TM 55-2840-254-23
B-5 MAINTENANCE FUNCTION (COLUMN 3)
Column 3 lists the functions to be performed on the items listed in column 2.
B-6 MAINTENANCE CATEGORIES AND WORK TIMES (COLUMN 4)
The maintenance categories (levels) AVUM, AVIM, and DEPOT are listed on the Maintenance Alloca-
tion Chart with individual columns that include the work times for maintenance functions at each mainte-
nance level. Work time presentations such as "0.1" indicate the average time it requires a maintenance
level to perform a specified maintenance function. If a work time has not been established, the columnar
presentation shall indicate "-.-." Maintenance levels higher than the level of maintenance indicated
are authorized to perform the indicated function.
B-7 TOOLS AND TEST EQUIPMENT (COLUMN 5 AND SECTION III)
Common tool sets (not individual tools), special tools, test, and support equipment required to perform
maintenance functions are listed alphabetically in Section III with a reference number to permit cross-
referencing to column 5 in the MAC. In addition, the maintenance category authorized to use the device is
listed along with the item National stock number (NSN), and, if applicable, the tool number to aid in
identifying the tool/device.
B-8 REMARKS (COLUMN 6 AND SECTION IV)
Remarks (identified by an alphabetic code in column 6) and other notes (identified by a number in
parentheses in the applicable column) are listed in Section IV to provide a ready reference to the defini-
tion of the remark/note.
B-6
