MAINTENANCE ALLOCATION CHART
SECTION I. INTRODUCTION
a. This section provides a general explanation of all maintenance and repair functions authorized at various
b. Section II designates overall responsibility for the performance of maintenance functions on the identified end
item or component and the work measurement time required to perform the functions by the designated maintenance
level. The implementation of the maintenance functions upon the end item or component will be consistent with the
assigned maintenance functions.
c. Section III lists the tools and test equipment required for each maintenance function as referenced from Section II.
EXPLANATION OF COLUMNS IN SECTION II.
a. Column 1. Group Number. Column 1 lists group numbers to identify related components, assemblies,
subassemblies, and modules with their next higher assembly. The applicable groups are listed in the MAC in disassembly
sequence beginning with the first group removed.
b. Column 2. Component/Assembly. This column contains the noun names of components, assemblies,
subassemblies and modules for which maintenance is authorized.
c. Column 3. Maintenance Functions. This column lists the functions to be performed on the item listed in Column
2. The maintenance functions are defined as follows:
(1) Inspect. To determine serviceability of an item by comparing its physical, mechanical, and/or electrical
characteristics with established standards through examination.
(2) Test. To verify serviceability and detect incipient failure by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribe standards.
(3) Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean
(decontaminated), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air
(4) Adjust. To maintain within prescribed limits, by bringing into proper or exact position, or by setting the
operating characteristics to be specified parameters.