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Area of Science:

  • Human Factors in Aviation
  • Cognitive Systems Engineering
  • Aerospace Safety

Background:

  • In-flight powerplant system malfunctions (PSM) remain a safety concern despite high engine reliability.
  • Inappropriate flight crew responses to PSM can reduce safety margins and disrupt operations.

Purpose of the Study:

  • To analyze flight crew responses to in-flight PSM using control task analysis.
  • To propose evidence-based design recommendations for technological and information systems to improve flight crew response to PSM.

Main Methods:

  • Applied control task analysis, decision ladder template, and Skills, Rules, and Knowledge (SRK) framework.
  • Conducted knowledge elicitation via Critical Decision Method (CDM) interviews with pilots.
  • Developed generic decision ladders based on interview data and operational guidelines.

Main Results:

  • Identified cognitive processes and states prone to errors during PSM events.
  • Characterized key stages of PSM response: aircraft control, PSM identification, checklist execution, and flight plan modification.
  • Developed design recommendations for information systems to support flight crew decision-making.

Conclusions:

  • The combination of control task analysis, decision ladders, and SRK framework offers a structured approach to improving complex work situations.
  • This research provides novel application of these methods to flight operations and offers specific design recommendations for PSM response.