{"title":"Pneumatic System Reliability Assessment for B737NG Operators","authors":"Karel Mündel, A. Lališ, O. Štumbauer","doi":"10.23919/NTCA50409.2020.9291115","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9291115","url":null,"abstract":"This paper deals with the operational issues of aircraft components and their reliability, from the perspective of the aircraft operators. Modern airliners are equipped with advanced ways of data collection of most flight and technical parameters that can be used to optimize their operations. This study deals with the pneumatic system (ATA36 chapter) of the B737NG aircraft that is susceptible to failures in the operations, leading to the aircraft becoming unserviceable for periods of time. A novel approach is proposed to analyze the system behavior by its modeling by means of the Unified Modeling Language (UML) and Fault-tree analysis, using real operational data. Next, this paper proposes simple operational measures than can avoid the aircraft on ground (AOG) states and decrease unexpected expenses due to the system failure. The results show that this new approach is very practical and can have significant effect on the airline operations, largely reducing extra costs and flight delays and allowing for better planning of aircraft maintenace.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"08 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121442954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Functional Resonance of the Airport Passengers Security Check","authors":"J. Havlíček, A. Lališ, Roman Vokáč","doi":"10.23919/NTCA50409.2020.9290934","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9290934","url":null,"abstract":"The aim of this work is evaluation of the process of airport passenger and cabin luggage security check, using methods originally dedicated to safety engineering. The evaluation is based on the Functional Resonance Analysis Method (FRAM) and the applied computation of the model follows existing research on FRAM. Variability for each security check function in terms of time and precision is defined, considering also the external conditions affecting the system. Next, an application is developed, which represents the interface between the FRAM-based calculations and the user. The main goal of the application is evaluation of security check according to the provided measurement inputs and provision of practical representation of the results to the industry experts. The results indicate that FRAM can be used for the purpose of modeling security systems and that the modeling results can help industry experts to identify their weak points, together with suggestions how they could be improved.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132644090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Petr Jonáš, Marián Jančík, Šimon Holoda, Jérôme Bodart
{"title":"Impact of SUAS Equipped with ADS-B on 1090MHz Environment","authors":"Petr Jonáš, Marián Jančík, Šimon Holoda, Jérôme Bodart","doi":"10.23919/NTCA50409.2020.9291095","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9291095","url":null,"abstract":"The number of Small Unmanned Aircraft Systems (SUAS) has greatly increased in recent years. And it is expected that this number will continue increasing in the future. The SUAS may be operated in proximity of aerial vehicles (including aircraft) and it may be necessary to detect them electronically. One possibility is to equip SUAS with Automatic Dependent Surveillance – Broadcast (ADS-B) surveillance system operating on 1090 MHz frequency. The purpose of this study is to investigate the impact of SUAS ADS-B 1090 transmissions on the reception of an aircraft ADS-B Extended Squitter by an ADS-B ground station. The systems being considered operate at low altitudes, typically under 500 ft above ground level (AGL). We found that high number of SUAS equipped with ADS-B flying close to ground ADS-B sensors can have significant impact on the operational range up to 40%.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131382964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Hanakova, V. Socha, J. Boril, L. Herman, J. Strobl, Terézia Pilmannová
{"title":"Subjective Evaluation of Fatigue in Pilots During 24-hour Testing","authors":"L. Hanakova, V. Socha, J. Boril, L. Herman, J. Strobl, Terézia Pilmannová","doi":"10.23919/NTCA50409.2020.9291239","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9291239","url":null,"abstract":"With developing efforts to increase aviation safety, the focus on human factors is being emphasized as well. One of the phenomena affecting the performance of the pilot or other aviation specialists is undoubtedly the fatigue. Dangerous situations can occur, especially when fatigue accumulates. Monitoring fatigue is therefore in the interest of all stakeholders as well as the aviation authorities, which have developed Fatigue Risk Management System. In spite of the fact that the system itself at its highest level also uses the objective data, to this day, the monitoring of fatigue in aviation has mainly been based on a questionnaire survey. Although, the standardized NASA Task Load Index (NASA TLX) is often applied, it remains questionable whether such a questionnaire realistically reflects the fatigue. Based on previously mentioned, the NASA TLX was modified to focus on pilot fatigue and then applied during 24-hour measurements for the purposes of this paper. Eight pilots took part in the measurement, each of them performed 8 simulated flights. From the results of the questionnaire survey, a window of circadian low can be observed, in accordance with the evaluated theta/alpha parameter obtained by spectral analysis of EEG records. The results therefore indicate that such a questionnaire is able to indicate fatigue.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132641983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Applying Distilled BERT for Question Answering on ASRS Reports","authors":"Samuel Kierszbaum, Laurent Lapasset","doi":"10.23919/NTCA50409.2020.9291241","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9291241","url":null,"abstract":"This paper employs the Bidirectional Encoder Representations from Transformers (BERT), a language model, fine-tuned on the question answering task, on the Aviation Safety Reporting System (ASRS) dataset’s free text reports, that describe incident occurrences in an International aviation safety context. A four-step method is used to evaluate the produced results. This paper outlines what are the limitations of this approach, as well as its usefulness in trying to extract information from thirty randomly selected free text reports when asking the following question: “When did the incident happen?”. We aim to try to integrate one of the algorithms resulting of the recent advances in Natural Language Processing (NLP) to leverage information in natural language narratives, as opposed to working directly with the structured part of the ASRS dataset. We find that our approach yields interesting results, with roughly seventy percent correct answers, including answers that have information that is not overlapping with the ASRS dataset’s metadata.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"28 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116346195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Socha, Stanislav Kusmirek, L. Hanakova, Peter Olexa, Jakub Šimerka
{"title":"Portable Reaction Time Measurement Device: Prototype Proposal and Validation","authors":"V. Socha, Stanislav Kusmirek, L. Hanakova, Peter Olexa, Jakub Šimerka","doi":"10.23919/NTCA50409.2020.9290873","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9290873","url":null,"abstract":"This paper is describing the prototype of a new patent of a Portable Reaction Time Measurement Device whose main assets in comparison to the conventional devices for the similar purposes are the portability, independence on the electrical power source, the absence of the personal computer and the immediate readiness for the usage once the device is turned on. The main contribution of this device is, that it allows to test the actual values of the reaction times at any given time and in any given situation without the necessity of the complicated hardware or software set-ups. It’s construction allows to be used in e.g. the pre-flight psycho-physiological assessment’s of the pilots directly short before the flight conduction or monitoring the daily fluctuation of the reactions readiness directly in the work environment of the concerned study subjects. The basic electrical scheme and the hardware and software components are presented. Furthermore, there was a successful experiment proposed and conducted to test the technical functionalities. Also the usability validation and comparison has been made with the positive outcomes.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132731585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impacts of Neglecting Atmospheric Conditions on Aircraft Noise Monitoring","authors":"I. Kameníková, Tomáš Hejzlar","doi":"10.23919/NTCA50409.2020.9290838","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9290838","url":null,"abstract":"Subject of artictle “Impacts of Neglecting Atmospheric Conditions on Aircraft Noise Monitoring” is an analysis of results of noise measurement during diverse atmospheric limits which are ensuring data validity according to both international and national methodology. Final analysis aims to show how individual conditions affect ultimate outcome comparable to health limits.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124885348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recognition of GNSS Jamming Patterns in ADS-B Data","authors":"P. Lukeš, Tereza Topková, T. Vlček, S. Pleninger","doi":"10.23919/NTCA50409.2020.9291039","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9291039","url":null,"abstract":"With the increasing dependency on the Global Navigation Satellite System (GNSS) for navigation and surveillance, aviation is focusing on mitigation of threats caused by a possible system unavailability due to jamming or spoofing. This research deals with pattern recognition of the time evolution of quality indicators in transmitted Automatic Dependent Surveillance - Broadcast (ADS-B) messages during GNSS jamming in non jammed data over Central Europe. An evaluation of the quality indicators from all messages within a one month interval is presented. A practical jamming experiment was done to determine how the quality indicators are changing during a jamming presence. Afterwards, the results of the experiment are used as a foundation for the proposed jamming detection technique using ADS-B data based on pattern recognition and cluster analysis. A natural presence of a quality indicators variability is proven in the data using these methods, similar to the indicators variability during GNSS jamming.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117102676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Benefit of New EASA Part M-Light","authors":"M. Šplíchal, J. Chlebek","doi":"10.23919/NTCA50409.2020.9291217","DOIUrl":"https://doi.org/10.23919/NTCA50409.2020.9291217","url":null,"abstract":"The article discusses the potential benefits of the new EASA regulation - Part M Light, which entered into force on March 24, 2020. This regulation is intended to simplify the administration and some processes in General Aviation maintenance. A positive attitude of the national aviation authorities is essential to achieve the positive benefits of the new regulation. The reactions of some national aviation authorities follows concern about the possible impact on safety, so the article a comparison of safety performance between categories GA and ultralight planes that have the minimum of maintenance requirements. A special attention is focused on the powerplant, which has a major safety impact.","PeriodicalId":198861,"journal":{"name":"2020 New Trends in Civil Aviation (NTCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131250600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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