ARMY TM 3-6665-329-13&P
AIR FORCE TO 11H2-18-1
MAINTENANCE ALLOCATION CHART
Section I. Introduction
This section provides a general explanation of all maintenance and repair functions authorized at
various maintenance levels under the standard Army Maintenance System concept.
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, which includes two subcolumns, C (operator/crew) and O (unit maintenance).
INTERMEDIATE, which includes two subcolumns F (Intermediate Direct Support) and H (Intermediate
G e n e r a l Support).
DEPOT, which includes a D (Depot) subcolumn.
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.
Section IV contains supplemental instructions and explanatory notes for a particular maintenance
Maintenance functions will be limited to and defined as follows:
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).
Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
Service. Operations required periodically to keep an item in proper operating condition, i.e.,
to clean (includes decontaminate, when required), to preserve, to drain, to paint, or to
replenish fuel, lubricants, chemical fluids, or gases.
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.