Column 4, Maintenance Category.
(1) Column 4 specifies, by the listing of a "work time" figure in the appro-
priate subcolumn(s), the lowest level 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,
(2) If the number or complexity of the tasks within the listed maintenance
function vary at different maintenance levels, appropriate "work time" figures will be
shown for each level. The number of manhours specified by the "work time" figure rep-
resents the average time required to restore an item (assembly/subassembly/component/
module/end item/system) to a serviceable condition under typical field operating condi-
tions. This time includes preparation time, troubleshooting time, and quality assur-
ante/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 levels are as follows:
Operator or crew.
Direct support maintenance.
General support maintenance.
e. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool
sets (not individual tools), special tools and test equipment required to perform the
f. Column 6, Remarks. Column 6 contains a letter code in alphabetical order
which is keyed to the remarks contained in Section IV. If no remarks were required,
column 6 remains blank and Section IV is deleted.
COLUMN ENTRIES USED IN TOOL AND TEST EQUIPMENT REQUIREMENTS (SECTION III).
a. Column 1, Tool or Test Equipment Reference Code. The tool and test equipment ref-
erence code correlates with a maintenance function on the identified end item or compo-
b. Column 2, Maintenance Category. The lowest level of maintenance authorized to
use the tool or test equipment.
Column 3, Nomenclature. Name or identification of the tool or test equipment,
d. Column 4, National/NATO Stock Number. The National or NATO stock number of
tool or test equipment.
Column 5, Tool Number. The manufacturer's part number.