TM 9-2350-256-20
APPENDIX B
MAINTENANCE ALLOCATION CHART (MAC)
APPENDIX OVERVIEW
This appendix provides a general explanation of all maintenance and repair functions, designates overall authority and
responsibility for the performance of maintenance functions, and lists the tools and test equipment required for each
maintenance function.
This appendix consists of the following sections:
Page
Section I:
Introduction ....................................................................B-1
Section II:
MAC ...............................................................................B-4
Section III:
Tools and Test Equipment .............................................B-26
SECTION I: INTRODUCTION
Para.
Task
Page
B-1
The Army Maintenance System MAC ...............................................................................B-1
B-2
Maintenance Functions ....................................................................................................B-1
B-3
Explanation of Columns in the MAC, Section II ................................................................B-2
B-4
Explanation of Columns in Tools and Test Equipment, Section III.....................................B-3
B-1 THE ARMY MAINTENANCE SYSTEM MAC
a. This introduction provides a general explanation of all maintenance and repair functions authorized at various
maintenance levels under the standard Army Maintenance System concept.
b. The 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 required for each maintenance function as referenced from Section II.
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.
c. SERVICE Operations required periodically to keep an item in proper operating condition, e.g., to clean (includes
decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or gases.
B-1
