Implementation of Six Sigma Method

Oct 13, 2025 by wbrum.org 65 views

Introduction

PT. Dirgantara Indonesia (Persero) is a leading company in the aircraft industry, producing high-quality products such as the D-Nose Panel A350. However, research conducted at PT. Dirgantara Indonesia reveals that there are significant defects in the D-Nose Panel A350 product, with an average percentage of defects of 4.96%. This exceeds the company's specified limit of 1%. To address this issue, the purpose of this study is to identify the source of quality problems and analyze product quality control using the Six Sigma approach. The ultimate goal is to minimize the number of defects in the D-Nose Panel A350 production.

Background of the Study

The D-Nose Panel A350 is a critical component of the aircraft, responsible for distributing aerodynamic loads received by wings during flight. However, the high percentage of defects in this product poses a significant risk to the company's reputation and customer satisfaction. The most common types of defects are corrosion, strain, and contour inaccuracy during 12 production periods. To address this issue, it is essential to identify the root causes of these defects and implement effective quality control measures.

Methodology

This study employed the Six Sigma approach to analyze product quality control and identify the source of quality problems. The Six Sigma method is a data-driven approach that aims to reduce defects and variations in business processes. The study involved four basic causes of defects, namely machine factors, materials, methods, and humans. Through the definition stage, the human factor and work methods during the production of the A350 D-Nose Panel were identified as the most critical factors that cannot be called standard.

Analysis of Defects

The analysis of defects revealed that there are many steps that can be taken to overcome this disability problem. First, improvements in human factors can be done by increasing the ability and skills of operators, as well as implementing a better system of changing work. This will ensure that each operator has adequate knowledge and skills to carry out their duties efficiently.

Second, in terms of material factors, the selection of raw material suppliers must be done carefully, and ensure that the material used is in accordance with established standards. Quality materials will reduce the possibility of defects caused by incompatibility of materials.

Third, repairs in engine factors include an outdated engine replacement and conduct regular scheduled inspections. Thus, the machine used in the production process will always be in optimal conditions, so as to reduce the risk of defects due to engine damage.

Fourth, for the method factor, improvements can be achieved by ensuring that the production methods are applied in accordance with Standard Operational Procedures (SOP). By following the specified SOP, the production process can run more structured and controlled.

Implementation of Six Sigma Method

The application of the Six Sigma method in quality control will not only help in identifying and fixing existing problems, but also contributes to increasing the efficiency and effectiveness of the overall production process. Thus, the company not only meets the expected quality standards, but also increases customer satisfaction and competitiveness in the aircraft industry market.

Conclusion

In conclusion, this study has identified the source of quality problems and analyzed product quality control using the Six Sigma approach. The results of this study have shown that there are many steps that can be taken to overcome this disability problem. By implementing improvements in human factors, material factors, engine factors, and method factors, it is expected that PT. Aerospace Indonesia can significantly reduce the number of defects in the D-Nose Panel Production. The application of the Six Sigma method in quality control will contribute to increasing the efficiency and effectiveness of the overall production process, thus meeting the expected quality standards and increasing customer satisfaction and competitiveness in the aircraft industry market.

Recommendations

Based on the findings of this study, the following recommendations are made:

Improvement in Human Factors: Increase the ability and skills of operators, as well as implement a better system of changing work.
Selection of Raw Material Suppliers: Carefully select raw material suppliers and ensure that the material used is in accordance with established standards.
Repairs in Engine Factors: Replace outdated engines and conduct regular scheduled inspections to ensure that the machine used in the production process is in optimal conditions.
Implementation of SOP: Ensure that the production methods are applied in accordance with Standard Operational Procedures (SOP) to run the production process more structured and controlled.

By implementing these recommendations, it is expected that PT. Aerospace Indonesia can significantly reduce the number of defects in the D-Nose Panel Production and increase customer satisfaction and competitiveness in the aircraft industry market.

Limitations of the Study

This study has several limitations, including:

Limited Sample Size: The study was conducted on a limited sample size, which may not be representative of the entire population.
Data Collection Method: The study relied on secondary data, which may not be accurate or up-to-date.
Analysis Method: The study employed a qualitative analysis method, which may not be suitable for all types of data.

Future Research Directions

Future research directions include:

Conducting a Larger-Scale Study: Conducting a larger-scale study to gather more data and increase the generalizability of the findings.
Using a Quantitative Analysis Method: Using a quantitative analysis method to analyze the data and increase the accuracy of the findings.
Investigating Other Factors: Investigating other factors that may contribute to the defects in the D-Nose Panel A350 production.

By addressing these limitations and future research directions, it is expected that the findings of this study can be further validated and generalized to other contexts.

Q: What is the purpose of this study?

A: The purpose of this study is to identify the source of quality problems and analyze product quality control using the Six Sigma approach to reduce product defects in the D-Nose Panel A350 production.

Q: What are the most common types of defects in the D-Nose Panel A350 product?

A: The most common types of defects are corrosion, strain, and contour inaccuracy during 12 production periods.

Q: What are the four basic causes of defects in the D-Nose Panel A350 production?

A: The four basic causes of defects are machine factors, materials, methods, and humans.

Q: What are the recommendations for improving human factors in the D-Nose Panel A350 production?

A: The recommendations for improving human factors include increasing the ability and skills of operators, as well as implementing a better system of changing work.

Q: What are the recommendations for selecting raw material suppliers in the D-Nose Panel A350 production?

A: The recommendations for selecting raw material suppliers include carefully selecting raw material suppliers and ensuring that the material used is in accordance with established standards.

Q: What are the recommendations for repairing engine factors in the D-Nose Panel A350 production?

A: The recommendations for repairing engine factors include replacing outdated engines and conducting regular scheduled inspections to ensure that the machine used in the production process is in optimal conditions.

Q: What are the recommendations for implementing Standard Operational Procedures (SOP) in the D-Nose Panel A350 production?

A: The recommendations for implementing SOP include ensuring that the production methods are applied in accordance with SOP to run the production process more structured and controlled.

Q: What are the benefits of applying the Six Sigma method in quality control in the D-Nose Panel A350 production?

A: The benefits of applying the Six Sigma method in quality control include increasing the efficiency and effectiveness of the overall production process, meeting the expected quality standards, and increasing customer satisfaction and competitiveness in the aircraft industry market.

Q: What are the limitations of this study?

A: The limitations of this study include a limited sample size, reliance on secondary data, and a qualitative analysis method.

Q: What are the future research directions for this study?

A: The future research directions include conducting a larger-scale study, using a quantitative analysis method, and investigating other factors that may contribute to the defects in the D-Nose Panel A350 production.

Q: What are the implications of this study for PT. Dirgantara Indonesia (Persero)?

A: The implications of this study for PT. Dirgantara Indonesia (Persero) include the potential to reduce the number of defects in the D-Nose Panel A350 production, increase customer satisfaction and competitiveness in the aircraft industry market, and improve the overall efficiency and effectiveness of the production process.

Q: What are the implications of this study for the aircraft industry?

A: The implications of this study for the aircraft industry include the potential to improve the quality and reliability of aircraft components, reduce the risk of defects and failures, and increase customer satisfaction and competitiveness in the market.

Q: What are the implications of this study for future research?

A: The implications of this study for future research include the potential to investigate other factors that may contribute to defects in the D-Nose Panel A350 production, develop new methods and tools for quality control and improvement, and apply the Six Sigma method in other industries and contexts.