B-4. STANDARD GROUPS (Columns 1 and 2)
Standard groupings are used, as applicable, throughout this MAC. Maintenance manuals and RPSTL
will reflect these standard groupings as individual chapters, with sections in each chapter relative to the
individual complete systems, subsystems, modules, components, assemblies, or specific parts noted.
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 Allocation
Chart with individual columns that include the work times for maintenance functions at each
maintenance 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
definition of the remark/note.