TM 55-4320-432-13&P
(2) 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 follows:
(a.) 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 the following levels of 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.
(b.) 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).
NOTE
Some limited repair may be done on an item at a lower level of maintenance, if authorized
by the Maintenance Allocation Chart (MAC) and SMR codes.
This portion will contain one of the following maintenance codes.
Code
Application/Explanation
O
- Organizational or (aviation unit) is the lowest level that cn do complete repair of the
item.
F
- Direct support or aviation intermediate is the lowest level that can do complete
repair of the item.
H
- General support is the lowest level that can do complete repair of the item..
C-4
