This study investigates the characteristics, development trends, and airworthiness criteria of key technologies of electric propulsion systems for electric aircrafts. Additionally, previously developed airworthiness certifications for electric aircrafts and propulsion systems were analyzed, and the characteristics of each airworthiness criterion were comparatively analyzed. In conclusion, it is believed that the electric propulsion system for military aircrafts can be applied for developing separated airworthiness criteria by modifying SC-E-19, SC-VTOL, ‘Standard airworthiness certifications for military aircraft Part 3’.