All industrial sectors have been affected by the COVID-19 epidemic. It has a negative influence on the aircraft MRO industry, notably in the aviation industry. The goal of this research is to determine the strategy of aviation MRO companies in Indonesia prior to the COVID-19 epidemic, throughout the pandemic year, and when the pandemic cases started to fall, as well as to understand the influence of this strategy on corporate performance. This study was conducted by directly interviewing the company's Director of Operations. The analysis determined that the company employed a Cost Leadership strategy, and the company's success in winning tenders in 2015, 2018, and 2020 demonstrated that the approach was successful. Due to the dramatic drop in the number of flights in the commercial sector during the early years of the COVID-19 epidemic, the company's emphasis shifted changed from moving in both the commercial and government sectors to moving primarily in the government department. However, after the case of the COVID-19 pandemic has subsided, — for example, after 2021, the company will gradually resume work in the commercial and government sectors.

Keywords
COVID-19, MRO Company, Cost Leadership, SWOT Analysis, Porter's Strategy.