EXPLANATION OF COLUMNS IN THE MAC, SECTION II.

TM5-4120-383-14

B-3.

EXPLANATION OF COLUMNS IN THE MAC, SECTION II.

a. Column 1, Group Number.

Column 1 lists functional group

code numbers, the purpose of which is to identify maintenance

significant components assemblies, subassemblies, and modules with

the next higher assembly.

End item group number shall be "00."

b. Column 2, Component/Assembly. Column 2 contains the names

of components assemblies subassemblies and modules for which

maintenance is authorized.

c. Column 3, Maintenance Functions. 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, by the

listing of a work time figure in the appropriate subcolumn(s), the

category of maintenance authorized to perform the function listed

in column 3. This figure represents the active time required to

perform the 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

categories appropriate work time figures will be shown for each

category.

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/quality

control 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 categories are as follows.

C . . . . . . . . . . . . . . Operator or Crew

O .. . . . . . . . . . . .. . Organizational Maintenance

F . . . . . . . . . . . .. . . Direct Support Maintenance

H . . . . . . . . . . . . . . . General Support Maintenance

D . . . . . . . . . . . . . . . . Depot Maintenance

e. Column 5, Tools and Equipment. Column 5 specifies, by code,

those common tool sets (not individual tools) and special tools,

TMDE, and support equipment required to perform the designated

function.

f. Column 6, Remarks. Column 6 contains a note number which

shall correspond to the notes contained in Section IV.

B-3