{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/39685"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/39685","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Forecasting and strategic inventory placement for gas turbine aftermarket spares","abstract":"This thesis addresses the problem of forecasting demand for Life Limited Parts (LLPs) in the gas turbine engine aftermarket industry. It is based on work performed at Pratt & Whitney, a major producer of turbine engines. The author worked in the Global Materials Solutions program, Pratt & Whitney's latest business venture, in which they will provide OEM quality materials for the CFM56 engine manufactured by CFM International. The new business venture required a forecasting method that did not rely heavily on customer input or historic demand. A forecast was developed using publicly available aircraft utilization history for the LLPs in the aircraft. In addition, a methodology was proposed for the remaining parts that will be studied in a future LFM internship. In addition, an inventory placement analysis was completed for the GMS LLP supply chain.","abstract_html":"This thesis addresses the problem of forecasting demand for Life Limited Parts (LLPs) in the gas turbine engine aftermarket industry. It is based on work performed at Pratt & Whitney, a major producer of turbine engines. The author worked in the Global Materials Solutions program, Pratt & Whitney's latest business venture, in which they will provide OEM quality materials for the CFM56 engine manufactured by CFM International. The new business venture required a forecasting method that did not rely heavily on customer input or historic demand. A forecast was developed using publicly available aircraft utilization history for the LLPs in the aircraft. In addition, a methodology was proposed for the remaining parts that will be studied in a future LFM internship. In addition, an inventory placement analysis was completed for the GMS LLP supply chain.","abstract_has_math":false,"creators":["Simmons, Joshua T. (Joshua Thomas)"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Leaders for Manufacturing Program at MIT","school":null,"contributors":[],"advisors":["David E. Hardt and Roy E. Welsch."],"committee_chairs":[],"committee_members":[],"year":2007,"date_issued":"2007","date_published":"2007","updated_at":"2026-07-22T22:20:52Z","subjects":["Sloan School of Management.","Mechanical Engineering.","Leaders for Manufacturing Program."],"languages":["eng"],"rights":["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. 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It is based on work performed at Pratt & Whitney, a major producer of turbine engines. The author worked in the Global Materials Solutions program, Pratt & Whitney's latest business venture, in which they will provide OEM quality materials for the CFM56 engine manufactured by CFM International. The new business venture required a forecasting method that did not rely heavily on customer input or historic demand. A forecast was developed using publicly available aircraft utilization history for the LLPs in the aircraft. In addition, a methodology was proposed for the remaining parts that will be studied in a future LFM internship. 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