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The effectiveness of Engine Life Usage Monitoring and Parts Management systems is largely determined by the aircraft-specific requirements. This document addresses the following areas: a Safety b Life-limiting criteria c Life usage algorithm development d Data acquisition and management e Parts life tracking f Design feedback g Cost effectiveness It primarily examines the requirements and techniques currently in use, and considers the potential impact of new technology to the following areas: a Parts classification and control requirements b Failure causes of life-limited parts c Engine life prediction and usage measurement techniques d Method validation e Parts life usage data management f Lessons learned g Life usage tracking benefits

This SAE Aerospace Recommended Practice (ARP) is a system guide for Engine Monitoring System (EMS) definition and implementation. This keystone document addresses EMS benefits, capabilities, and requirements. It includes EMS in-flight and ground applications consisting of people, equipment, and software. It recommends EMS requirements that are a balance of selected benefits and available capabilities. This ARP purposely addresses a wide range of EMS architecture. The intent is to provide an extensive list of possible EMS design options. NOTE: a Section 3 describes an EMS. b Sections 4 and 5 outline benefits and capabilities that should be considered for study purposes to define EMS baselines for how much engine monitoring is required. c Section 6 provides implementation requirements that should be considered for an EMS after study baseline levels of EMS complexity are selected.

This Aerospace Information Report (AIR) is a general overview of typical airborne vibration monitoring (AVM) systems with an emphasis on system hardware design considerations. It describes AVM systems currently in use. The purpose of this AIR is to provide information and guidance for the selection, installation, and use of AVM systems and their elements. This AIR is not intended as a legal document but only as a technical guide.

This ARP is a system guide for Engine Monitoring System (EMS) definition and implementation. This keystone document addresses EMS benefits, capabilities and requirements. It includes EMS in-flight and ground applications of people and equipment, and recommends EMS requirements that are a balance of selected benefits and available capabilities. This ARP purposely addresses a comprehensive EMS. The intent is to provide an extensive list of possible EMS design options. NOTE: - Section 3 describes an EMS. - Sections 4 and 5 outline benefits and capabilities that should be considered for study purposes to define EMS baselines for how much or how little engine monitoring might be required. - Section 6 provides implementation requirements that should be considered for an EMS after study baseline levels of EMS complexity are selected.

The purpose of this SAE Aerospace Information Report (AIR) is to provide information and guidance for the selection and use of oil system monitoring devices and methods. This AIR is intended to be used as a technical guide. It is not intended to be used as a legal document or standard. The scope of this document is limited to those inspection and analysis methods and devices that can be considered appropriate for routine maintenance. In agreement with industry usage, wear particle size ranges are given in micrometers (1 μm = 10-3 mm = 10-6 m).

The effectiveness of Engine Life Usage Monitoring and Parts Management systems is largely determined by the aircraft-specific requirements. This AIR addresses the following areas: a Safety. b Life-limiting criteria. c Life usage algorithm development. d Data acquisition and management. e Parts life tracking. f Design feedback. g Cost effectiveness. This AIR primarily examines the requirements and techniques currently in use, including: a Parts classification and control requirements. b Failure causes of life-limited parts. c Engine life prediction and usage measurement techniques. d Method validation. e Parts life usage data management. f Lessons learned. g Life usage tracking benefits.

The purpose of this Aerospace Information Report (AIR) is to provide information and guidance for the selection and use of oil system monitoring devices and methods. This AIR is intended to be used as a technical guide. It is not intended to be used as a legal document or standard. The scope of this document is limited to those inspection and analysis methods and devices which can be considered appropriate for routine maintenance. In agreement with industry usage, wear particle size ranges are given in μm (1 μm = 10-3 millimeter = 10-6 meter). Other dimensions are given in millimeters, with inches in parenthesis.