ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
MAINTENANCE ALLOCATION CHART (MAC)
Section I. INTRODUCTION
B-1. THE ARMY MAINTENANCE SYSTEM MAC.
a. This introduction (section 1) 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 Ill lists the tools and test equipment (both special tools and common tool sets)
required for each maintenance function as referenced from section Il.
d. Section IV contains supplemental instructions and explanatory notes for a particular mainte-
nance function.
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.
