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By D. Lide, M. Paul

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Extra resources for Critical Evaluation of Chemical and Physical Structurasl Information

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Analysis has identified the airframe as the most expensive part of the airplane, and airframe assembly as the most expensive part of the internal process that determines the cost of the airplane. Airframe assembly is also the last area of the airplane manufacture that has resisted mechanization and automation improvements. All of the assembly process is performed by hand. Further 52 Airframe Manufacturing Cost Drivers observation and analysis has shown that the largest contributor to the hours needed to assemble an aircraft is the D/C process.

Com/forensisforum/defective-fasteners-drivestructural-failures, Retrieved May 31, 2012. 10 Arkell, Debbie, “Built-In Quality, Better, faster, cheaper—but most of all, better,” Boeing Frontiers, Volume 02, Issue 03, July 2003. org/Divisions/Divisions/ STEM/Documents/ArticlesOfInterest/Aviation_Week_Workforce_Study_09. pdf, Retrieved May 31, 2012. ppt, Retrieved May 31, 2012. ca/index. context=va&aid=14025, Retrieved May 31, 2012. 54 Chapter 3 Incentives and Disincentives to Automate If you have a rigidly controlled economy, cut off from the rest of the world by infinite protection, nobody has any incentive to increase productivity and to bring new ideas.

Some have estimated it as high as 80%. It makes sense. The single largest time (hours) labor contributor is the use of D/C to perform the most “aggressive” tasks (precise removal of material on costly product). The other activities are benign by comparison. Part placement, liquid shim, inspection, test, sealant application, and fastener installation can cause defects. But the single activity that has the greatest effect on the quality of the airplane airframe is drilling and countersinking. Even defects in other tasks within the assembly process are attributable to D/C.

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