A Model of the effect of sparing and repair turnaround time of the inertial navigation system on aircraft readiness for the F/A-18.

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Author
Hase, Christopher A.
Date
1988-06Advisor
McMasters, Alan W.
Second Reader
Mitchell, Mark L.
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Show full item recordAbstract
Modern aircraft design allows for short turnaround times by removing the failed
component and installing an operational one. The defective component is then either
repaired in the squadron or turned in to supply which then sends the defective component
to an Intermediate Maintenance Activity (IMA) for repair. The aircraft is unable
to be turned around for another flight if supply is out of stock of that component without
resorting to additional maintenance measures. This is when aircraft readiness experiences
a measurable deterioration due to supply not having the part on hand. Aircraft
readiness, as defined in this thesis, is the ability of a specific F/A-18 to perform all of its
missions. A simulation model which measures the time that an aircraft is not ready
(downtime) was developed to relate the turnaround time at the IMA and the quantity
of spare parts maintained by the supply system to this lack of readiness. The model
developed showed that a decrease in the turnaround time of a part at the IMA, the increase
in quantity of spare parts maintained by the supply system cause a nonlinear reduction
in aircraft readiness. This model could be used to aid decision makers in
determining the effect changes in spare parts quantities and IMA turnaround times
could have on aircraft readiness.
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