15. 请秘书长制定明确的框架和准则，以确定除其他外用以购买包括航空服务在内的不同类型货物和服务所应采用的招标程序(招标书或征求建议书)，并相应更新《联合国采购手册》；
15. Requests the Secretary-General to establish clear frameworks and guidelines to determine the solicitation procedure, whether invitation to bid or request for proposal, to be utilized for, inter alia, acquiring different types of goods and services, including aviation services, and to update the United Nations Procurement Manual accordingly;