Column 4 - Maintenance Ievel. 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 numb or complexity of the tasks within the listed maintenance function varies 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 file operating conditions. This time includes
preparation time (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 symbol designations for the
various maintenance categories are as follows:
Operator or Crew
Direct Support Maintenance
Specialized Repair Activity (SRA)5
General Support Maintenance
Column 5 - Tools and Test Equipment. Column 5 specifies, by code, those common tool sets (not
individual tool and special tools, TMDE, and support equipment required to perform the designated function.
Column 6 - Remarks. This column shall, when applicable, contain a letter code, in alphabetic order,
which shall be keyed to the remarks contained in section IV.
B.4 EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III.
Column 1 - Reference Code. The tool and test equipment reference code correlates with a code used
in the MAC section II, column 5.
Column 2 - Maintenance Category. The lowest category of maintenance authorized to use the tool or
Column 3 - Nomenclature. Name or identification of the tool or test equipment.
Column 4 - National Stock Number. The National stock number of the tool or test equipment.
Column 5 - Tool Number. The manufacturer's part number.
B.5 EXPLANATION OF COLUMNS IN REMARKS, SECTION IV.
Column 1 - Reference Code. The code recorded in column 6, section II.
Column 2 - Remarks. This column lists information pertinent to the maintenance function being
performed indicated in the MAC, section II.
5 This maintenance level is not included in Section II, column 4 of the Maintenance Allocation Chart.
Functions to this level of maintenance are identified by a work-time figure in the "H column of Section II,
column 4, and associated reference code is used in the Remarks column 6. This code is keyed to Section IV,
Remarks, and the SRA complete repair application is explained there.