Explanation of Columns in the MAC, Section II

TM 10-3930-644-14&P

applied to Army equipment.

The rebuild operation includes the act of returning to zero those age measurements

(hours/miles, etc.) considered in classifying Army equipment/components.

C-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 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 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