NASA SP 3423 : 2011

Acknowledgments
1 Introduction
2 Accident Precursor Analysis Overview
3 Accident Precursor Analysis Process Steps
4 Documentation of Process Steps and Reporting Results
5 Application to Other Mission Classes
6 Conclusion
Appendix A: Acronyms
Appendix B: References
Appendix C: Tool for Deliberative Anomaly Grading and
            Evaluation
Appendix D: DanGERS Reports
Appendix E: Defining a Trending Basis
Appendix F: Technical Basis for the Anomalous Condition
            Risk Index (ACRI)
Appendix G: Sample APA Results Reporting

Specifies a systematic means of analyzing candidate accident precursors by evaluating anomaly occurrences for their system safety implications and, through both analytical and deliberative methods used to project to other circumstances, identifying those that portend more serious consequences to come if effective corrective action is not taken.