Technical Failures in Helicopters: Non-Powerplant-Related Accidents

IF 1.8 Q3 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

Safety Pub Date : 2023-02-22 DOI:10.3390/safety9010010

Alex de Voogt, Keyashia Nero

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Abstract

Technical failures in helicopters are a main concern for helicopter safety. The prominence of mechanical failures differs for specific helicopter operations. This analysis used 151 General Aviation accident reports from the National Transportation Safety Board online database from an 11-year time period. The information in each report was collated, including the list of findings for each accident. Possible relations between causes and specific flight operations were analyzed by looking at significant differences between expected and actual values within the dataset of categorical data. It is found that the proportion of fatal accidents in this category of accidents is low (16.6%) compared with the percentage of fatal helicopter accidents in general, as well as those of specific helicopter operations. Instructional flights appear significantly more likely to be associated with maintenance-related causes. Causes related to fatigue of aircraft parts are more often associated with ferry and positional flights, as well as helicopters with turbo-shaft engines. Future research is recommended for these specific associations to further mitigate the number of accidents with non-powerplant failures.

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直升机技术故障：与发电厂无关的事故

直升机的技术故障是直升机安全的主要问题。机械故障的突出程度因直升机的具体操作而异。这项分析使用了美国国家运输安全委员会在线数据库中11年来的151起通用航空事故报告。每份报告中的信息都经过整理，包括每次事故的调查结果清单。通过观察分类数据数据集中预期值和实际值之间的显著差异，分析了原因与具体飞行操作之间可能存在的关系。研究发现，这类事故中致命事故的比例较低(16.6%)，与一般直升机致命事故的百分比相比，以及与特定直升机操作的百分比相比。教学飞行似乎更有可能与维修相关的原因有关。与飞机部件疲劳有关的原因通常与渡轮和位置飞行有关，以及带有涡轮轴发动机的直升机。未来的研究建议这些具体的联系，以进一步减少与非动力装置故障事故的数量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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