MAINTENANCE ALLOCATION CHART
a. This section provides a general explanation of all maintenance and repair functions authorized at
various maintenance categories.
b. The Maintenance Allocation Chart (MAC) in section II designates overall responsibility for the
performance of maintenance functions on the identified end item or component. The implementation of
the maintenance functions upon the end item or component will be consistent with the assigned
c. Section Ill lists the special tools and test equipment required for each maintenance function as
referenced from section Il.
d. Section IV contains supplemental instructions and explanatory notes for a particular maintenance
B-2. MAINTENANCE FUNCTIONS
Maintenance functions will be limited to and defined as follows:
Inspect. To determine the serviceability of an item by comparing its physical, mechanical,
and/or electrical characteristics with established standards through examination.
To verify serviceability 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 (includes decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel,
lubricants, chemical fluids, or gases.
To maintain, within prescribed limits, by bringing into proper or exact position, or by
setting the operating characteristics to specified parameters.
Align. To adjust specified variable elements of an item to bring about optimum or desired perform-
f. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or
test, measuring, and diagnostic equipment 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.