• Journal of the Korean Society for Aviation and Aeronautics
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• v.29 no.1
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• pp.9-19
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• 2021

This thesis researched student pilots at certified flying school to prove several things as follows. First, this study tried to find out the influence of instructor's leader trust to student pilot. Second, this study also tried to investigate the influence of student pilot's psychological stability from leader trust. Third, this study tried to prove the mediation effect of leader trust between flight instructor's transformation leadership and the student pilot psychological stability. The result of empirical research are as follows. First, the result of the verification of the relationship between transformative leadership and trust of leader showed that transformative leadership has a positive (+) influence to trust of leader. Second, the result of verification between leader trust and psychological stability relationship showed that trust of leader gives positive(+) influence to psychological stability. Third, the result of verification between transformative leadership and psychological stability showed that trust of leader gives positive(+) influence to psychological stability. I discussed implication from this study at the end and presented future research direction.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.29 no.1
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• pp.1-8
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• 2021

Low level wind shear, which often occurs at Jeju International Airport, is a phenomenon that occurs when the topological location and topographical characteristics of Jeju Island are combined with weather characteristics. Low level wind shears, which are caused by rapid changes in wind direction and wind speed, pose a threat to aircraft safety and also cause abnormal situations, such as aircraft go-around, diversion, and cancellation. Many meteorological studies have been conducted on weather patterns, occurrence periods and frequency of low level wind shears. However, researches related to aircraft operations are limited where here we study the similarities and differences between strong southwest winds and bidirectional tailwind type low level wind shears based on aircraft go-around cases at Jeju International Airport. The results are expected to be used to enhance safety when operating to Jeju International Airport, which includes pilot training that reflects the characteristics generated by wind changes, pilot prior notification, providing pilots with latest trends, and increasing extra fuel.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.29 no.1
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• pp.47-60
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• 2021

Just culture is an important factors in safety culture, and is related to the degree to which potential risk information is shared. Since the importance of the level of just culture has been highlighted in the aspect that it is related to the prevention of various safety accidents, research on just culture was required. In previous studies, there are attempts to develop a scale to measure the level of just culture and to reveal the degree of predicting the experience of accidents or errors and the actual reporting experience. However, It was not possible to clarify the factors that facilitate and inhibit the level of just culture for the formation of just culture. This study was conducted to help improve the level of the organization's just culture by specifically identifying factors that facilitate and inhibit the impact on the level of the just culture. As a result, it was possible to find the facilitating and inhibiting factors affecting the 6 factors of just culture.

• Journal of Astronomy and Space Sciences
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• v.39 no.2
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• pp.51-57
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• 2022

Cosmic radiation exposure of the flight crews in Korea has been managed by Radiation Safety Management around Living Life Act under Nuclear Safety and Security Commission. However, the domestic flight crews are excluded from the Act because of relatively low route dose exposure compared to that of international flight crews. But we found that the accumulated total annual dose of domestic flight crews is far from negligible because of relatively long total flight time and too many flights. In this study, to suggest the necessity of management of domestic flight crews' radiation exposure, we statistically analyzed domestic flight crew's accumulative annual dose by using cosmic radiation estimation models of the Civil Aviation Research Institute (CARI)-6M, Nowcast of Atmospheric Ionizing Radiation for Aviation Safety (NAIRAS), and Korean Radiation Exposure Assessment Model (KREAM) and compared with in-situ measurements of Liulin-6K LET spectrometer. As a result, the average exposure dose of domestic flight crews was found to be 0.5-0.8 mSv. We also expect that our result might provide the basis to include the domestic flight crews as radiation workers, not just international flight attendants.

• Korean journal of aerospace and environmental medicine
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• v.30 no.1
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• pp.40-49
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• 2020

In accordance with ICAO SARPs, the states should implement appropriate aviation-related health promotion for airmen subject to an aviation medical examination to reduce future medical risks to flight safety. We aimed to analyze the results of the aviation medical examination to use as objective evidence for establishing an aviationrelated health promotion plan. The results of the final issuance of airmen medical certificate from 2015~2017 were collected from the e-sky computer system. The 30 cases (0.3%) in 2015, 22 cases (0.2%) in 2016, 38 cases (0.3%) in 2017 were unfit for flight duty. The 34 unfit out of the total 90 cases were renewal physical examinations. The cardiovascular disease was most commonly in 11 cases, followed by 8 tumors, 4 psychiatric diseases, 3 ophthalmic diseases, 2 respiratory diseases, 2 neurologic diseases, 2 otolaryngological diseases, 1 endocrine disease and 1 digestive disease. The results of this study can be used as objective data in aviation-related health promotion plan. The health promotion activities based on objective data can contribute to improving aviation safety by improving the lifestyles of airmen.

• Korean journal of aerospace and environmental medicine
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• v.30 no.3
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• pp.86-90
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• 2020

Coronavirus disease 2019 (COVID-19) has had a significant impact on our society as a whole. The COVID-19 pandemic is not only a health crisis, it is also an economic, social and humanitarian crisis. Considering the dramatic global economic and social impact that the crisis has engendered, the aviation system is standing on the doorstep of rapid transformation. In particular, the impact on the aviation and travel industries is enormous. Air travel to most countries has been suspended and blocked. Looking at Korea's current situation, COVID-19 has wholly changed the aviation industry. As COVID-19 spreads around the world, countries have come up with aviation safety measures. Infectious disease safety measures were established to protect passengers and crew members, and countries with collapsed medical systems extended the validity period for aviation medical examinations. In Korea, on August 11, the Ministry of Land, Infrastructure and Transport provided guidance on medical measures related to COVID-19 through an official letter of "Notification of cautions for pilots and air traffic control officers (ATCO) when COVID-19 is confirmed". Overseas countries such as the United States and the United Kingdom have announced regulations for aviation medical examination regulations in relation to COVID-19, and have set standards for returning to aviation after COVID-19 is confirmed. In this paper, we would like to investigate the regulations for aviation medical examination related to COVID-19.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.30 no.4
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• pp.215-221
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• 2022

본 연구는 민간항공 조종사 훈련 및 평가에 중요하게 고려되고 있는 8가지 핵심 역량 향상을 위한 기초자료 마련을 위해 수행되었으며, 그 중 가장 중요하다고 판단되는 상황인식(situation awareness) 및 작업부하 관리에 대해 분석하였다. 예비 조종사를 대상으로 항공기 접근 및 착륙 단계를 진행하는 동안 PM(pilot monitoring) 역할을 수행하며 인식하는 항공기 상황과 작업부하량에 대해 평가하였다. 평가 시나리오는 기본비행훈련장치(basic aviation training device)를 사용하여 지형적 상황인식, 공간/시간적 상황인식, 시스템 상황인식, 환경적 상황인식을 평가할 수 있는 요소로 구성하였으며, 모니터링 도중 의도적인 주의분산 상황을 추가하였다. 연구 결과, 전체 비행 단계에 대한 상황인식은 32.3%이고, 지형적 상황인식(60.3%)이 가장 높고, 시스템 상황인식(18%)이 가장 낮은 것으로 나타났다. NASA-TLX 평가방법으로 측정한 작업부하량은 10.8점(20점 만점)으로 나타났다. 또한, 기초공중항법학을 수강한 예비 조종사들이 대체로 높은 상황인식을 하였고, 작업부하 결과는 지형적 상황인식과 밀접한 상관관계를 가지고 있었다.

• Journal of Advanced Navigation Technology
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• v.27 no.3
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• pp.274-280
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• 2023

The Fix-to-Fix Navigation is the technique for aircraft pilots to find out estimated Heading when crossing from present fix to other fix to want to go in the air. Because this is based on the Rule of Thumb method from one's experience, it could not find out exact estimated Heading. Furthermore if the pilot nears going fix, Bearing Pointer and Course Indicator of HSI are too close to use this technique, that makes the pilot lost in the air. In this paper, We take Limits of Trigonometric Functions into the Fix-to-Fix Navigation to overcome these disadvantages. This study introduces two solutions using Limits of Trigonometric Functions when doing Fix-to-Fix Navigation and analyzes the error of this solutions.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.31 no.1
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• pp.43-56
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• 2023

The aviation industry has continued to grow despite the influence of external environmental factors such as SARS and MERS. However, this growth has led to a sharp decrease in air traffic and a crisis of flight suspension due to the collapse of the global value chain and the decline of the world economy as the World Health Organization (WHO) declared a COVID-19 pandemic. Due to the decrease in the number of international flights, aviation workers such as pilots and cabin crew were exposed to high psychological stress and fatigue, such as large-scale layoffs, job instability, decrease in income, and increased risk of infection during. Recently, the international community has eased immigration restrictions through quarantine activities, and airlines are taking a step further to recover existing air demand. However, during the crisis period, a significant number of professional workers have been turned off or fired, and the physical and mental fatigue of those who can perform their duties is increasing. Therefore, this paper intends to examine the direction of policy improvement and the identification of problems in aviation safety and fatigue management after the pandemic.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.31 no.2
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• pp.100-107
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• 2023

This study intends to present the UAM pilot qualifications and training and education systems based on the roadmap of technology for K-UAM operation system, which is being promoted for commercialization in 2025. There are currently about 250 eVTOL manufactures around the world, and they are gearing up to produce a variety of UAM aircrafts. In Korea, 35 companies including Hyundai Motor company, Korean Air, Lotte and SKT are accelerating the development of UAM aircrafts. UAM is being developed as a public goods concept centered on public transportation and urban aviation rather than private transportation. Therefore, the UAM pilot qualification and education and training system should be suitable for operations in densely populated areas and complex urban enviroments. In other words, in order to ensure safe UAM operations, the competencies and qualifications of UAM pilots should be clearly established.