TM9-4310-396-13
d. Maintenance Levels (Column 4). 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
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 task identified for the maintenance functions authorized in the maintenance allocation chart. The symbol
designations for the various maintenance categories are as follows:
C
..........
Crew or Operator
O
..........
Unit Maintenance
F
..........
Direct Support Maintenance
H
..........
General Support Maintenance
D
..........
Depot Maintenance
e. Tools and Equipment Reference Code (Column 5). Column 5 specifies, by code, those common tool sets
(not individual tools ),common TMDE, and special tools, special TMDE, and special support equipment required to
perform the designated function.
f.
Remarks Code (Column 6). When applicable this column contains a letter code, in alphabetical order, which is
keyed to the remarks contained in Section IV.
B-4. Explanation of Columns in Tools and Test Equipment Requirements, Section III.
a. Column 1, Tools and Test Equipment Reference Code . The tool and test equipment reference code
correlates with a code used in the MAC, Section II, Column 5.
b. Column 2, Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment.
c. Column 3, Nomenclature. Name or identification of the tool or test equipment.
d. Column 4, National Stock Number . The National stock number of the tool or test equipment.
e. Column 5, Tool Number . The manufacturer's part number.
B-5. Explanation of Columns in Remarks, Section IV.
a. Column 1, Remarks Code. The code recorded in Column 6, Section II.
b. Column 2, Remark. This column lists information pertinent to the maintenance function being performed as
indicated in the MAC, Section II.
B-3
