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TM 10-4130-239-14
B-3 .
EXPLANATION OF COLUMNS IN THE MAC, SECTION II
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 Cateqory.
Column 4 specifies, by listing
of a work time figure in the appropriate subcolumn(s), the category
of maintenance authorized to perform the function listed in column 3.
This figure represents the active time required to perform that
maintenance function to the indicated category of maintenance. If
the number or complexity of the tasks within the listed maintenance
function vary at different maintenance categories, appropriate work
time figures will be shown for each category.
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 task identified for the maintenance
functions authorized in the maintenance allocation chart.
The symbol
designations for various maintenance categories are as follows:
c . . . . . . . . . . . . . . .Operator or crew
o . . . . . . . . . . . . . . ..Unit maintenance
F . . . . . . . . . . . . . ..Direct support maintenance
H . . . . . . . . . . . . ...General support maintenance
L . . . . . . . . . . . ...Specialized repair activity (SRA)5
D . . . . . . . . . . . . . . ..Depot maintenance
5This maintenance category is not included in Section II, column
(4) of the maintenance allocation chart.
To identify functions to
this category 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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