Quantcast EXPLANATION OF COLUMNS IN THE MAC (Cont)

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TM 9-2330-331-14&P
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EXPLANATION OF COLUMNS IN THE MAC - Continued
Column 4, Maintenance Level. Column 4 specifies each level of maintenance authorized to perform each
function listed in Column 3, by indicating work time required (expressed as manhours in whole hours or
decimals) in the appropriate subcolumn. This work time figure represents the active time required to perform
that maintenance function at the indicated level of maintenance. If the number or complexity of the tasks within
the listed maintenance function varies at different maintenance levels, appropriate work time figures are to be
shown for each level. 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 (including any necessary disassembly/assembly time),
troubleshooting/fault location time, and quality assurance 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 levels are as follows:
Field:
C
Operator or crew maintenance
O
F
Direct support maintenance
Sustainment:
H
General support maintenance
D
Depot maintenance
NOTE
The "L" maintenance level is not included in Column 4 of the MAC. Functions
to this level of maintenance are identified by a work time figure in the "H" column
of Column 4, and an associated reference code is used in the REMARKS
Column 6. This code is keyed to the remarks and the Specialized Repair
Activity (SRA) complete repair application is explained there.
Column 5, Tools and Equipment Reference Code. Column 5 specifies, by code, those common tool sets
(not individual tools), common Test, Measurement and Diagnostic Equipment (TMDE), and special tools, special
TMDE, and special support equipment required to perform the designated function. Codes are keyed to the
entries in the tools and test equipment table.
Column 6, Remarks Code. When applicable, this column contains a letter code, in alphabetical order, which
is keyed to the remarks table entries.
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