Rotorcraft is a high-value system, in which a variety of cutting-edge technologies is incorporated, and its civil-military technology compatibility is superior to the other aircraft. In this regard, the development of civil-military helicopters has been carried out continuously. All aircraft operated by the civilian and military require airworthiness certification, a certificate issued by Government ensuring the flight safety. For airworthiness certification, various core technologies are verified, and among them, a thorough verification of bird strikes is required. Accordingly, it is necessary to secure flight safety based on accurate understanding of standards and sufficient review of evidences, however, the relevant researches are not sufficient. In this study, the airworthiness certification standards related to bird strikes of military rotorcraft and actual bird strike cases are analyzed. The results of this study can be used as a guideline for establishing the standards for bird strikes for rotorcraft development projects in the future, and it is expected to contribute to securing the flight safety in the rotorcraft development.