TM 10-5411-203-13B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION IIa.Column1,GroupNumber. Column 1 lists the functional group code numbers, the purpose of which is to identifymaintenance significant components, assemblies, subassemblies, and modules with the next higher assembly. End itemgroup number shall be "00."b.Column2,Component/Assembly. Column 2 contains the names of components, assemblies, subassemblies, andmodules for which maintenance is authorized.c.Column3.MaintenanceFunctions. 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.Column4,MaintenanceCategory. Column 4 specifies, by the listing of a work-time figure in the appropriatesubcolumn(s), the category of maintenance authorized to perform the function listed in column 3. This figure representsthe active time required to perform that maintenance function at the indicated category of maintenance. If the number orcomplexity of the tasks within the listed maintenance function vary at different maintenance categories, appropriate work-time figures will be shown for each category. The work-time figure represents the average time required to restore anitem (assembly, subassembly, component, module, end item, or system) to a serviceable condition under typical fieldoperating conditions. This time includes preparation time (including any necessary disassembly/assembly time),troubleshooting/fault location time, and quality assurance/quality control time in addition to the time required to performthe specific tasks identified for the maintenance functions authorized in the maintenance allocation chart. The symboldesignations for the various maintenance categories are as follows:C - Operator or CrewO - UnitF - Direct SupportH - General SupportL - Specialized Repair Activity (SRA)D - Depote.Column5.ToolsandEquipment. Column 5 specifies, by code, those common tool sets (not individual tools) andspecial tools, TMDE, and support equipment required to perform the designated function.f.Column6,Remarks. This column shall, when applicable, contain a letter code, in alphabetical order, which shallbe keyed to the remarks contained in section IV.B-3
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