Column 2. Component/Assembly. Column 2 contains the names of components, assemblies, subassemblies, and
modules for which maintenance is authorized.
Column 3. Maintenance Function. Column 3 lists the functions performed on the item listed in Column 2. (For a detailed
explanation, refer to the previous section entitled Maintenance Functions)
Column 4. Maintenance Level. Column 4 specifies, by the listing of a work time figure (expressed as man-hours shown
as whole hours or decimals) 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 the complexity of the tasks within the listed maintenance function
vary at different maintenance levels, appropriate work time figures will 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 item preparation
(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 system designations for the various maintenance levels are shown
Operator or crew
. Direct Support Maintenance
. Depot Maintenance
. Unit Maintenance
. General Support Maintenance
Column 5. Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual tools) common
TMDE, and special tools, special TMDE, and support equipment required to perform the designated function.
Column 6. Remarks. This column, when applicable, contains a letter code, in alphabetic order, which is keyed to the
remarks contained in Table 3.
Explanation of Columns in the Tools and Test Equipment Requirements.
Column 1. Tool or Test Equipment Reference Code. The tool or test equipment reference code correlates with a code
used in column (5) of the MAC.
Column 2. Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment.
Column 3. Nomenclature. Name or identification of tool or test equipment.
Column 4. National Stock Number (NSN). The NSN of the tool or test equipment.
Column 5. Tool Number. The manufacturers part number, model number, or type number.