TM 10-1670-272-23&P 0045 00
0045 00-3
NOTE
Cannibalization or controlled exchanged, when authorized, may be used
as a source of supply for items with the above source codes, except for
those source coded XA or those aircraft support item restricted by
requirements of AR 750-1.
Maintenance Code. Maintenance codes tell you the level(s) of maintenance authorized to USE and
REPAIR support items. The maintenance codes are entered in the third and fourth positions of the SMR
Code as follow:
Third position. The maintenance code entered in the third position tells you the lowest
maintenance level authorized to remove, replace, and use an item. The maintenance code entered
in the third position will indicate authorization to one of the following levels of maintenance.
MAINTENANCE CODE
APPLICATION/EXPLANATION
C -
Crew or operator maintenance done within
organizational or aviation unit maintenance.
O -
Organizational or aviation unit category can
remove, replace, and use the item.
F -
Direct support or aviation intermediate level can
remove, replace, and use the item.
H -
General Support level can remove, replace, and
use the item.
L -
Specialized repair activity can remove, replace,
and use the item.
D -
Depot level can remove, replace, and use the
item.
Fourth position. The maintenance code entered in the fourth position tells whether or not the item
is to be repaired and identifies the lowest maintenance level with the capability to do complete
repair (i.e., perform all authorized repair functions.) Some limited repair may be done on the item
at a lower level of maintenance, if authorized by the Maintenance Allocation Chart (MAC) and SMR
code. This position will contain one of the following maintenance codes.
MAINTENANCE CODE
APPLICATION/EXPLANATION
O -
Organizational (or aviation unit) is the lowest level
that can do complete repair of the item.
F -
Direct support (or aviation intermediate) is the
lowest level that can do complete repair of the
item.
