MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
a. This section provides a general explanation of all maintenance and repair functions authorized at
various maintenance levels.
b. The Maintenance Allocation Chart (MAC) in section II designates overall responsibility for the per-
formance 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 maintenance
c. Section III lists the special tools and test equipment required for each maintenance function, as
referenced from section II.
B-2. Maintenance Functions.
Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/or
electrical characteristics with established standards.
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.'
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
Adjust. To maintain, within prescribed limits, 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
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.
lnstall. The act of emplacing, seating, or fixing into position an item, part, or module
(component or assembly) in a manner to allow the proper functioning of an equipment or system.
Replace. The act of substituting a serviceable like type part, subassembly, or module
(component or assembly) for an unserviceable counterpart
Repair. The application of maintenance services or other maintenance actions to restore service-
ability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly,
module (component or assembly), end item, or system.