TM 5-4310-372-14
APPENDIX B - continued
B-3 .
COLUMN ENTRIES USED IN THE MAC.
a .
Column 1, Group Number.
Column 1 lists group numbers,
the purpose of which is to identify components, assem
b l i e s ,
subassemblies,
and modules with the next higher
assembly.
b.
C o l u m n 2 , C o m p o n e n t / A s s e m b l y .
Column 2 contains the
n a m e s o f c o m p o n e n t s ,
a s s e m b l i e s , s u b a s s e m b l i e s , a nd
modules for which maintenance is authorized.
c .
C o l u m n 3 , M a i n t e n a n c e F u n c t i o n s .
Column 3 lists the
functions to be performed on the item listed in Column
2 .
( F o r d e t a i l e d e x p l a n a t i o n o f t h e s e f u n c t i o n s , s e e
paragraph C-2).
d .
Column 4, Maintenance Level.
Column 4 specifies, by the
listing
of a “work time” figure in the appropriate sub-
column (s), the lowest level of maintenance authorized to
perform the
function listed in Column 3.
T h i s f i g u re
represents the active time required to perform the main-
tenance function at the indicated level of maintenance.
I f t h e n u m b e r o r c o m p l e x i t y o f t h e t a s k s w i t h i n t he
l i s t e d m a i n t e n a n c e f u n c t i o n v a r y a t d i f f e r e n t m a i n t e n-
ance levels, appropriate work time figures will be shown
for each level.
The number of manhours specified by the
work time figure represents the average time required to
r e s t o r e a n i t e m ( a s s e m b l y , ’ subassembly, component,
module, end item,
or system) to a serviceable condition
u n d e r t y p i c a l
f i e l d o p e r a t i n g c o n d i t i o n s .
This time
i n c l u d e s p r e p a r a t i o n
time, troubleshooting time, and
q u a l i t y a s s u r a n c e / q u a l i t y c o n t r o l t i m e , i n a d d i t i o n to
t h e t i m e
r e q u i r e d
t o p e r f o r m
t h e s p e c i f i c t a s k s
indentified for the maintenance functions authorized in
t h e m a i n t e n a n c e a l l o c a t i o n c h a r t .
The symbol desig-
n a t i o n s f o r t h e v a r i o u s m a i n t e n a n c e l e v e l s a r e a s
follows:
c . . l l . . . . . . . . l . . . . . . l . . . . . . . . . l l l . . . l . l Operator / Crew
o . . . l . . . . . . . . . . . . . . . . . . . . . . . l . Organizational maintenance
F . . . . . . . . . . . . . . . . . . . . . . . ... Direct Support maintenance
H l . . . . l l . . l . . l l . . l . l . l . . l l . . . General Support maintenance
D l l l l . . l l . . , . , . . . l l . l . . . l l l l . . . l . , . , . l Depot maintenance
B-3
