REG NASA-LLIS-1527--2004 Lessons Learned - Next Generation Launch Technology (NGLT) Clearly Establish Reserves Schedule Margin and Spending Profile Early.pdf

1、Lessons Learned Entry: 1527Lesson Info:a71 Lesson Number: 1527a71 Lesson Date: 2004-07-01a71 Submitting Organization: MSFCa71 Submitted by: Donald DugalSubject: Next Generation Launch Technology (NGLT)/Clearly Establish Reserves, Schedule Margin, and Spending Profile Early Abstract: The X-43C Projec

2、t budget and milestones were established well ahead of detailed cost and schedule analysis. Per Office of Aerospace Technology (OAT) policy at that time, no budget reserves or schedule margins were allowed. As project cost and schedule requirements grew, the only choice was to slip the first flight.

3、 The original spending profile was also not compatible with efficient procurement of flight hardware. Programs should establish preliminary project budgets with adequate reserves and schedule margin adjusting budget and spending profiles as better information is developed. Description of Driving Eve

4、nt: The X-43C Project budget and milestones were established well ahead of detailed cost and schedule analysis. Per Office of Aerospace Technology (OAT) policy at that time, no budget reserves or schedule margins were allowed. As project cost and schedule requirements grew, the only choice was to sl

5、ip the first flight. The original spending profile was also not compatible with efficient procurement of flight hardware. Inability to adjust the spending profile forced the project to rearrange cost elements to match the profile, adding risk and extending the schedule. Lack of effective reserves, c

6、omplicated by OAT 1-year spending metrics, exacerbated the problem.Lesson(s) Learned: Firm budgets should not be established until sound cost and schedule estimates have been developed. Funding and schedule reserves should be provided and managed at the project level. Funds appropriated as 2-year mo

7、ney should be spent as 2-year money. Funds from the first year can be held in reserve and rolled into the second year for immediate spending. This would establish new reserves Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-in current year that can b

8、e rolled into the third year, and so on. Overall funding, including reserves, should be consistent with project life-cycle costs, accounting for schedule margins.Recommendation(s): Programs should establish preliminary project budgets with adequate reserves and schedule margin adjusting budget and s

9、pending profiles as better information is developed. Programs should allow rollover of unspent first-year reserve funds into the next year. The program should track and reclaim unspent reserves if they accumulate to excess. Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson

10、: N/AMission Directorate(s): a71 Exploration Systemsa71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Administration/Organizationa71 Financial Managementa71 Policy & Planninga71 Program and Project ManagementAdditional Info: Approval Info: a71 Approval Date: 2005-07-19a71 Approval Name: Lisa Carra71 Approval Organization: MSFCa71 Approval Phone Number: 256-544-2544Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-