2026-09-19T17:31:49Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1001072022-01-28T15:42:44Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Thomas Roemer and Daniel Whitney.
Mangan, Esther Hu
Leaders for Global Operations Program.
Leaders for Global Operations Program at MIT
Massachusetts Institute of Technology. Department of Mechanical Engineering
Sloan School of Management
2015-12-03T20:53:51Z
2015-12-03T20:53:51Z
2015
2015
http://hdl.handle.net/1721.1/100107
929462532
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015. In conjunction with the Leaders for Global Operations Program at MIT.
Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2015. In conjunction with the Leaders for Global Operations Program at MIT.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 63-64).
The Boeing 777 has seen an increased the rate of production from one plane every 7 days to one plane every 2.5 days. Wing production has relied on a sizeable work force and the use of overtime to meet this demand. The primary objective is to improve build efficiency by reducing variability in the production system. The impact of eleven variables was determined using a stepwise regression to predict for total labor hours across 250 airplanes. Three variables - travelers, defects, and quality assurance response time - accounted for almost 50% of the variability in labor hours. Other variations included engineering changes and rate breaks. Moving forward, the Wing Majors shop will redirect resources to control travelers, improve quality, and minimize quality assurance delays.
by Esther Hu Mangan.
S.M.
M.B.A.
64 pages
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Sloan School of Management.
Leaders for Global Operations Program.
Process and system variation impacts on 777 wings manufacturing
Thesis
application/pdf
Publication
unknown
unknown
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<Abstract>The Boeing 777 has seen an increased the rate of production from one plane every 7 days to one plane every 2.5 days. Wing production has relied on a sizeable work force and the use of overtime to meet this demand. The primary objective is to improve build efficiency by reducing variability in the production system. The impact of eleven variables was determined using a stepwise regression to predict for total labor hours across 250 airplanes. Three variables - travelers, defects, and quality assurance response time - accounted for almost 50% of the variability in labor hours. Other variations included engineering changes and rate breaks. Moving forward, the Wing Majors shop will redirect resources to control travelers, improve quality, and minimize quality assurance delays.</Abstract>
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