b. Column 2, Component/Assembly. Column 2
contains the names of components, assemblies, sub-
assemblies and modules for which maintenance is
c. Column 3, Maintenance Func-
tions. Column 3 lists the functions to be performed
on the item listed in column 2. (For detailed expla-
nation of these functions, see para B-2.)
d. Column 4, Maintenance Level. Column 4
specified, by the listing of a work time figure in the
appropriate subcolumn(s), the lowest level of main-
tenance authorized to perform the function listed in
column 3. This figure represents the active time re-
quired to perform the maintenance function at the
indicated level of maintenance. If the number or
complexity of the tasks within the listed mainte-
nance function vary at different maintenance lev-
els, appropriate work time figures will be shown for
each level. The number of manhours specified by
the work time figure represents the average time
required to restore an item (assembly, subassembly,
component, module, end item, or system) to a ser-
viceable condition under typical field operating con-
ditions. This time includes preparation time, trou-
bleshooting time, and quality assurance/quality
control time in addition to the time required to per-
form the specific tasks identified for the mainte-
nance functions authorized in the maintenance al-
location chart. The symbol designations for the
various maintenance levels are as follows:
Operator or crew
Direct support maintenance
General support maintenance
e. Column 5, Tools and Equipment. Column 5
specifies, by code, those common tool sets (not indi-
vidual tools) and special tools, test, and support
equipment required to perform the designated func-
t i o n.
f. Column 6, Remarks. This column shall con-
tain a letter code in alphahabetic order which shall be
keyed to the remarks contained in Section IV.
B-4. Column Entries Used in Tool and Test
a. Column 1, Tool or Test Equipment Refer-
ence Code. The tool and test equipment reference
code correlates with a maintenance function on the
identified end item or component.
b. Column 2, Maintenance Level. The lowest
level of maintenance authorized to use the tool or
c. Column 3, Nomenclature. Name or identi-
fication of the tool or test equipment.
d. Column 4, National/NATO Stock Number.
The National or NATO Stock Number of the tool or
e. Column 5, Tool Number. The manu-
facturers part number.
B-5. Explanation of Columns in Section IV.
a. Reference Code. The code scheme recorded in
column 6, Section II.
b. Remarks. This column lists information per-
tinent to the maintenance function being per-
formed as indicated on the MAC, Section II.