Accession Number : ADA302627

Title :   Why Schedules Slip: Actual Reasons for Schedule Problems Across Large Air Force System Development Efforts.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Cashman, William M.

PDF Url : ADA302627

Report Date : SEP 1995

Pagination or Media Count : 120

Abstract : The three main objectives of this research were to identify the actual reasons for schedule problems across large Air Force system development efforts, to quantity the importance of each category of reasons in terms of frequency and severity, and to demonstrate that the reasons for schedule problems are not program unique, but are common across system development efforts. To this end, this thesis contains a categorization and analysis of 549 reasons for schedule difficulties on 22 large Air Force Engineering and Manufacturing Development (EMD) programs from 1981 to 1994. These aircraft, missile, aircraft equipment, aircraft upgrade, and simulator programs had contract values ranging from $40M to over $lOB. All reasons were extracted from narrative explanations of negative schedule variances contained in contractor generated Cost Performance Reports (CPRs). Reasons for schedule problems were placed into categories, and categories were ranked by frequency of problems, total schedule variance (in dollars), and total schedule variance (in work days). Seven categories (technical problems, late subcontractors, manufacturing problems, design changes, late data, contracting, and staffing) accounted for 49 percent of the frequency, 57 percent of the schedule variance (in dollars), and 49 percent of the schedule variance (in work days).

Descriptors :   *MANAGEMENT PLANNING AND CONTROL, *DEFENSE SYSTEMS, *CONTRACT ADMINISTRATION, *PRODUCTION ENGINEERING, *PROBLEM SOLVING, *SCHEDULING, *AIR FORCE PLANNING, *SYSTEMS MANAGEMENT, FREQUENCY, SIMULATORS, LESSONS LEARNED, AIRCRAFT, MANUFACTURING, WEAPON SYSTEMS, THESES, VARIATIONS, ERROR ANALYSIS, AIRCRAFT EQUIPMENT, PLANNING PROGRAMMING BUDGETING, AIR FORCE EQUIPMENT.

Subject Categories : Administration and Management
      Logistics, Military Facilities and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE