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TM 1-6625-736-13&P
APPENDIX B
MAINTENANCE ALLOCATION CHART
SECTION I-INTRODUCTION
B-1. GENERAL
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.
B-2. MAINTENANCE FUNCTIONS
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.
Replace-To remove an unserviceable item and install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and is shown as the 3rd position code of the SMR code.
c.
Repair-The application of maintenance services, including fault location/troubleshooting, removal/installation,
and disassembly/assembly procedures, and maintenance actions to identify troubles and restore serviceability to
an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component
or assembly), end item, or system.
d.
Calibrate-To determine and cause corrections to be made or to be adjusted on instruments or test, measuring,
and diagnostic equipment's 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.
e.
Test-To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics of
an item and comparing those characteristics with prescribed standards.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II
a.
Column 1, Group Number-Column 1 lists functional group code numbers, the purposes of which is to identify
maintenance significant components, assemblies, subassemblies, and modules with the next higher assembly.
End item group number shall be "00".
b.
Column 2, Component/Assembly-Column 2 contains the names of components, assemblies, subassemblies, and
modules for which maintenance is authorized.
B-1
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