Accession Number : ADA229622


Title :   Cost Effectiveness of Two versus Three Levels of Maintenance for Turbine Engines in the Air Force Inventory


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF SYSTEMS AND LOGISTICS


Personal Author(s) : Schiefen, John T


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a229622.pdf


Report Date : Sep 1990


Pagination or Media Count : 99


Abstract : This study examined the life cycle costs (LCC) for Air Force turbine engines. Specifically, the research compared the costs for two, three, and modified three level maintenance concepts. To achieve the research objectives, a LCC model, the 'Super Operating and Support Cost Model (SOSCM),' was used. SOSCM is used by the Propulsion SPO, ASD/YZ, at Wright Patterson AFB to estimate costs for Air Force engines. A sensitivity analysis was run on a generic test case to determine the effect of changes in certain cost drivers on LCC. There were a few important findings. First, for this case, the LCC for the two level concept was 14.7% greater than the cost for three levels of maintenance. Two factors accounted for most of the difference. The number of spare engines required increased, the second destination transportation costs rose sharply. The study also showed that changes in some factors have a greater impact on the costs for two levels of maintenance than three. Overall, the research points out that it should not be assumed that moving to two levels of maintenance will lower costs. Engine types should be considered individually to determine the most cost effective maintenance concept.


Descriptors :   *JET ENGINES , *LIFE CYCLES , *TURBINES , *COST EFFECTIVENESS , INVENTORY , COST ANALYSIS , THESES , SPARE PARTS , COSTS , TEST AND EVALUATION , ENGINES , AIR FORCE , LOGISTICS SUPPORT , MAINTENANCE , COST MODELS


Subject Categories : Administration and Management
      Jet and Gas Turbine Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE