Items with these codes are not to be requested/requisitioned individually. They are part
of a kit which is authorized to the maintenance category indicated in the third posi-
tion of the SMR code. The complete kit must be requisitioned and applied.
MO- Made at org/-
Items with these codes are not to be requested/requisitioned individually.
They must be made from bulk material which is identified by the part num-
MF- Made at DS/-
ber in the description and usable on code (UOC) column and listed in the
Bulk Material group of the repair parts list. If the item is authorized to you
MH- Made at GS
by the third position code of the SMR code, but the source code indicates it
is made at a higher category, order the item from the higher category of
ML- Made at Special-
MD-Made at Depot
AO- Assembled by org/-
Items with these codes are not to be requested/requisitioned individually. The
parts that make up the assembled item must be requisitioned or fabricated
AF- Assembled by DS/-
and assembled at the category of maintenance indicated by the source code.
If the disposition code of the SMR code authorizes you to replace the item,
AH- Assembled by
but the source code indicates the item is assembled at a higher category,
order the item from the higher category of maintenance.
AL- Assembled by SRA
AD- Assembled by Depot
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 FSCM and part number given.
Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturers part
Item is not stocked. Order an "XD" coded item through normal supply channels using the FSCM 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.
(2) 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:
(a) 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 organizational or aviation 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.
(b) 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 codes.
Some limited repair may be done on the item at a lower category of maintenance, if
authorized by the Maintenance Allocation Chart (MAC) and SMR codes.
Organizational or aviation unit is the lowest category that can do complete repair of the item.