A Study on the Improvement of the Domestic Maintenance Capability Development System of Military for Overseas Maintenance Items through the Case Study of Intermittent Failure of an Avionics

항전계통 간헐결함 사례 분석을 통한 군의 해외 정비품 국내정비능력 개발제도 개선방안 고찰

A flare from an Air Force fighter was abnormally dispensed during the landing. To determine the cause of the abnormal dispensing, fracture analysis, signal analysis and reproduction experiments based on physics of failures were performed. The primary cause of the failure was analyzed to be due to an intermittent fault of an internal circuit card in the AN/ALE-40 chaff/flare dispenser by a broken lid of a capacitor, and the root cause which had derived the primary cause was considered to be an improper handling during the domestic maintenance which were changed from the overseas maintenance due to the DMSMS problem. Therefore, the overall process of the maintenance capability development system was reviewed and alternative ways that considers maintenance error decision aid(MEDA) for system improvement were suggested to prevent further failures.