本标准中穿插了注释/指导说明。这些注释/指导说明由标题和斜体文本标识。 本标准定义了一系列要求，这些要求使特定AM机器能够生产符合航空航天材料规范的材料（见GN1）。机器控制和/或配置类型将在下一节中讨论。行业（包括AIA和ASTM）通常承认AM机器有三个鉴定里程碑；然而，本文件将只关注最初的两个阶段，即: •安装确认（IQ）:提供客观证据，证明工艺设备和辅助系统安装的所有关键方面符合AM零件制造商的规范，并适当考虑了设备供应商的建议；这与特定的机器序列号有关。 •运行确认（OQ）:建立充分的过程控制，以保持稳定的材料性能，并证明可以满足材料规范要求；这也与特定的机器序列号相关（参见GN2）。

This standard has notes/guidance narratives interspersed throughout. These notes/guidance narratives are identified by a header and by text in italics. This standard defines a series of requirements that results in a specific AM machine qualified to produce material (see GN1) in compliance to an aerospace materials specification. The machine control and/or configuration types are discussed in the next sections. The industry (including AIA and ASTM) generally acknowledges that there are three qualification milestones for AM machines; nevertheless, this document will focus only on the initial two stages, namely: • Installation Qualification (IQ): Producing objective evidence to show that all key aspects of the process equipment and ancillary system installation adhere to the AM Part Producer's specification and that the recommendations of the supplier of the equipment are suitably considered; this is tied to a specific machine serial number. • Operational Qualification (OQ): Establishing sufficient process control to maintain stable material performance and demonstrating that the material specification requirements can be met; this is also tied to a specific machine serial number (see GN2).