本航空航天信息报告（AIR）描述了一个有限的发动机监控系统，可供机组或维修人员使用，或两者都使用，以监控飞机燃气轮机发动机的健康状况。该空气流量计考虑了气路性能和机械参数的监测，以及低周疲劳计数器和发动机历史记录仪等系统。它还考虑了典型的测量系统精度及其影响。该空气流量旨在作为技术指南。它不打算用作法律文件或标准。 AIR 1873补充了ARP 1587《飞机燃气轮机发动机监控系统指南》。

This Aerospace Information Report (AIR) describes a Limited Engine Monitoring System that can be used by the flight crew or the maintenance staff, or both, to monitor the health of gas turbine engines in aircraft. This AIR considers monitoring of gas path performance and mechanical parameters, and systems such as low cycle fatigue counters and engine history recorders. It also considers typical measurement system accuracies and their impact. This AIR is intended as a technical guide. It is not intended to be used as a legal document or standard. AIR 1873 supplements ARP 1587, Aircraft Gas Turbine Engine Monitoring System Guide.