B-3. Column Entries.
a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify
components, assemblies, subassemblies, and modules with the next higher assembly.
b. Column 2, Component Assembly. Column 2 contains the noun names of components,
assemblies, subassemblies, and modules for which maintenance is authorized.
c. Column 3, Maintenance Functions. Column 3 lists the functions to be performed on the item listed
in column 2. When items are listed without maintenance functions, it is solely for purpose of having the
group numbers in the MAC and RPSTL coincide.
d. Column 4, Maintenance Category. Column 4 specifies, by the listing of a "work time" figure in the
appropriate subcolumn(s), the lowest 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 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 number of task-hours 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 serviceable condition under typical field operating conditions. This time includes
preparation time, troubleshooting 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. Subcolumns of column 4 are as follows:
C - Operator/Crew
O - Organizational
F - Direct Support
H - General Support
D - Depot
e. Column 5, Tools and Equipment. Column 5 specifies by code, those common tool sets (not
individual tools) and special tools, test, and support equipment required to perform the designated
f. Column 6, Remarks. Column 6 contains an alphabetic code which leads to the remark in section
IV, Remarks, which is pertinent to the item opposite the particular code.
B-4. TOOL and Test Equipment Requirements (Sect. Ill).
a. Tool or Test Equipment Reference Code. The numbers in this column coincide with the numbers
used in the tools and equipment column of the MAC. The numbers indicate the applicable tool or test
equipment for the maintenance functions.
b. Maintenance Category. The codes in this column indicate the maintenance category allocated
the tool or test equipment.
c. Nomenclature. This column lists the noun name and nomenclature of the tools and test
equipment required to perform the maintenance functions.
d. National/NATO Stock Number. This column lists the National/NATO stock number of the
specific tool or test equipment.
e. Tool Number. This column lists the manufacturer's part number of the tool followed by the
Federal Supply Code for manufacturers (5-digit) in parentheses.
B-5. Remarks (Sect. IV).
a. Reference Code. This code refers to the appropriate item in section II, column 6.
b. Remarks. This column provides the required explanatory information necessary to clarify items
appearing in section Il.