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Page Title:
EXPLANATION OF COLUMNS IN THE MAC, SECTION Il. |
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 TM 9-2350-238-20-1
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION Il.
a. Column 1, Group Number. Column 1 lists functional group code numbers, the purpose of
which is to identify maintenance significant components, assemblies, subassemblies, and modules
with the next higher assembly. End item group number shall be "00."
b. Column 2, Component/Assembly. Column 2 contains the names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
c. Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item
listed in column 2. (For detailed explanation of these functions, see paragraph B-2.)
d. Column 4, Maintenance Level Column 4 specifies, by the listing of a work-time figure in the
appropriate subcolumn(s), the level of maintenance authorized to perform the function listed in
column 3. This figure represents the active time required to perform that maintenance function at
the indicated level of maintenance. If the number or complexity of the tasks within the listed
maintenance function vary at different maintenance levels, appropriate work-time figures are to be
shown for each level. The work-time figure represents the average time required to restore an item
(assembly, subassembly, component, module, end item, or system) to a serviceable condition under
typical field operating conditions. This time includes preparation time (including any necessary
disassembly/assembly time), troubleshooting/fault location time, and quality assurance/quality control
time in addition to the time required to perform the specific tasks identified for the maintenance
functions authorized in the maintenance allocation chart. The symbol designations for the various
maintenance levels are as follows:
C
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Operator or crew maintenance
O
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Unit maintenance
F
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Direct support maintenance
H
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General support maintenance
Specialized Repair Activity (SRA)6
L
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D
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Depot maintenance
e. Column 5, Took and Equipment. Column 5 specifies, by code, those common tool sets
(not individual tools) and special tools, TMDE, and support equipment required to perform the
designated function.
f.
Column 6, Remarks. This column shall, when applicable, contain a letter code, in
alphabetic order, which shall be keyed to the remarks contained in section IV.
6
This maintenance level is not included in section II, column (4) of the MAC. To identify functions to
this level of maintenance, enter a work time figure in the "H" column of section II, column (4), and
use an associated reference code in the Remarks column (6). Key the code to section IV, Remarks,
and explain the SRA complete repair application there. The explanatory remark(s) shall reference
the specific Repair Parts and Special Tools List (RPSTL) TM which contains additional SRA criteria
and the authorized spare/repair parts.
B-3
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