Column 4, Maintenance Level. Column 4 specifies, by the listing of a work time figure 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 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 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 levels are as
Operator or Crew
General Support Maintenance
Direct Support Maintenance
* Asterisk indicates level of maintenance authorized to complete this function. No time is established.
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.
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 Level. The lowest category of maintenance authorized to use the tool or test
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 manufacturers part number.
B-5. EXPLANATION OF COLUMNS IN REMARKS, SECTION IV.
Column 1, Reference Code. An alphabetic code listed in the sixth column of the MAC and first column
of the Remarks section to identify remarks made to the MAC.
Column 2, Remarks. The complete text of the remarks made to the MAC.