Purpose

Aircraft maintenance technician (AMT) is the most critical profession in the aircraft maintenance system. The tasks of a licensed AMT require expertise and involve repetitive physical tasks such as tightening or loosening aircraft parts, carrying or removing parts during long working hours under time pressure and day/night shifts. This study aims to attract attention to the difficult working conditions of AMTs and identify the body parts that are at risk of musculoskeletal disorder (MSD).

Design/methodology/approach

A questionnaire is developed by the authors to gather demographic information, use of hand tools, equipment, use of fall protection, manual material handling (lifting, pushing, pulling), load weight, environmental factors, and MSD discomfort level perceptions. The questionnaire is applied to 150 AMTs during six months period, and the obtained data are analyzed by sequential ordinal logistic regression (OLR) models.

Findings

The ORL results confirm that the use of equipment (lift platform, scissors lift), safety belt attached to the platform, manual material handling, environmental factors (humidity, vibration and illumination) and resting periods have a significant effect on MSD risks. On the contrary, age, experience level, use of small hand tools, temperature and noise are not identified as statistically significant.

Originality/value

The study is original for it considers the working conditions and perceived discomfort levels of AMTs. A questionnaire is introduced to assess the consequences of the use of tools, equipment, fall protection equipment, environmental conditions and work organization on various body parts (neck, shoulder, elbow, back, lower back, wrist-hand, hip, knee, and ankle-feet), and strain level is identified. The study contributes to the theoretical aircraft maintenance literature and managers in practice.

中文翻译：

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针对飞机维修技术人员的基于问卷的肌肉骨骼疾病评估

目的

飞机维修技师（AMT）是飞机维修系统中最关键的职业。获得许可的 AMT 的任务需要专业知识，并且涉及重复的体力任务，例如在时间压力下和昼夜轮班的长时间工作中拧紧或松开飞机零件、搬运或拆卸零件。本研究旨在引起人们对 AMT 艰苦工作条件的关注，并确定存在肌肉骨骼疾病 (MSD) 风险的身体部位。

设计/方法/方法

作者开发了一份调查问卷，以收集人口统计信息、手动工具的使用、设备的使用、坠落保护的使用、手动材料处理（提升、推动、拉动）、负载重量、环境因素和 MSD 不适程度感知。问卷在 6 个月期间应用于 150 个 AMT，并通过顺序序数逻辑回归 (OLR) 模型分析获得的数据。

发现

ORL 结果证实，设备的使用（升降平台、剪式升降机）、连接到平台的安全带、人工搬运材料、环境因素（湿度、振动和光照）和休息时间对 MSD 风险有显着影响。相反，年龄、经验水平、小型手动工具的使用、温度和噪音在统计上并不显着。

原创性/价值

该研究是原创的，因为它考虑了 AMT 的工作条件和感知的不适程度。引入问卷以评估使用工具、设备、防坠落设备、环境条件和工作组织对身体各个部位（颈部、肩部、肘部、背部、下背部、腕手、臀部、膝盖和踝足），并确定应变水平。该研究有助于理论飞机维修文献和实践中的管理人员。