Lidé na fakultě
Ing. Kateřina Grötschelová

2024, New Trends in Civil Aviation: Proceedings of the 24th International Conference on New Trends in Civil Aviation 2024, Praha, České vysoké učení technické v Praze), p. 261-267), ISBN 978-80-01-07181-6, ISSN 2694-7854

This paper explores the integration of System-Theoretic Process Analysis (STPA) in Model-Based Safety Analysis (MBSA) for aircraft safety assessment, using the electrical system of the Cessna C510 Citation Mustang as a case study. It highlights how each method's unique strength, i.e., STPA’s focus on system interactions and MBSA’s detailed system modeling, complement each other to provide a more comprehensive safety analysis. The integration demonstrates improved hazard identification and safety assessment, suggesting this combined approach could significantly enhance the safety process in aircraft systems. The findings support the efficacy of merging STPA and MBSA, aligning with modern safety engineering guidelines and opening pathways for future research in complex system safety analysis.

Stať ve sborníku z prestižní konf.

2024, Advanced in Reliability, Safety and Security - Part 10 Cybersecurity and Functional Safety in Hazardous Systems & Research Challenges Concerning Sustainability, Safety and Security, Polish Safety and Reliability Association), p. 69-76), ISBN 978-83-68136-22-7

Authorities in civil aviation and other high-risk industries are currently making a progressive shift from compliance-based to performance-based oversight. This entails many challenges where among the foundational ones lies the issue of establishing effective performance-based checklists to be used when auditing organizations. This paper addresses the issue with a systemic approach to safety, namely the System-Theoretic Accident Model and Processes, which treats safety differently from its predecessors. The model is used to infer performance-based audit questions for selected type of aviation organization based on regulatory requirements, thus extending the compliance-based approach by broader reasoning about safety issues. The questions were tested with the Civil Aviation Authority during real-scale audit and the conclusions show that this is a promising approach to reduce the currently used subjective approach to evaluation of the actual performance, with many practical benefits for the Authority.

Stať ve sborníku z mezinár. konf.

2023, 2023 New Trends in Aviation Development (NTAD), Praha, IEEE Czechoslovakia Section), p. 77-82), ISBN 979-8-3503-7042-3, ISSN 2836-2756

Flight procedures are one of the main pillars for the safe performance of a flight. However, sometimes flight procedures must be modified. The need to modify them may arise from operational experience or a safety study. One of the methods that can be used to perform a safety study for the purpose is System-Theoretic Process Analysis (STPA). The goal of this paper was to perform a safety assessment of the Cessna 172 flight procedures based on a proactive systems approach to safety, using STPA. The goal was to identify potential safety issues related to selected flight procedures and to propose corrective measures or safety recommendations that could be used in practice. The results show how to work with STPA in the context of flight procedures and what measures or recommendations emerged from the analysis for the Cessna 172 flight procedures. The analysis confirmed the possibility of using system safety approach in general aviation to assess flight procedures and usefulness of its results.

Stať ve sborníku z prestižní konf. (Scopus)

2022, 2022 New Trends in Aviation Development (NTAD), Prague, Czechoslovakia Section IEEE), p. 61-66), ISBN 979-8-3503-2036-7

Accidents and incidents bring to the Civil Aviation Authority (CAA) necessary data to understand the current level of safety in the state. Their investigation is carried out by the safety investigation authority capable to perform independent investigation activities in the state or authorized organizations. The final reports often include safety recommendations that the organization or CAA should apply in the form of corrective actions. Since most accidents are the result of several causal factors, there is an opportunity to investigate occurrences using a systemic approach to safety. One of the methods that can be used to identify system safety issues is STAMP-based Casual Analysis based on Systems Theory (CAST). The full application of the CAST at the state level requires some changes in the processing of safety data today. The goal of this paper was to create a concept of using data for the investigation of air accidents with the CAST analysis. Then to study the usability of the CAST to process safety data at the state level, primarily under the state oversight of the Czech Republic. The proposed concept presented with marked components of the CAST and the necessary data and information for the investigation according to this methodology. The concept shows where changes would need to be made to the current system setting to use the CAST at the state level without limitations.

Stať ve sborníku z prestižní konf. (Scopus)

2022, 2022 New Trends in Civil Aviation (NTCA), Praha, České vysoké učení technické v Praze), p. 153-159), ISBN 978-1-6654-5190-1

Aviation safety taxonomies are the sets of terms on which occurrence reporting systems are based today. Since occurrences in aviation are one of the main sources for aviation safety, taxonomies are used to capture as much detail as possible from an occurrence. On the basis of taxonomies, overviews are regularly created for certain periods. Currently, a systemic approach to safety is increasingly being applied in the domain. The System-Theoretic Accident Model and Processes (STAMP) is one of the systemic safety models that can analyze and investigate complex systems. However, with its introduction into full operation, major changes could arise. One such change would certainly be focused on the currently used aviation safety taxonomies, such as the European Co-ordination Centre for Accident and Incident Reporting Systems (ECCAIRS). In this respect, the goal of this paper is to propose an alignment of the ECCAIRS taxonomy with STAMP, with a focus on event types. The methodology, together with the results, detail the alignment design and validation. The resulting proposal shows how the ECCAIRS taxonomy could support STAMP-based occurrence data processing and, at the same time, it brings new insights that could help to structure the taxonomy in the future.

Stať ve sborníku z mezinár. konf. cizojazyčně

2021, 2021 International Conference on Military Technologies (ICMT), Praha, IEEE Czechoslovakia Section), ISBN 978-1-6654-3724-0

The Safety Data Collection and Processing System (SDCPS) at aviation authorities is an important component for maintaining flight safety. Aviation safety occurrences are often the result of several deficiencies in the system, which brings the need to examine the system as a socio-technical whole. The System-Theoretic Accident Model and Processes (STAMP) is one of the systemic safety prediction models that deals with socio-technical systems and offers a possible solution for new approach to the safety data collection and processing. This paper focuses on the use of STAMP for SDCPS at aviation authorities. The methodology in this paper is based on the use of Business Process Modeling Notation (BPMN) tool for graphical algorithmic representation of processes according to the theory. This approach provides a systemic platform for proposal of safety data collection and processing. The resulting proposal to be used with SDCPS shows how to use the systemic approach of STAMP within current SDCPS systems and compares it with the current practices and standards in the aviation.

Stať ve sborníku z prestižní konf. (Scopus)

2020, 2020 New Trends in Civil Aviation, Praha, IEEE Czechoslovakia Section), p. 81-87), ISBN 978-80-01-06726-0, ISSN 2694-7854

The following paper is focused on safety data collection and processing in the Maintenance, Repair and Overhaul (MRO) organizations. The goal was to propose a way how to collect and process details of safety data using a total systems safety approach. The problem of details of safety data processing worries most of the companies, because there are unique information in it. For the safety analysis processes, one of the key steps was to choose a safety model. The Systems-Theoretic Accident Model and Process (STAMP) systemic safety model was chosen for the purpose. According to the results from the previous research, MRO processes were modeled using Business Process Model and Notation (BPMN). The resulting process model was extended by information needed for STAMP-based analyses. The result is a workflow proposal with several technical details that show how safety data collection and processing can be changed using STAMP. The proposed solution was successfully validated with Czech Airlines Technics a.s. and considered useful base for further development of MRO safety management systems.

Stať ve sborníku z prestižní konf. (Scopus)