EXPLANATION OF COLUMNS IN THE MAC, SECTION II (Cont).
Column (4) - Maintenance Level. Column 4 specifies each level of maintenance authorized to
perform each function listed in Column 3, by indicating a 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 per-
form 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, sub-
assembly, component, module, end item, or system) to a serviceable condition under typical field operating condi-
tions. This time includes preparation time (equipment 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:
C - Operator or Crew Maintenance
O - Unit Maintenance
F - Direct Support Maintenance
L - Specialized Repair Activity (SRA)5
H - General Support Maintenance
D - Depot Maintenance
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
Column (6)- Remarks. When applicable, this column contains a letter code, in alphabetical order,
which is keyed to the remarks contained in Section IV.
EXPLANATION OF COLUMNS IN TOOLS AND TEST EQUIPMENT REQUIRE-
MENTS, SECTION Ill.
a. Column (1) - Tool or Test Equipment Reference Code. The tool or 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
c. 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.
e. Column (5) - Tool Number. The manufacturers part number, model number, or type number.
EXPLANATION OF COLUMNS IN REMARKS, SECTION IV.
Column (1) - Remarks Code. The code recorded in Section II, column (6).
Column (2) - Remarks. This column, along with the related codes, clarifies maintenance and
inspection functions by different MOS involved in maintaining some components.
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 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.