Abstract: Establishment of the airworthiness requirements on BeiDou Naigation Satellite System(BDS) airborne equipment is the premise of the BDS application in civil aviation areas. However, the current international GNSS-related airworthiness standards are not applicable to BDS airborne equipment due to the differences in constellation structure, signals and functions between GPS and BDS. The development of BDS-Civil Aviation Industry is seriously restricted by the lack of standards, and urgently needs independent research and formulation. Aiming at the functions and scenarios of the first stage of BDS applications in civil aviation, i.e. using it only for aircraft tracking, this paper analyses the applicability of current reference standards, defines the formulation strategy and framework of airworthiness requirements, and proposes a set of airworthiness requirements for BDS airborne equipment only for aircraft tracking by the comprehensive consideration of the airworthiness safety, the urgent need for BDS airborne equipment in civil aviation, the development direction of future airborne equipment, and the current industrial level. This study also forms certification elements and review requirements, which can support the industry's understanding of airworthiness standards.

Key words: airworthiness certification, aircraft tracking, BDS RNSS unit and antnna, BDS RDSS unit and Antnna, antenna integration design