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Revision 1.1 Summary November 20, 2003

This revision to NASA's Implementation Plan for Space Shuttle Return to Flight and Beyond includes (1) our initial responses to additional data released by the Columbia Accident Investigation Board (CAIB), (2) preliminary cost estimates for return to flight activities, (3) a description of NASA's Space Shuttle return to flight suggestion process, and (4) updates to selected CAIB and Space Shuttle Program (SSP) actions. This revision does not change the entire document, but only selected pages which are listed below. These changed pages can be inserted into the existing document to reflect the Revision 1.1 update.

A more detailed explanation of Revision 1.1 changes follows: Initial Responses to Additional CAIB Data. In October 2003, the CAIB released additional data to supplement their August 2003, Volume I, CAIB Report. This Revision 1.1 provides NASA's initial responses to Volume II, Appendix D.a, also known as the "Deal Appendix." In this appendix, Brigadier General Duane Deal outlined concerns and made fourteen recommendations aimed at preventing another Shuttle accident. NASA's initial responses can be found in a new section 2.3 to this Implementation Plan. Preliminary Cost Estimates for RTF. NASA's process for RTF includes developing cost estimates for RTF activities as they are defined. Since our RTF activities are at varying states of maturity, the cost estimates provided in this Revision 1.1 are not allinclusive. The estimates represent those RTF activities that have been approved for implementation and funding by the Space Shuttle Program and verified by the RTF Planning Team. Estimates of total cost are presented, excluding reserves. This data can be found at the end of the Summary section.

NASA's Process for RTF Suggestions. As part of NASA's response to the CAIB recommendations, NASA put in place a means for NASA employees and the public to provide their ideas to help NASA safely return to flight. NASA created an electronic mailbox to receive RTF suggestions and a process for responding to each message individually, including information about where the message will be forwarded for further review and consideration. A description of the process and a table summarizing results to date are provided immediately following the Response Summaries.

Updates to Selected CAIB and SSP Actions. Status and schedule updates are provided to action SSP-1, Quality Planning and Requirements Document/Government Mandated Inspection points; CAIB Observation O10.4-3, KSC Quality Assurance Personnel Training Programs; and CAIB Observation O10.4-4, ISO 9000/9001, and Observation O10.5-3, NASA Oversight Process. These changes can be found in Part 2, Raising the Bar - Other Corrective Actions.

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