requested/requisitioned individually. The parts that
make up the assembled item must be requisitioned or
fabricated and assembled at the level of maintenance
indicated by the source code. If the 3rd position code of
the SMR code authorizes you to replace the item, but
the source code indicated the item is assembled at a
higher level, order the item from the higher level of
XA- Do not requisition an "XA"-coded item. Order its next higher assembly. (Also, refer to the NOTE below.)
If an "XB" item is not available from salvage, order it using the CAGEC and part number given.
Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer's part
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.
Cannibalization or controlled exchange, when authorized, may be used as a source of supply for
items with the above source codes, except for those source coded "XA".
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:
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.
- Crew or operator maintenance done within organizational maintenance.
- Organizational can remove, replace, and use the item .
- Direct support level can remove, replace, and use the item.
- General support level can remove, replace, and use the item.
- Specialized repair activity can remove, replace, and use the item.
- Depot level can remove, replace, and use the item.