本文件讨论了耐久性要求的历史和发展，提供了对试验污染材料的分析，并包括对未来要求的讨论。本文件为读者提供了部件设计评估工程师所需的飞机涡轮发动机燃油系统部件耐久性测试要求的背景。

This document discusses the history and development of endurance requirements, provides an analysis of test contaminant material and includes a discussion of future requirements.This document provides the reader with a background of aircraft turbine engine fuel system component endurance test requirements needed by engineers working on component design evaluation.