本文依据中国民用航空规章第25部(CCAR25部)及咨询通告AC25-18,探讨了运输类客机改成全货型或客货混合型飞机时的设计要求和验证要求。随着世界经济的缓慢复苏,全球航空货运开始活跃,亚太地区今年上半年的航空货运市场率先出现正增长。相对于客运市场, This article explores the design requirements and verification requirements for the transport of passenger aircraft to full cargo or mixed cargo and passenger aircraft, in accordance with Part 25 of the Civil Aviation Regulations of China (CCAR Part 25) and Advisory Circular No. AC25-18. With the gradual recovery of the world economy and the global air cargo market becoming more active, the air cargo market in the Asia Pacific region took the lead in positive growth in the first half of this year. Relative to the passenger market,