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TM 55-4920-436-13&P
d. Column 4, Maintenance Category.  Column 4 specifies, by the listing of a work time figure (hours) 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. The
work time figure represents the average time required to restore an item (assembly, subassembly, component, or end
item) to a serviceable condition under typical field operating conditions.
e. 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.
f. Column 6, Remarks. This column, when applicable, contains a letter code, in alphabetic 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, 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 Category. The lowest category of maintenance authorized to use the tool.
c. Column 3, Nomenclature. Name or identification of the tool.
d. Column 4, National Stock Number. The National Stock Number of the tool.
B-5. Explanation of Columns in Remarks, Section IV.
a. Column 1, Reference Code. The code recorded in Column 6, Section II.
b. Column 2, Remarks. This column lists information pertinent to the maintenance function being performed as
indicated in the MAC, Section II.


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