本文件提供了信息背景、基本原理和技术案例，以考虑AS8049B中包含的飞机座椅结构中镁合金限制的移除。这一论点的基础是FAA在威廉·J·休斯技术中心（FAATC）在新泽西大西洋城的消防安全部门进行的易燃性表征工作。美国。本文介绍了基本原理和详细测试结果，以及易燃性报告，这些报告得出结论，在飞机座椅结构中使用特定类型的镁合金不会增加坠机后火灾场景中客舱的潜在危险水平。此外，美国联邦航空局还开发了一种实验室规模的试验方法，参考DOT/FAA/TC-13/52，用作认证试验，或符合性方法（MOC），以允许在管理TSO中使用镁的可接受性- C127和TSO-C39C。AIR文件中还引用了其他可燃性研究，以证实FAA的发现。

This document provides informational background, rationale and a technical case to allow consideration of the removal of the magnesium alloy restriction in aircraft seat construction as contained in AS8049B. The foundation of this argument is flammability characterization work performed by the FAA at the William J. Hughes Technical Center (FAATC), Fire Safety Branch in Atlantic City, New Jersey, USA. The rationale and detailed testing results are presented along with flammability reports that have concluded that the use of specific types of magnesium alloys in aircraft seat construction does not increase the hazard level potential in the passenger cabin in a post-crash fire scenario. Further, the FAA has developed a lab scale test method, reference DOT/FAA/TC-13/52, to be used as a certification test, or method of compliance (MOC) to allow acceptability of the use of magnesium in the governing TSO-C127 and TSO-C39C.Other flammability studies are also cited in the AIR document to substantiate the FAA findings.