c. Column 3, Maintenance Functions. Column 3 lists the functions to be performed on the item listed in column 2.
d. Column 4, Maintenance Category. Column 4 specifies, by the listing of a ''work time" figure in the appropriate
subcolumn(s), the lowest level of maintenance authorized to perform the function listed in column 3. This figure
represents the active time required to perform the maintenance function at the indicated level 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 number of manhours specifled by 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,
troubleshooting 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.
e. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individ-
ual tools) and special tools, test, and support equipment required to perform the designated function.
f. Column 6, Remarks. Column six (6) (VI) contains au alphabetic code which leads to the network in section W,
Remarks, which is pertinent to the item opposite the particular code.