Implementing Software Safety on the Space Shuttle Cockpit Avionics Upgrade (CAU) Project: A PRA Case for an Initial Qualitative Approach

  • Hubert C. McLeod
Conference paper


The Cockpit Avionics Upgrade (CAU) is to improve space shuttle safety by enhancing crew situational awareness, decreasing crew workload during critical flight periods, and doing much of the deductive reasoning to provide abort flight management and enhanced caution and warning. This new“glass cockpit” is scheduled to fly in 2006. The enhanced displays will not fly the shuttle; however the CAU subsystem displays will assist the crew to fly the shuttle via the Shuttle General Purpose Computers (GPCs) [1].


Space Shuttle Data Pollution Critical Software Software Requirement Specification Software Safety 
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  1. 1.
    United Space Alliance, LLC Factsheet: “The 21st Century Space Shuttle—A Familiar Workhorse Evolves into a Safer, More Capable Spacecraft” (undated and not paginated)Google Scholar
  2. 2.
    Space Shuttle Cockpit Avionics Upgrade System Architecture, Revision GGoogle Scholar
  3. 3.
    Davison, M., “CAU System Safety Process” presentation (RRCAs and IMPACT diagrams by SEA, Inc.), October 17, 2002Google Scholar
  4. 4.
    Space Flight Operations Contract (NAS9-20000), “CAU Data Pollution White Paper,” Revision Basic, November 14, 2002Google Scholar

Copyright information

© Springer-Verlag London 2004

Authors and Affiliations

  • Hubert C. McLeod
    • 1
  1. 1.Space Shuttle Upgrades Development (SSUD)United Space AllianceLLC HoustonUSA

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