AIRCRAFT ENGINE MANAGEMENT SYSTEM
Aircraft engines must be accounted for and
reported on in much the same fashion as aircraft. If the
same engine were to remain installed in the same
aircraft throughout the aircrafts service life, there
would be little need to account for engines separately
from aircraft. However, engines are constantly being
removed and replaced due to maintenance actions.
Engines rarely remain installed in the same airframe
throughout the life of the aircraft.
INTRODUCTION TO THE AIRCRAFT
ENGINE MANAGEMENT SYSTEM
LEARNING OBJECTIVES: Define the
purpose of the Aircraft Engine Management
System (AEMS). Identify the document that
contains detailed instructions that govern the
The Aircraft Engine Management System (AEMS)
is an automated data engine management system that
provides on-line inventory management and reporting
of aircraft engines, propulsion systems, and modules.
Engines are the most expensive item of equipment
in the Naval Air Logistics System in terms of unit cost
and total dollar expenditure. The sizeable investment in
aircraft engines requires close management control to
shorten out-of-service time and reduce the quantity of
spare engines needed.
Various Navy-wide aircraft engine management
reports are developed by the Naval Air Systems
Command (NAVAIRSYSCOM) on automatic data
processing equipment from a master aircraft engine
record file. This master file contains the status, custody,
and performance history of each serially numbered
aircraft engine in the active Navy engine inventory.
This data is updated by Engine Transaction Reports and
End-of-Quarter reports (ETRs and EOQs) from
reporting custodians of naval aircraft engines. The data
is transmitted by the custodians of engines to upper
echelon commands. Upper echelon commands prepare
failure rate reports and develop overhaul schedules.
Aircraft Engine Management System,
NAVAIRINST 13700.15, and Aircraft Controlling
Custodian (ACC) instructions prescribe reporting
procedures for aircraft engine management and should
be consulted when engine management reports are
prepared. This chapter was written to familiarize you,
the AZ, with engine management reporting procedures
and applications at the operating squadron level.
NOTE: ETRs, EOQ reports, and Engine Record
Cards (E cards) can be maintained and generated
through the Navy Aviation Logistic Command
Management Information System (NALCOMIS). This
system allows users to generate, update or delete ETRs,
EOQs, and engine record cards. Refer to NALCOMMIS
OMA End Users Manual (EM) for detailed procedures
in generating and maintaining these reports and
What system provides data on the inventory
management and reporting of engines,
propulsion systems, and modules?
What instruction prescribes reporting procedures
for the AEMS?
ENGINE MANAGEMENT CODES
LEARNING OBJECTIVE: Identify codes
used in the AEMS.
The AEMS encompasses all facets of aircraft
engine accounting. Information generated by AEMS
must be put into a usable format before it is of any use
to maintenance managers. AEMS does this through
engine management codes that simplify and
standardize engine management reporting procedures.
A standard abbreviated reporting system describes
change in custody and status.
Engine management codes ease the burden of
reporting custody and status changes. Information can
be reported by using terminology (codes) that is
understood Navy-wide. The following is a listing of
some of the more commonly used codes in aircraft