TM 5-3825-270-23&P
0219
EXPLANATION OF COLUMNS - Continued
Table 2. Source Code 1st and 2nd Positions - Continued
Application/Explanation
Code
XC***
Installation drawing, diagram, instruction sheet,
field service drawing, that is identified by
manufacturer's part number.
XD***
Item is not stocked. Order an "XD" coded item
through normal supply channels using the
CAGEC and part number given, if no NSN is
available.
***NOTE: Cannibalization or controlled exchange, when authorized, may be used as a source of
supply for items with this source code.
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 3rd and 4th positions of the SMR code as follows:
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 the following levels of maintenance:
Table 3. Maintenance Code 3rd Position
Application/Explanation
Code
C
Crew or operator maintenance done within
Service level.
O
Service level can remove, replace, and use the
item.
F
Field Support level can remove, replace, and use
the item.
H
Below Depot 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.
The maintenance code entered in the 4th 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 the item at a lower level of maintenance, if authorized by the
Maintenance Allocation Chart (MAC) and SMR codes.) This position will contain one of the following maintenance
codes: