MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
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.
Section Ill lists the tools and test equipment (both special tools and common tool sets) required for
each maintenance function as referenced from section Il.
d. Section IV contains supplemental instructions and explanatory notes for a particular maintenance
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 (e.g., by sight, sound, or touch).
b. test. To verify service ability by measuring the mechanical, pneumatic, hydraulic, or electrical charac-
teristics of an item and comparing those characteristics with prescribed standards.
Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean
(includes decontaminate, when required), preserve, drain, paint, or replenish fuel, lubricants, or gases.
d. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper or exact position or
by setting the operating characteristics to specified parameters.
Aline. To adjust specified variable elements of an item to bring about optimum or desired perform-
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 instru-
ments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the
accuracy of the instrument being compared.
Removal/lnstall To remove and install the same item when required to perform service or other
maintenance functions. Install maybe the act of emplacing, seating, or fixing into position a spare, repair part,
or module (component or assembly) in a manner to allow the proper functioning of a piece of equipment or