This study describes the design, prototyping, and test evaluation of a 10kVA AC generator for an aircraft. The design was carried out considering the physical requirements, functional requirements, and environmental requirements of the aircraft system. The AC generator performs design verification through electromagnetic design and analysis, structural design and analysis, and thermal / flow analysis, and performs design, development, manufacturing and test evaluation according to the AS9100 quality system. Environmental testing was performed in accordance with the requirements of the RTCA DO-160G, and this document describes the overall process and results from design to test evaluation.