Risk-informed portfolio assessment: Application to aviation safety

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A risk-informed approach is developed and demonstrated to consolidate five existing program assessment metrics to develop a unified metric that simultaneously considers the relative importance of each. These metrics are used to objectively evaluate new technologies and analysis tools designed to improve aviation safety. This allows for a meaningful and unbiased evaluation and comparison of NASA's Aviation Safety Program (AvSP) technologies. The resulting model is referred to as the Composite Program Assessment Score (CPAS). The CPAS includes five existing metrics; Technical Development Risk, Implementation Risk, Fatal Accident Rate, Safety Benefits and Cost, and Safety Risk, which were previously defined and quantified by different sources. The CPAS involves the scaling and combination of these individual metrics. The CPAS is based on a weighted sum model and an additive value theory model. The resulting metrics allow for an overall comparison of all AvSP products in the portfolio. Knowledge elicitation sessions were held with three different Subject Matter Experts (SMEs): a pilot, a NASA program manager of technical integration, and a NASA product manger. Selected scenario analyses from the SME knowledge elicitation sessions for the two models are presented.

Original languageEnglish (US)
Title of host publicationProceedings of the European Safety and Reliability Conference 2007, ESREL 2007 - Risk, Reliability and Societal Safety
Pages1407-1414
Number of pages8
StatePublished - 2007
EventEuropean Safety and Reliability Conference 2007, ESREL 2007 - Risk, Reliability and Societal Safety - Stavanger, Norway
Duration: Jun 25 2007Jun 27 2007

Publication series

NameProceedings of the European Safety and Reliability Conference 2007, ESREL 2007 - Risk, Reliability and Societal Safety
Volume2

Other

OtherEuropean Safety and Reliability Conference 2007, ESREL 2007 - Risk, Reliability and Societal Safety
CountryNorway
CityStavanger
Period6/25/076/27/07

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Safety Research

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