EXPLANATION OF COLUMNS IN THE MAC. (cont)

TM 9-6920-746-12&P

c. Column 3, Maintenance Function. 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

sub-column(s), the category 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 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 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. The symbol designations for the various maintenance categories are as follows:

l .................................................................................................. Operator or Crew

0 ................................................................................ Organizational Maintenance

a. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual tools)

and special tools, TMDE, and support equipment required to perform the designated function.

B-3