The purpose of this SAE Aeropace report(AIR)is to provide information and for the selection and use of oil system montioring devices and methods.This AIR is instended to be used as a technical guide.It is not instanded to be used as a legal doument or standard.The scope of this doument is limited to those inspection and analysis methods and deviced that can considered appropriate for routine maintenance.In agreement with industry usage, wear paracticle size rangs are given in micrometer