TM 5-2420-230-24-1
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 to 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 the Remarks Code column (6). This code is keyed to the remarks and the
SRA complete repair application is explained there.
e. Column (5), Tools and Equipment Ref Code. Column (5) specifies, by code, those common tool kits (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 tools and test equipment in
Section III.
f. Column (6), Remarks Code. When applicable, this column contains a letter keyed to the remarks contained in
Section IV.
B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT
REQUIREMENTS, SECTION III.
a. Column (1), Tool or Test Equipment Reference Code. The code correlates with a code used in the MAC,
Section II, Column (5).
b. Column (2), Maintenance Level. Lowest maintenance level authorized to use tool/equipment.
c. Column (3), Nomenclature. Name or identification of the tool or test equipment.
d. Column (4), National Stock Number (NSN). National Stock Number of the tool or test equipment.
e. Column (5), Tool Number. The manufacturer's part number, model number, or type number.
B-5. EXPLANATION OF COLUMNS IN REMARKS, SECTION IV.
a. Column (1), Remarks 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.
Change 1
B-3