Performance assessment of a potential maintenance strategy for legacy avionic systems

This study presents an approach that could be used to appraise the performance of a potential maintenance strategy tailored to maintain legacy avionic systems. A potential maintenance strategy for legacy avionic systems with the appropriate metrics to ascertain its performance, supportability and the required life cycle cost associated with the usage of this maintenance strategy was presented. Avionic subsystems operational and failure data for a period of ten years, literature information and experts' opinions on the lifecycle cost and supportability requirements for the potential avionic systems maintenance strategy were analysed to ascertain the veracity of deploying this maintenance solution. This study revealed that the potential maintenance strategy earmarked for avionic system maintenance, is expected to have a mean time between failure, operational availability, mean time to repair, lifecycle cost and logistical supportability index of 53.4 hours, 0.92, 1.06 hours, $1,219,029.55 and 59 respectively.