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Open AccessArticle

Bowtie Methodology for Risk Analysis of Visual Borescope Inspection during Aircraft Engine Maintenance

Department of Mechanical Engineering, University of Canterbury, Christchurch 8041, New Zealand
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Aerospace 2019, 6(10), 110; https://doi.org/10.3390/aerospace6100110
Received: 5 July 2019 / Revised: 24 September 2019 / Accepted: 24 September 2019 / Published: 2 October 2019
(This article belongs to the Special Issue Civil and Military Airworthiness: Recent Developments and Challenges)
Background—The inspection of aircraft parts is critical, as a defective part has many potentially adverse consequences. Faulty parts can initiate a system failure on an aircraft, which can lead to aircraft mishap if not well managed and has the potential to cause fatalities and serious injuries of passengers and crew. Hence, there is value in better understanding the risks in visual inspection during aircraft maintenance. Purpose—This paper identifies the risks inherent in visual inspection tasks during aircraft engine maintenance and how it differs from aircraft operations. Method—A Bowtie analysis was performed, and potential hazards, threats, consequences, and barriers were identified based on semi-structured interviews with industry experts and researchers’ insights gained by observation of the inspection activities. Findings—The Bowtie diagram for visual inspection in engine maintenance identifies new consequences in the maintenance context. It provides a new understanding of the importance of certain controls in the workflow. Originality—This work adapts the Bowtie analysis to provide a risk assessment of the borescope inspection activity on aircraft maintenance tasks, which was otherwise not shown in the literature. The consequences for maintenance are also different compared to flight operations, in the way operational economics are included. View Full-Text
Keywords: aviation maintenance; borescope inspection; Bowtie analysis; maintenance, repair, and overhaul (MRO); risk assessment; risk management; visual inspection aviation maintenance; borescope inspection; Bowtie analysis; maintenance, repair, and overhaul (MRO); risk assessment; risk management; visual inspection
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Aust, J.; Pons, D. Bowtie Methodology for Risk Analysis of Visual Borescope Inspection during Aircraft Engine Maintenance. Aerospace 2019, 6, 110.

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