Analysis Of Space Shuttle Primary Avionics Software System (PASS) Discrepancies

Encountered In Flight (Found In-Flight or During Terminal Countdown)

James K. OrrIndependent Consultant

jkorr@gatech.edu

Copyright by James K. Orr 2015

Overview

• This presentation contains information on the 19 failures of the Space Shuttle Primary Avionics Software System (PASS) that occurred during Terminal Countdown or In-Flight.

• Purpose of the presentation is to present this information so that it is available to future manned space programs or other researchers.

• For additional information on the Space Shuttle Primary Avionics Software System (PASS), see references on page 6.

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References1. Christopher J. Hickey, Andrew L. Klausman, James B. Loveall, and James K. Orr, The

Legacy of Space Shuttle Flight Software, August, 2011, NASA JSC-CN-24428, JSC-CN-24683, presented at AIAA Space 2011 Conference & Exposition, 27 – 29 September, 2011, Long Beach California– Free at

• http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110014946.pdf– Also available through AIAA as AIAA 2011-7307

• http://arc.aiaa.org/doi/abs/10.2514/6.2011-73072. James K. Orr, Daryl Peltier, Space Shuttle Program Primary Avionics Software

System (PASS) Success Legacy – Quality & Reliability Data, August 24, 2010, NASA JSC-CN-21317, presented at NASA-Contractors Chief Engineers Council 3-day meeting August 24-26, 2010, in Montreal, Canada– Free at

• http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100029536.pdf

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