B-3. EXPLANATION OF COLUMNS IN THE MAC (see SECTION II)
Column 1, Group Number. Column 1 lists functions group code numbers, the purpose of which is to identify
maintenance of significant components, assemblies, subassemblies, and modules with the next higher assembly.
End item group number shall be "00".
Column 2. Components/Assembly. Column 2 contains the names of components, assemblies, subassemblies,
and modules for which maintenance is authorized and its "useable on" code. Uncoded items are applicable to all
models. Identification of the "usable on" codes used in this publication are:
None at this time.
Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item listed in Column 2.
(See paragraph B-2 for a detailed explanation of these functions.)
Column 4, Maintenance Category. Column 4 specifies, by the listing of a work time figure in the appropriate sub-
column (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.
Appropriate work time figures will be shown for each category. The working figure represents the average time
required to restore an item (assembly, subassembly, components, 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), troubleshooting/fault location, 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 MAC. The
symbol designations for the various maintenance categories are as follows:
C - Operator or Crew
O - Organization
F - Direct Support
H - General Support
D - Deport
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.
Column 6, Remarks. This column shall, when applicable, contain a letter code, in alphabetical order, that shall be
keyed to the remarks contained in Section IV.