TM 5-4310-385-13
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.
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 Category. Column 4 specifies, by the 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 at the indicated category of maintenance. If the number of
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 tasks identified for the maintenance functions authorized in the maintenance allocation chart. The symbol
designations for the various maintenance categories are as follows:
C .............................................................................................................................................. Operator or Crew (Unit
O ............................................................................................................................. Organizational Maintenance (Unit)
F .................................................................................................................. Direct Support Maintenance (Intermediate)
H ...............................................................................................................General Support Maintenance (Intermediate)
D ................................................................................................................................................... Depot Maintenance
e.
Column 5, Tools 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 contains remarks or added information pertaining to maintenance functions.
B-4. EXPLANATION OF COLUMNS in TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III.
a.
Column 1, Reference Code. The tool and test equipment reference code correlates with a code used in the MAC,
Section II, Column 5.
b.
Column 2 Maintenance Category. The lowest category of maintenance authorized to use the tool or test
equipment.
c.
Column 3, Nomenclature. Name or identification of the tool or test equipment.
d.
Column 4, National Stock Number. The National stock number of the tool or test equipment.
e.
Column 5, Tool Number. The manufacturer's part number, if available.
B-5. EXPLANATION OF COLUMNS in REMARKS, SECTION IV.
a.
Column 1, Reference Code. The code recorded in column 6 of the MAC (Section II), as applicable.
b.
Column 2 Remarks. This column lists information pertinent to the maintenance function being performed as
indicated in the MAC (Section II).
B-2
