Word: pylons
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...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's safety...
...order grounded all DC-10s when, in fact, the defects have only shown up on the earlier, shorter-range (2,700 miles) No. 10 series. The later series 30 and 40 aircraft (4,000-to 4,600-mile range) are used mainly on transoceanic flights. The engine-and-pylon assembly, however, is almost identical on all three models...
...airlines whose procedures have been "contrary to McDonnell Douglas recommended procedures." Although not named, American Airlines knew that it was one target of the attack. American Vice President Donald J. Lloyd-Jones insisted that two McDonnell Douglas representatives had watched the airline change its very first DC-10 pylon on April 17, 1977. He also claimed that the manufacturer had observed numerous such changes since then and never objected to the one-step method. He termed the McDonnell Douglas charge "gratuitous and unnecessary." (The manufacturer withheld comment...
...search for the cause of the DC-10 crash could be long and costly. Investigators, for example, are trying to determine just what effect the years of jolting landings and high-stress takeoffs have had on the key metal parts that hold the engine and pylon to the wing. They are even studying the possibility of "acoustical fatigue," the damage to metal that can be caused by oscillations of sound frequencies generated by the DC-10's engine and its associated metal structures. More than 100 FAA investigators are working with McDonnell Douglas to find the reasons...
...whole engine-and-pylon assembly might have to be redesigned and manufactured with strengthened chrome steel, Duralumin and stainless steel fittings. These would be tested in wind tunnels, simulators and actual flights. The process could take weeks or months-or longer...