NASA: Earned Value Management Implementation across Major Spaceflight Projects Is Uneven.

摘要

NASA historically has experienced cost growth and schedule slippage in its portfolio of major projects and has taken actions to improve in this area, including adopting the use of EVM. EVM is a tool developed to help project managers monitor risks. GAO was asked to examine (1) the extent to which NASA is using EVM to manage its major space flight acquisitions, (2) the challenges that NASA has faced in implementing an effective EVM system, and (3) NASA's efforts to improve its use of EVM. To address these questions, GAO obtained contractor and project EVM data and used established formulas and tools to analyze the data and assess NASA's implementation of EVM on 10 major spaceflight projects; interviewed relevant NASA headquarters, center and mission directorate officials on their views on EVM; and reviewed prior reports on EVM and organizational transformations. GAO compared NASA policies and guidance on EVM to best practices contained in GAO's cost estimating best practices guide.