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.