Aircraft engine maintenance stands as a critical aspect of aviation safety and operational efficiency. Traditional methods often rely on periodic inspections and scheduled maintenance routines, which may not fully capture the dynamic conditions and potential anomalies within the engine. This article explores the integration of digital twin technology into aircraft engine maintenance processes, offering real-time monitoring, predictive analytics, and explanations of the role of human factors in aircraft engine maintenance are given and explain simulation capabilities to optimize maintenance strategies and enhance overall reliability. Through a comprehensive review of current practices and emerging trends, this article highlights the potential benefits and challenges of adopting digital twin technology in the aviation industry.