Aviation accidents still hit the news even though the growth of technological advancement on commercial aircraft avionic systems has been impressive. Hence, one of the objectives of this study is to plot the time-based graph of commercial aviation accidents, with direct consequence from avionics instrumentations in the period of two decades, from 1996 to 2015. The second objective is to analyse two main aircraft manufacturers, Boeing and Airbus, in determining specific model of its kind that significantly involved in avionics-related instrumentation as one of the contributing factors that leads to the incidents or accidents. The third objective is to identify which avionics system that most frequently involved in aviation incidents, for both manufacturers. The final objective is to examine the main probable cause that has the highest percentage in those accidents within the said time frame. The method of collecting data is by doing comparative analysis from reliable official websites of four well-known bodies such as National Transportation Safety Board (NTSB), Federal Aviation Administration (FAA), Aviation Safety Network and Flight Safety Foundation. Results show that misfortune occurrences are directly associated with avionics within the said two decades, which mainly involved Autopilot and Flight Management System (FMS) (14% each), meanwhile the aircraft model Boeing 737 carries the highest percentage of avionics-related incidents or accidents. Nonetheless, 67% of the misfortune occurrences within the scope of study are mainly due to human error instead of technology.
Abstract. Documentation errors and human errors are often claimed to be the contributory factors for aircraft maintenance mistakes. This paper highlights the preliminary results of the third phase of a four-phased research on communication media that are utilised in an aircraft maintenance organisation. The second phase has looked into the probability of success and failure in completing a task by 60 subjects while in this third phase, the same subjects have been interviewed immediately after completing the task by using Root Cause Analysis (RCA) method. It is discovered that the root cause of their inability to finish the task while using only written manual is the absence of diagrams. However, haste is identified to be the root cause for the incompletion of the task when both manual and diagram are given to the participants. It is observed that those who are able to complete the task is due to their reference to both manual and diagram, simultaneously. IntroductionCommunication plays the pivotal role in conveying the critical information in any aircraft maintenance organisation. Many previously conducted researches suggest that human mistakes and documentation errors have contributed to the aircraft delays, incidents and accidents [1][2][3][4][5][6][7][8][9][10][11]. Human errors are related to poor language proficiency, inexperience, lack of knowledge, misunderstood or unused information and time constraint. In the meantime, documentation errors can be attributed to incorrect, insufficient or unavailable information. Written media such as manuals, emails and software have a higher risk in conveying critical information in an aircraft maintenance organisation compared to verbal media [12]. Misunderstanding transpires from written information that has been transferred between departments could affect the aircraft's safety and efficiency. This is supported by the argument that the richness of information through written media is lacking, thus it creates ambiguity [13,14]. The vagueness of the message in written media can have serious effects when maintenance personnel perform their task by referring to these task cards and maintenance manuals that contain unclear, incorrect and insufficient information. With this notion in mind, this study looks into the root cause of the ability and inability to assemble and install the components by referring to manual with or without diagram.
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