描述了在特定接收器位置（乘客和货舱门以及维修位置）测量噪声以及在飞机周围进行一般噪声调查的试验程序。还描述了在噪声源位置测量噪声级和方向性的程序，以便于理解和解释数据。确定了与仪器有关的要求；声学和大气环境；数据采集、减少和呈现，以及报告结果所需的其他信息。本文件未规定根据基本发动机特性或设计参数预测APU或部件噪声，也未规定测量多架飞机同时运行的噪声。未尝试建议可接受的噪音水平或判断可接受性的适当主观标准。国际民航组织附件16第一卷附件C提供了建议的最大噪声级指南。 本航空航天推荐规程（ARP）描述了测量、分析和报告维修中飞机机载APU和相关设备运行产生的噪声的标准条件和程序。

Test procedures are described for measuring noise at specific receiver locations (passenger and cargo doors, and servicing positions) and for conducting general noise surveys around aircraft. Procedures are also described for measuring noise level and directivity at noise source locations to facilitate the understanding and interpretation of the data.Requirements are identified with respect to instrumentation; acoustic and atmospheric environment; data acquisition, reduction and presentation, and such other information as is needed for reporting the results.This document makes no provision for predicting APU or component noise from basic engine characteristics or design parameters, nor for measuring noise of more than one aircraft operating at the same time.No attempt is made to suggest acceptable levels of noise or suitable subjective criteria for judging acceptability. ICAO Annex 16 Volume I Attachment C provides guidance on recommended maximum noise levels.This Aerospace Recommended Practice (ARP) describes standard conditions and procedures for measuring, analyzing and reporting noise resulting from operation of on-board APUs and associated equipment of aircraft undergoing servicing.