TM 55-4920-432-13&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.
B-1
