TM 10-4520-259-13&P
APPENDIX B
MAINTENANCE ALLOCATION CHART (MAC)
SECTION I. INTRODUCTION
B-1. The Army Maintenance System MAC
a.
This introduction (Section I) provides a general explanation of all maintenance and repair functions
authorized at various maintenance levels under the Standard Army Maintenance System concept.
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 levels, which are shown on the MAC in column (4) as:
Unit - includes two subcolumns, C (operator/crew) and O (unit) maintenance.
Direct Support - includes an F subcolumn.
General Support - includes an H subcolumn.
Depot - includes a D subcolumn.
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. Maintenance functions are 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.
B-1
