TM 10-4520-262-12&P 0044 00
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, refer to the previous section entitled Maintenance
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 below:
Operator or crew
Direct 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 Test, Measurement, Diagnostic Equipment (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
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.
Explanation of Columns in Remarks
Column (1) - Remarks Code. The code recorded in Column (6) of the MAC.
Column (2) - Remarks. This column lists information pertinent to the maintenance function being
performed as indicated in the MAC.