MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
a. This section provides a general explanation of all maintenance and repair functions authorized at various
b. Section II designates overall responsibility for the performance of maintenance functions on the identified
end item or component. The implementation of the maintenance functions upon the end item or component will
be consistent with the assigned maintenance functions.
c. Section III lists the tools and test equipment required for each maintenance function as referenced from
d. Section IV contains supplemental instructions, explanatory notes and/or illustrations required for a particular
C-2. Explanation of Columns in Section II.
a. Group Number. Column 1. The assembly group is a numerical group assigned to each assembly in a top
down breakdown sequence. The applicable assembly groups are listed on the MAC in disassembly sequence
beginning with the first assembly removed in a top down disassembly sequence.
b. Assembly Group. Column 2. This column contains a brief description of the components of each assembly
c. Maintenance Functions. Column 3. This column lists the various maintenance functions (A through K) and
indicates the lowest maintenance category authorized to perform these functions. The symbol designations for
the various maintenance categories are as follows:
Operator or crew
Direct support maintenance
General support maintenance
The maintenance functions are defined as follows:
A Inspect. To determine serviceability of an item by comparing its physical, mechanical, and electrical
characteristics with established standards.
B Test. To verify serviceability and to detect electrical or mechanical failure by use of test equipment.