Waste analysis in aircraft production process

Waste is any type of work activity that does not provide added value and it is eliminated, because it can have a negative impact on the company. During the production process, waste can occur due to the operator, the machine, nature, etc. In the production process of aircraft manufacturing at one of Indonesian-aircraft Industries, there are many factors that influence the occurrence of waste; therefore, there is a need to minimize or even eliminate the waste, one of them by using lean manufacturing. In this company, there are three of the biggest waste that occurs during the production process of aircraft, namely Defects, Inventory and Motion waste. From those three wastes, they will be identified which causes the greatest impact on other waste using the Waste Relationship Matrix (WRM) method. The results of the calculation of WRM, found that defect waste has a considerable impact when compared to inventory waste and motion waste, with an average value of 44.02%. So, the company needs to focus on eliminating these wastes, by improving the condition of the production floor, both from the people, methods, machines, or even from the environment.