SAE AIR 4176A:2015

The purpose of this SAE Aerospace Information Report (AIR) is to
provide information that would be useful to potential
users/operators and decision makers for evaluating and quantifying
the benefits of an Engine Monitoring Systems (EMS) versus its cost
of implementation.

This document presents excerpts from reports developed to
analyze "actual aircraft cost/benefits results". These
are presented as follows:

a. First, to outline the benefits and cost elements pertaining
to EMS that may be used in performing a cost versus benefits
analysis.
b. Second, to present considerations for use in conducting the
analysis.
c. Third, to provide examples of analyses and results as they
relate to the user/operator and decision-maker community.

The document encompasses helicopters and fixed wing aircraft and
distinguishes between civilian and military considerations.

This document is not intended to be used as a technical guide,
nor is it intended to provide methodologies, be a legal document,
or be a standard. The findings are informational and are presented
in the words of the report authors.