MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
a. This section provides a general explanation of all maintenance and repair functions authorized
at various maintenance levels.
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 Ill lists the tools and test equipment required for each maintenance function as
referenced from Section Il.
d. Section IV contains supplemental instructions, explanatory notes and/or illustrations required
for a particular maintenance functions.
C-2. Explanation of Columns in Section Il.
a. Group Number. Column 1. The assembly group is a numerical group assigned to each assem-
bly in a top down breakdown sequence. The applicable assembly groups are listed on the MAC in dis-
assembly 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 group.
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:
C - Operator or crew
O - Unit maintenance
F - Intermediate direct support maintenance
H - Intermediate general support maintenance
D - Depot 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
C - Service. To clean, to preserve, to charge, and to add fuel, lubricants, cooling agents, and
air. If it is desired that elements, such as painting and lubricating, be defined separately, they may be