TM 9-4120-399-14
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 . . . . . . . . . . . . . . . . .Unit 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. This column shall, when applicable, contain a letter code, in
alphabetic order, which shall be keyed to the remarks contained in Section IV.
B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS,
SECTION III.
a. Column 1, Reference Code. The tool and test equipment reference code correlates with
a code used in the MAC, Section II, Column 5.
b. Column 2, Maintenance Category. The lowest category of maintenance authorized to
use the tool or test equipment.
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 manufacturer's part number.
B-5. EXPLANATION OF COLUMNS IN REMARKS, SECTION IV.
a. Column 1, Reference Code. The code recorded in column 6, Section II.
b. Column 2, Remarks. This column lists information pertinent to the maintenance
function being performed as indicated in the MAC, Section II.
B-3