Fuselage Cracks, Poor Maintenance Cited in 2002 Rupture of B747

Air Safety Week, March 7, 2005

The whole concept of "doublers" instead of skin replacement may need reexamination. It is ironic that as we enter the dawn of a new era of composite pressurized hulls with the B787, it is only just becoming apparent how critical slow-growth fatigue damage is for high specification metals. Is there a similar hard lesson awaiting in the field of composite structures? But in the area of present concern for metal fatigue and aging airplanes it would appear that we are only just now scratching the surface.

The ASC report is available at www.asc.gov.tw/acd_files/CI611_Report_English_VOL_1.pdf and http://www.asc.gov.tw/acd_files/CI611_Report_English_VOL_2.pdf.> [Copyright 2005 Access Intelligence, LLC. All rights reserved.]

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