本SAE航空航天信息报告（AIR）涵盖了废磷酸酯航空液压油（AS1241）的产生，该液压油被视为废物，因为其不符合飞机使用的在役限制。本文件还列出了本报告发布时生效的美国环境保护局（U.S.EPA）关于已用液压油的相关法规。在启动此处列出的任何废物处理建议之前，应参考其他国家以及州和市的法规。

This SAE Aerospace Information Report (AIR) covers the generation of used phosphate ester aviation hydraulic fluid (AS1241) that is deemed waste because it does not meet in-service limits for use in aircraft. This document also lists the relevant United States Environmental Protection Agency (U.S. EPA) regulations on used hydraulic fluid that are in force at the time of this report's publication. Regulations of other countries as well as those for states and municipalities should be consulted prior to initiating any of the waste disposal recommendations listed here.