Joint Strike Fighter: Implications of Program Restructuring and Other Recent Developments on Key Aspects of DOD's Prior Alternate Engine Analyses
Abstract
After supporting a Joint Strike Fighter (JSF) acquisition strategy that called for a competitive engine development of the F135 and F136 engines, the DoD stopped requesting funding for the F136 alternate engine in its fiscal year 2007 budget request, but the Congress continued to fund it through the 2010 budget. In February 2010, DoD projected that it would cost an additional $2.9 billion through 2016 to support an alternate engine program. DoD decided that an engine competition would not likely generate enough long-term savings to justify this up-front investment and subsequently terminated the alternate engine program. In 2010, at your request, we reviewed the basis for DoD's $2.9 billion funding projection and reported that the projection did not include the same level of fidelity and precision normally associated with a detailed, comprehensive cost estimate and that the amount of up-front investment needed could be lower if two key assumptions in DoD's analysis were changed. Moreover, since DoD's projection and our last review, several fundamental changes in the JSF aircraft and engine programs have taken place. At your request, we examined the potential implications of these changes to the $2.9 billion funding projection. We also examined the potential implications for DoD's broader cost-benefit analysis that captures the long-term costs and benefits of the competitive engine program. DoD has not done a complete analysis of the potential life-cycle costs and benefits of the competitive engine strategy in over 4 years. DoD maintains that while there have been significant changes made to the JSF aircraft and engine programs, there is still not a compelling business case to continue supporting both engines, and DoD does not plan to update its cost-benefit analysis. We believe that acquisition decisions should weigh both near-term and long-term costs and benefits and that an updated analysis would provide important information for making these decisions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 14, 2011
- Accession Number
- ADA549547
Entities
People
- Michael J. Sullivan
Organizations
- United States Government Accountability Office