在航空器的制造和使用过程中,为保持和改进零部件、系统和整机的可靠性,要不断地颁发适航指令和服务通告对其进行改装,所以适航指令和服务通告的执行是贯穿于制造到报废的全过程。它涉及初始适航和持继适航二个方面,在执行过程中应注意这方面的衔接。中国民用航空规章39部《民用航空器适航指令规定》明确规定:“在中华人民共和国登记注册的民用航空器的所有人和使用人必须保证其使用的 During the manufacture and use of aircraft, in order to maintain and improve the reliability of components, systems and complete machines, airworthiness directives and service bulletins should be continuously issued to modify them. Therefore, the implementation of airworthiness directives and service bulletins is carried out throughout In the manufacture of scrapped the entire process. It involves two aspects: initial airworthiness and airworthiness. During the implementation, it should pay attention to this connection. China Civil Aviation Regulations 39 “Civil Aviation Airworthiness Directive” clearly states: "The civil aircraft registered in the People’s Republic of China and the user must ensure that the use of its