Explanation of Columns in the Tools and Test Equipment Requipments

TM 5-5420-279-23

Column 2, Component/Assembly. Column 2 contains the item names of components,

assemblies, subassemblies, and modules for which maintenance is authorized.

Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item

listed in Column 2. (For a detailed explanation of these functions, refer to "Maintenance

Functions" outlined above.)

Column 4, Maintenance Level. Column 4 specifies each level of maintenance authorized to

perform each function listed in Column 3, 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 Unit Maintenance

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 for 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 Column 6 REMARKS. 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), 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.

Explanation of Columns in the Tools and Test Equipment Requipments

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.

Change 1 Appendix B-3