C....................... Operator or Crew
B-3. Explanation of Columns in the MAC, Section
O ...................... Organizational Maintenance
F ....................... Direct Support Maintenance
a. Column I, Group Number. Column 1 lists
H....................... General Support Maintenance
functional group code numbers, the purpose of which is
D....................... Depot Maintenance
to identify maintenance significant components,
e. Column 5, Tools and Equipment. Column 5
assemblies, subassemblies, and modules with the next
specifies, by code, those common tool sets (not
higher assembly. End item group number shall be "00. "
individual tools) and special tools, TMDE, and support
b. Column 2, Component/Assembly. Column 2
equipment required to perform the designated function.
contains the names of components, assemblies,
f. Column 6, Remarks. This column shall, when
subassemblies, and modules for which maintenance is
applicable, contain a letter code, in alphabetic order,
which shall be keyed to the remarks contained in Section
c. Column 3, Maintenance Function. Column 3
lists the functions to be performed on the item listed in
B-4. Explanation of Columns in Tool and Test
(For a detailed explanation of these
Equipment Requirements, Section III
functions, see paragraph B-2. )
a. Column 1, Tool or Test Equipment Reference
Column 4, Maintenance Level.
Code. The tool and test equipment reference code
Column 4 specifies, by the listing of a work time figure in
correlates with a code used in the MAC, Section II,
the appropriate subcolumn(s), the level of maintenance
authorized to perform the function listed in Column 3.
b. Column 2, Maintenance Level. The lowest level
This figure represents the active time required to perform
of maintenance authorized to use the tool or test
that maintenance function at the indicated level of
maintenance. If the number or complexity of the tasks
c. Column3,Nomenclature. Name or identification
within the listed maintenance function vary at different
maintenance levels, appropriate work time figures will be
of the tool or test equipment.
d. Column 4, National/NATO Stock Number. The
shown for each level. The work time figure represents
the average time required to restore an item (assembly,
National or NATO Stock Number of the tool or test
subassembly, component, module, end item, or system)
to a serviceable condition under typical field operating
e. Column 5, Tool Number. The manufacturer's
This time includes preparation time
(including any necessary disassembly/assembly time),
B-5. Explanation of Columns in Remarks, Section
assurance/quality control time in addition to the time
Column 1, Reference Code.
required to perform the specific tasks identified for the
recorded in Column 6, Section II.
maintenance functions authorized in the Maintenance
Column 2, Remarks.
This column lists
Allocation Chart. The symbol designations for the
information pertinent to the maintenance function being
performed as indicated in the MAC, Section II.
Change 2 B-2