TM 5-4310-393-14
3.
EXPLANA TION 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 A-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 or complexity of the tasks within the listed maintenance function varies 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
O .........Unit Maintenance
F..........Direct Support Maintenance (DS)
H .........General Support Maintenance (GS)
D .........Depot Maintenance
e.
Column 5 - Tools and Equipment. Column 5 specifies, by number code, those common tool sets (not
individual tools); special tools; Test, Measurement, and Diagnostic Equipment (TMDE); and support equipment required to
perform the designated function, which shall be keyed to the tools listed in Section III.
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.
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 number 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 (NSN) of the tool or test equipment.
e.
Column 5 - Tool Number. The manufacturer's part number.
5.
EXPLANATION OF COLUMNS IN REMARKS, SECTION IV.
a.
Column 1 - Reference Code. The letter code recorded in Column 6, Section II.
b.
Column 2 - Remarks. This column lists information pertinent to the maintenance function being performed
as indicated in the MAC, Section II.
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