SAE AIR 1872B:2011

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: safety,
life-limiting criteria, life usage algorithm development, data
acquisition and management, parts life tracking, design feedback,
and cost effectiveness.

It primarily examines the requirements and techniques currently
in use, and considers the potential impact of new technolog to the
following areas: parts classification and control requirements,
failure causes of life-limited parts, engine life prediction and
usage measurement techniques, method validation, parts life usage
data management, lessons learned, and life usage tracking
benefits.

SAE ARP1587 provides general guidance on the design
consideration and objectives of monitoring systems for aircraft gas
turbine engines. A major function of these Engine Monitoring
Systems is to monitor the usage of life-limited parts in order to
maximize available life and to enhance aircraft safety.

The purpose of this document is to review the current approaches
to Engine Life Usage Monitoring and Parts Management. The document
also serves to provide a summary of the many varied requirements of
aircraft turbine engine life usage monitoring and parts management
and a description of the means by which these requirements can be
achieved more effectively through the use of engine monitoring
systems.