REDUCTION OF DEFECT RATE IN THE LINE MAINTENANCE INSPECTION PROCESS USING SIX SIGMA METHOD IN AN INDONESIAN AIRLINE.

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Published: Nov 28, 2024

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Uti Roysen
Mercu Buana University
Imbuh Rochmad
Mercu Buana University
Rahmat Rahmat
Sains Indonesia University
Puti Lenggo Ginny
Buddhi Dharma University
Singgih Juniawan
Mercu Buana University
D Daruki
Mercu Buana University
Krim Ulwy
An-Nikmah Al-Islamiyah Institute , Malaysia

Abstract

An airline in Indonesia conducted an average of 21 inspection activities on 99 Boeing Series aircraft during the period from January 2024 to June 2024. The company aims to improve efficiency by reducing the number of inspections to 5 activities per aircraft. This study aims to determine the current sigma level, identify the root causes of the high number of inspection occurrences, evaluate the outcomes of the implemented solutions, and determine the sigma level after the improvements. The research employs Six Sigma methodology and 5W1H. The results indicate that the primary causes of defects were insufficient training for engineers/mechanics, poor component quality, and outdated inspection tools. After implementing corrective actions such as retraining, updating SOPs, replacing low-quality components, and upgrading inspection tools, defects were reduced from 2,055 occurrences on 99 aircraft to 400 occurrences on 73 aircraft. Consequently, the DPMO decreased from 104,309 to 27,534.93, and the sigma level improved from 2.796 to 3.214. This study demonstrates that a systematic Six Sigma approach can enhance efficiency and quality in aircraft maintenance..

Article Details

Issue
ICEAST 2024
Section
Articles
Author Biographies

Uti Roysen, Mercu Buana University

Mercu Buana University

Imbuh Rochmad, Mercu Buana University

Mercu Buana University

Rahmat Rahmat, Sains Indonesia University

Sains Indonesia University

Puti Lenggo Ginny, Buddhi Dharma University

Buddhi Dharma University

Singgih Juniawan, Mercu Buana University

Mercu Buana University

D Daruki, Mercu Buana University

Mercu Buana University

Krim Ulwy, An-Nikmah Al-Islamiyah Institute , Malaysia

An-Nikmah Al-Islamiyah Institute , Malaysia

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