MAINTENANCE ALLOCATION CHART
SECTION I. INTRODUCTION
a. The maintenance allocation chart identifies the maintenance operations that must be performed. It
assigns each of those operations to the lowest level of maintenance authorized to perform the complete task, or
any part of the task, in terms of availability of time, tools, test and support equipment, skills and employment of
b. The Maintenance Allocation Chart (MAC) in Section II designates overall responsibility for the
performance of maintenance functions for the Distribution Box J-3986/ALQ-151(V).
c. Section III lists the special tools and test equipment required for each maintenance function as
referenced from Section II.
d. Section IV contains supplemental instructions on explanatory notes for a particular maintenance
B-2. Maintenance Functions.
a. Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/or
electrical characteristics with established standards through examination.
b. Test. To verify serviceability and detect incipient failure by measuring the mechanical or electrical
characteristics of an item And comparing those characteristics with prescribed standards.
c. Service. Operations required periodically to keep an item in proper operating condition; i.e., to clean
(decontaminate), preserve, drain, paint or replenish fuel, lubricants, hydraulic fluids, or compressed air
d. Adjust. To maintain, within prescribed limits, by bringing into proper or exact position, or by setting
the operating characteristics to specified parameters.
To adjust specified variable elements of an item to bring about optimum or desired
f. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test,
measuring and diagnostic equipments used in precision measurement. Consists of comparisons of two
instruments, one of which is a certified standard of known accuracy; to detect and adjust any discrepancy in the
accuracy of the instrument being compared.