TM 5-3805-261-20
APPENDIX B
INTRODUCTION. (cont.)
B-3.
EXPLANATION OF COLUMNS IN THE MAC.
a.
Column 1, Group Number. Lists functional group code numbers, the purpose of which is to identify
maintenance significant components, assemblies, subassemblies and modules with the next higher assembly.
b.
Column 2, Component/Assembly. Contains the names of components, assemblies, subassemblies and
modules for which maintenance is authorized.
c.
Column 3, Maintenance Function. Lists the functions to be performed on the item listed in Column 2. (For
detailed explanation of these functions, refer to paragraph B-2.)
d.
Column 4, Maintenance Category. 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
(e.g., 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), fault
location/trouble-shooting 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. The symbol
designations for the various maintenance categories are as follows:
C .......................................................................................... Operator or Crew
O.......................................................................................... Organizational
F .......................................................................................... Direct Support
H .......................................................................................... General Support
D .......................................................................................... Depot
e.
Column 5, Tools and Equipment. 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 will, when applicable, contain a letter code, in alphabetic order, keyed to
the remarks contained in Section IV.
B-3
