TM 9-6115-729-24
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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 man hours in whole hours or
decimals) in the appropriate sub column. 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 under the two level maintenance concept are as follows:
Field:
C - Operator or Crew maintenance
O - Unit maintenance
F - Direct Support maintenance
Sustainment:
L - Specialized Repair Activity (SRA)
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 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.
Explanation of Columns in the Tools and Test Equipment Requirements
Column (1) Tool or Test Equipment Reference Code. The tool or test equipment reference code correlates with a
code used in column (5) of the MAC.
Column (2) Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment
under the two-level MAC.
Column (3) Nomenclature. Name or identification of the tool or test equipment.
Column (4) National Stock Number (NSN). The NSN of the tool or test equipment.
Column (5) Tool Number. The manufacturer's part number, model number, or type number.
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