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
authority and responsibility for the performance of maintenance functions on the
identified end item or component. The application of the maintenance functions to
the end item or component will be consistent with the capacities and capabilities of
the designated maintenance categories.
c. Section III lists the tools and test equipment (both special tools and common
tool sets) required for each maintenance function as referenced from section II.
d. Section IV contains supplemental instructions and explanatory notes for a
particular maintenance function.
Maintenance functions will be limited to and defined as follows:
a. Inspect. To determine the serviceability of an item by comparing its
physical, mechanical, and\or electrical characteristics with established standards
through examination (e.g., by sight, sound, or feel).
b. Test. To verify serviceability by measuring the mechanical, pneumatic,
hydraulic, 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
d. Adjust. TO maintain or regulate, within prescribed limits, by bringing into
proper or exact position, or by setting the operating characteristics to specified
e. Align. To adjust specified variable elements of an item to bring about
optimum or desired performance.
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.