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|Appendix
            E | Independent Test Team Report to
            the Commission.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
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|Appendix
            F | Personal Observations on
            Reliability of Shuttle.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Appendix
            G | Human Factors Analysis.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Appendix
            H | Flight Readiness Review Treatment
            of O-ring Problems.
            
            STS-6 Flight Readiness
               Reviews: Charts 1 & 2.STS 41-C Flight Readiness
               Reviews. Charts 3-21A.STS 41-D Flight Readiness
               Reviews: Charts 22-28.STS 41-G Flight Readiness
               Reviews: Charts 29-32.STS 51-E Flight Readiness
               Reviews: Charts 33-81, Transcript.STS 51-B Flight Readiness
               Reviews: Charts 82-84.STS 51-F Flight Readiness
               Reviews: Charts 85-133.August 19, 1985 Thiokol
               Briefing to NASA Headquarters: Charts 134-189.STS 51-J Flight Readiness
               Reviews: Chart 190.STS 61-C Flight Readiness
               Reviews: Chart 191.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Appendix
            I | NASA Pre-Launch Activities
               Team Report.
               
               I. Table of Contents.
               
               II. Signature Page.
               
               III. Summary Narrative.
               
               IV. Charter.
               
               V. Organization.
               
               VI. Definitions of Terms and
               Acronyms.
               
               VII. Technical Description and
               Analysis.A. NSTS Processing.
                  
                  1. SRB Processing Review
                     Study.
                     
                     2. SRB Joint Mate Review
                     Team Study.
                     
                     3. ET Processing Review
                     Study.
                     
                     4. Orbiter Processing
                     Review Study.
                     
                     5. Pad-B Activation
                     Review Study.
                     
                     6. Pad-B Facility Review
                     Study.
                     
                     7. Ice Team
                     Report.
                     
                     8. Payload Processing
                     Review Study.
                     
                     9. Integrated Ground
                     Processing Review Study.
                     
                     10. Range Support Review
                     Study.
                  
                  B. Flight Readiness Review
                  Process.
                  
                  1. Flight Readiness
                     Review Process Study.
                  
                  C. Pre-Launch
                  Security.
                  
                  1. Assessment of Kennedy
                     Space Center Security Procedures and Operations
                     Supporting STS 51-L Mission.VIII. Findings and
               Conclusions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Appendix
            J | NASA Mission Planning and
            Operations Team Report.
            
            I. NARRATIVE SUMMARY.
               
               II. GENERAL ASSIGNMENT
               LETTER.
               
               III. ORGANIZATION/METHOD OF
               INVESTIGATION.
               
               IV. ACRONYMS.
               
               V. MISSION PLANNING AND
               OPERATIONS TEAM REPORT.A. STS 51-L Planning and
                  Preparations.
                  
                  B. STS 51-L Mission
                  Operations.
                  
                  C. Mission Planning.
                  
                  D. National Space
                  Transportation System (NSTS) Mission
                  Operations.
                  
                  E. NSTS Flight Rate and
                  Flight Scheduling.VI. MAJOR FINDINGS AND
               CONCLUSIONS.
               
               VII. REFERENCES.
               
               APPENDIX A. RANGE SAFETY
               REPORT (Not Reproduced).
               
               APPENDIX B. KSC LANDING
               CONSIDERATION REPORT. (Not Reproduced).
               
               APPENDIX C. CREW ESCAPE
               SYSTEMS REPORT. (Not Reproduced).
               
               APPENDIX D. ORBITER
               MAINTENANCE/INSPECTION SYSTEMS SUMMARY. (Not
               Reproduced).
               
               APPENDIX E. EXECUTIVE SUMMARY
               OF FLIGHT SOFTWARE REVIEW BRIEFING TO THE PRESIDENTIAL
               COMMISSION. (Not Reproduced).
               
               APPENDIX F. FLIGHT CREW
               INVOLVEMENT IN THE SPACE SHUTTLE PROGRAM. (Not
               Reproduced).
               
               APPENDIX G. STS 51-L FLIGHT
               OPERATIONS TEAM SUMMARY REPORT. (Not
               Reproduced).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Appendix
            K | NASA Development and Production
            Team Report.
            
            I. SUMMARY NARRATIVE.
               
               II. DIRECTIVE APPOINTING
               DEVELOPMENT AND PRODUCTION TEAM/CHARTER.
               
               III. ORGANIZATION/METHOD OF
               INVESTIGATION.
               
               IV. DEFINITIONS OF TERMS AND
               ACRONYMS.
               
               VI. FINDINGS AND
               CONCLUSIONS.APPENDICES (Not
               Reproduced)A. DDATF Charter/D&P Team
               General Assignment.
               
               B. Space Shuttle Solid Rocket
               Booster Fact Book.
               
               C. SRM Design and Development
               Requirements and Certification.
               
               D. Space Shuttle Solid Rocket
               Motor Chronology.
               
               E. Hazard Analysis Report for
               Space Shuttle Solid Rocket Booster and Range Safety
               Command Destruction System.
               
               F. SRM Action Items.
               
               G. Solid Rocket Booster Design
               Verification.
               
               H. MSFC Presentation.
               
               I. Martin Marietta Corporation
               Presentation to the Presidential Commission.
               
               J. ET System Definition
               Handbook.
               
               K. ET Hazard Catalog.
               
               L. ET Action Items.
               
               M. SSME Description and
               Operation.
               
               N. Rocketdyne Presentation to
               the Presidential Commission.
               
               O. Detail Design Hazard
               Analysis Space Shuttle Main Engine Operational
               Flights.
               
               P. SSME Action Items.
               
               Q. Space Shuttle Sytem
               Summary.
               
               R. Rockwell International
               Presentation to the Presidential Commission.
               
               S. Space Transportation System
               Mission Safety Summary.
               
               T. Orbiter Action
               Items.
               
               U. SRM O-ring Anomaly
               Chronology.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Appendix
            L | NASA Accident Analysis Team
            Report.
            
            1. Introduction.
               
               2. Accident Timeline.
               
               3. Anomalies/Significant
               Observations.
               
               4. Areas of
               Consideration.
               
               5. SRB/SRM
               Possibilities.
               
               6. Joint/Seal
               Possibilities.
               
               7. Findings.
               
               8. Appendix A.
            
            STS 51-L
               DATA & DESIGN ANALYSIS TASK FORCE ACCIDENT
               ANALYSIS TEAM SOLID ROCKET MOTOR WORKING
               GROUP:
               
               I.
               Organization/Responsibilities
               
               II. Method of
               Investigation
               
               III. Definition of Terms and
               Acronyms
               
               IV. Technical
               DescriptionA. Hot Gas Leak Failure
                  Scenarios1. Internal
                     Heating/Inhibitor/Insulation Anomalies.a. Scenario
                        Description
                        
                        b.
                        Investigation
                        
                        c. Findings2. LH2Leak Resulting in SRM Case Membrane orJoint
                     Failure .
                     
                     3. Assembly
                     Conditions/Anomaliesa. Scenario
                        Description
                        
                        b.
                        Investigation
                        
                        c. Findings4. Scenario 4: Primary
                     O-Ring Blow-by or Low Temperature
                     Effects.a. Scenario 4a:
                        Secondary O-Ring Defect
                        
                        b. Scenario 4b: Ice
                        in Joint
                        
                        c. Scenario 4c: Leak
                        Check Port Leaks
                        
                        d. Scenario 4d:
                        O-Ring Actuation Time Delayed by Low
                        Temperature5. Loads
                     Exceedance
                     
                     6. Scenario 6: Putty
                     Holds Pressure Off Primary O-Ring
                     
                     7. Case Rupture .B. Linear Shaped Charge
                  Failure (Motor)
                  
                  C. Linear Shaped Charge
                  Failure (Nozzle)
                  
                  D. Propellant Detonation
                  (External Shock Wave)
                  
                  E. Safe and Arm Device
                  Failure
                  
                  F. Igniter Failure
                  
                  G. Flex Bearing
                  Failure
                  
                  H. System Tunnel Failure
                  
                  I. Propellant/Liner Debound
                  Failure
                  
                  J. Insulation Failure
                  
                  K. Nozzle Failure
                  
                  L. Pressure Transducer/Port
                  Failure
                  
                  M. Propellant Grain Failure
                  
                  N. Combustion Instability
                  
                  O. External Thermal
                  Protection System Failure
                  
                  P. Electrostatic DischargeV. Summary
               
               VI. Findings
               
               APPENDIX
               A. Recovery Support
               Team Report.
               
               APPENDIX
               B. SRM Team
               Analyses.
               
               APPENDIX
               C. SRM Team
               Tests.
|Appendix
            M | Comments by Morton Thiokol on NASA
            Report.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        



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