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The original equipment manufacturers have many lines of communication
with airline maintenance & engineering departments. These have
traditionally been managed with paper systems and require large number
of engineers. IT systems now exist to manage these processes.
Integrating maintenance
& engineering IT systems
with the OEMs
management, Aircraft Commerce,
June/July 2004, page 35).
All major M&E IT systems have the
aircraft configuration, part and
component data, and maintenance
information loaded as the basis for
reliability analysis. MRO Software’s
Raptor system stores the configuration of
an operator’s fleet, listing all possible
parts that can be used in each position on
the aircraft and the maintenance plan for
each part number. “Raptor’s system keeps
a maintenance plan of what maintenance
is due and what maintenance has been
performed for each part, as well as a
history of all the individual part serial
numbers that have been used in each
position. With aircraft utilisation data
input, it can thus also record when each
part was removed or installed and if it is
an on-condition or scheduled
maintenance item,” says Frank Henry at
MRO Software. “Raptor has a system of
direct counts from flight operations,
which is a record of the accumulated
flight hours (FH), flight cycles (FC) and
engine starts the aircraft and each
component has had. By tracking each
part with respect to removals and
installations, it is possible to compile a
record of indirect counts. That is, a
record of utilisation counts for each of
the aircraft it has been installed on. In
addition, Raptor has the facility to
change the as-of date for an aircraft’s
configuration so that it and all data
relating to maintenance condition and
maintenance status can be shown at that
date, or at any other time. The system
can also go forward in time to see what
maintenance events are due. It can then
indicate what parts will be removed for
maintenance and how this will alter the
aircraft’s configuration.”
Reliability data with respect to the
removal of parts are generated from the
maintenance history of each part. “This
removal, installation and removal interval
information initially comes from
maintenance operations control and pilot
reports,” explains Chris Reed, managing
director of TRAX Software. “Some
airlines put these data in manually, but
the use of tablet computers on the
flightdeck and at maintenance operations
control speeds up the process.”
Operators compile reliability data,
and M&E IT systems obviously make
this easier for operators to do.
“Reliability of parts can be tracked very
simply and quickly,” explains Hughes.
“Our AuRA system has the ability to call
up a part number. It has a remove/install
screen which lists a part by its serial
number and other information such as
illustrated parts catalogue (IPC) number
and reason for removal. The system can
analyse removal data with respect to part
number, dash number, tail number,
position in the aircraft, symptoms for
removal, part and dash number upgrades,
which mechanics removed, tested and
repaired the part and what their findings
were. AuRA’s data collection means each
individual part can be analysed with
respect to the dates it was removed, or by
their removal intervals. Overall, the total
number of removals for each part and
dash number over a period can be
analysed. Sorting by serial number and
tail number can allow the parts causing
poor reliability to be analysed. These data
are then sent to the OEMs for analysis.
Automating the collection, collation and
AIRCRAFT COMMERCE ISSUE NO. 36 • AUGUST/SEPTEMBER 2004
26 I MAINTENANCE & ENGINEERING
Spirent’s Systems AuRA aircraft configuration
management system can not only show the
structure of the aircraft by a structure tree with
ATA Chapters, but also call up the illustrated
parts catalogue and Service Bulletin information
that relate to a specific part number.
analysis of these data from several
viewpoints provides good quality data
which the OEMs can use for analysis. If
reliability of a particular part or dash
number is poor then the OEMs issue
advisories, service bulletins (SBs) or
airworthiness directives (ADs) to improve
reliability.”
Engineering data
There are several forms of engineering
　
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