Continuous Safety Risk Evaluation by Example

Abstract

This note demonstrates continuous Safety Risk Evaluation of an aircraft using the SAE International standard Architecture Analysis and Description Language (AADL) for embedded software systems and the safety analysis capability of the Open Source AADL Tool Environment (OSATE). Any similarity of the example use cases to real aircraft incidents is purely accidental. The objective is exercise is *To illustrate the importance of including lower Design Assurance Level (DAL) components in a safety risk analysis, *To include the pilots role in the overall system safety analysis, *To perform safety risk analysis throughout the product life cycle - even when aircraft are already in operation. We proceed by first describing the elements of the model and then discussing several use scenarios for which we assess the safety risk by performing a fault tree analysis that calculates the probability of a catastrophic aircraft incident.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2019
Accession Number
AD1088676

Entities

People

  • Peter Feiler

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Detectors
  • Engineering
  • Engines
  • Fault Tree Analysis
  • Indicators
  • Life Cycles
  • Low Altitude
  • Malfunctions
  • Risk
  • Risk Analysis
  • Safety
  • Safety Analysis
  • Software Development
  • Specifications
  • System Safety

Fields of Study

  • Engineering

Readers

  • Computational Modeling and Simulation
  • Emergency Management and Homeland Security.
  • Software Engineering.