ARMY TM 9-6115-673-13&P
AIR FORCE TO 35C2-3-512-1
EXPLANATION OF COLUMNS (Sections II and III) - Continued
Do not requisition an "XA" coded item. Order its next higher assembly.
If an "XB" item is not available from salvage, order it using the CAGEC and part number
Installation drawing, diagram, instruction sheet, field service drawing, that is identified by
manufacturer's part number.
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"
or those aircraft support items restricted by requirements
of AR 750-1.
Maintenance Code. Maintenance codes tell you the category 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 category authorized to remove, replace, and use an item.
The maintenance code entered in the third position will indicate
authorization to one of the following categories of maintenance.
Crew or operator maintenance done within organization or aviation unit maintenance.
Organizational or aviation unit category can remove, replace, and use the item.
Direct support or aviation intermediate category can remove, replace, and use the item.
General support category can remove, replace, and use the item.
Specialized repair activity can remove, replace, and use the item.
Depot category can remove, replace, and use the item.
The maintenance code entered in the fourth position tells whether or not
the item is to be repaired and identifies the lowest maintenance category
with the capability to do complete repair (i.e., perform all authorized repair
functions). This position will contain one of the following maintenance
Some limited repair may be done on the item at a
lower category of maintenance, if authorized by
the Maintenance Allocation Chart (MAC) and