James Webb Space Telescope: Project Meeting Cost and Schedule Commitments but Continues to Use Reserves to Address Challenges
What GAO Found
The National Aeronautics and Space Administration’s (NASA) James Webb Space Telescope (JWST) project is still operating within its committed schedule while in its riskiest phase of development, integration and test. Most hardware deliveries and two of five major integration and test efforts have been completed. Two other integration and test efforts are underway, with the final effort to begin in fall 2017. JWST used about 3 months of schedule reserve since GAO’s last report in December 2015. For example, the project used one month of schedule reserve to address delays in integrating the Optical Telescope Element and the Integrated Science Instrument module, due to the complexity of this effort. The project’s remaining 6 months of reserve is more than required by Goddard Space Flight Center requirements, as determined by project officials.
JWST is one of NASA’s most technologically complex science projects and has numerous risks and single points of failure, which need to be tested and understood before launch. The project also faces a number of risks related to the observatory software. Looking ahead, the project will likely need to consume more reserves for its complex integration and test efforts.
JWST is meeting its cost commitments despite technical and workforce challenges. Although the project used $42.8 million more than planned for fiscal year 2016, it is maintaining spending within the levels dictated by the 2011 replan. NASA continues to emphasize that maintaining schedule is the priority, which resulted in the use of the fiscal year 2016 cost reserves to meet technical challenges. Also, as GAO previously found in December 2015, the observatory contractor has continued to maintain a larger workforce for longer than planned in order to address technical issues. For example, in 2016, the observatory contractor averaged 165 full-time equivalents more than projected to address technical issues while minimizing the impact on schedule. The contractor
submitted a proposal to NASA this summer to cover cost overruns, which was the first such proposal since the replan in 2011.
Why GAO Did This Study
JWST is one of NASA’s most complex and expensive projects, at an anticipated cost of $8.8 billion. Now in the midst of significant integration and testing that will last the 2 remaining years until the planned October 2018 launch date, the JWST project will need to continue to address many challenges and identify problems, some likely to be revealed during its rigorous testing. The continued success of JWST hinges on NASA’s ability to anticipate, identify, and respond to these challenges in a timely and cost-effective manner to meet its commitments.
Conference Report No. 112-284, accompanying the Consolidated and Further Continuing Appropriations Act, 2012, included a provision for GAO to assess the project annually and report on its progress. This is the fifth such report. This report assesses the extent to which JWST is (1) managing technological and developmental challenges to meet its schedule commitments, and (2) meeting its committed cost levels and managing its workforce plans. To conduct this work, GAO reviewed monthly JWST reports, reviewed relevant policies, conducted independent analysis of NASA and contractor data, and interviewed NASA and contractor officials.
What GAO Recommends
GAO is not making recommendations in this report. GAO has made recommendations in previous reports, to which NASA has generally agreed and taken steps to implement. There are three recommendations that NASA has not fully implemented that could still benefit the JWST project.
View GAO-17-71. For more information, contact Cristina Chaplain at (202) 512-4841 or chaplainc@gao.gov.
