TM 5-1940-321-13&P
A.3.2. Column 2, Component/Assembly. Column 2 contains the item names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
A.3.3. Column 3, Maintenance Functions. Column 3 lists the functions to be performed on the item listed in Column
A.3.4. 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 complexities 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 ( condition/follow-on tasks, 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:
NOTE:
When a complete replace or repair task performed at higher level maintenance includes lower level
maintenance tasks (equipment condition/follow-on tasks), the lower level work-time figures in the MAC
must be added to the higher level work-time shown in the MAC to determine the total to accomplish that
maintenance function.
C ...............................Operator or crew maintenance
O...............................Unit Maintenance
F ...............................Direct support maintenance
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L ...............................Specialized Repair Activity (SRA)
H ...............................General support maintenance
D ...............................Depot maintenance
A.3.5. Column 5, Tools and Test Equipment reference code. Column 5 specifies, by code, those common tool sets
(not individual tools), common TMDE, and 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.
A.3.6. Column 6, Remarks. When applicable, this column contains a letter code, in alphabetical order, which is
keyed to the remarks contained in Section IV.
A.4.
Explanation of Columns in Tool and Test Equipment Requirements, Section III.
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This maintenance level is not included in Section II, column ( 4 ) of the Maintenance Allocation Chart.
Functions to this level of maintenance are identified by a work-force figure in the "H" column of Section II, column
( 4 ); and an associated reference code is used in the Remarks column ( 6 ). This code is keyed to Section IV,
Remarks, and the SRA complete repair application is explained there.
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