ARMY TM 9-2815-257-24
AIR FORCE TO 38G1-128-2
MARINE CORPS TM 10155A/2815-24/3
c. Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item listed in
Column 2. (For detailed explanation of these functions, see paragraph B-2).
d. 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 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 vary at different maintenance levels, appropriate work-time figures are
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 maintenance allocation chart. the
symbol designations for the various maintenance levels are as follows:
C Operator or crew maintenance
F Direct support maintenance
L Specialized Repair Activity (SRA)(5)
H General support maintenance
Column 5, Tools and Test Equipment Reference Code. Column 5 specifies the common tool sets
(not individual tools), common TMDE, special tools, special TMDE, and special support equipment required to
perform the designated function. Codes are keyed to tools and test equipment in Section III.
Column 6, Remarks. When applicable, this column contains a letter code, in alphabetical order,
which is keyed to the remarks contained in Section IV.
B-4. Explanation of Columns in Tool and Test Equipment Requirements, Section III.
Column 1, Reference Code. The tool and test equipment reference code correlates with a code used in
the MAC, Section II, Column 5.
b. Column 2, Maintenance Level. The lowest level of maintenance authorized to use the tool or test
Column 3, Nomenclature. Name or identification of the tool or test equipment.
d. Column 4, National Stock Number. The National Stock Number of the tool or test equipment.
Column 5, Tool Number. The manufacturer's part number, model number, or type number.
(5) This maintenance level is not included in Section II, Column 4 of the MAC. Functions to this level of
maintenance are identified by a work-time figure in the "H" column in Section II, Column 4, and an associated
reference code is used in the Remarks column. This code is keyed to Section IV, remarks, and the SRA
complete repair application is explained there.