the puzzled Chinese asked, "Why design your airplanes to accommodate dogs...