TM 9-6115-664-13&P
Code
Explanation
ML - Made at Specialized
If the item is authorized to you by the third position
Repair Activity (SRA)
code of the SMR code, but the source code indicates it
MD - Made at Depot
is made at a higher category, order the item from the
higher category of maintenance.
AO - Assembled by unit/
Items with these codes are not to be requested/
AVUM category
requisitioned individually. The parts that make up the
AF - Assembled by DS/
assembled item must be requisitioned or fabricated and
AVIM category
assembled at the category of maintenance indicated by
AH - Assembled by GS
the source code. If the third position code of the SMR
category
code authorizes you to replace the item, but the source
AL - Assembled by SRA
code indicates the item is assembled at a higher category,
AD - Assembled by Depot
order the item from the higher category of maintenance.
XA - Do not requisition an "XA" coded item. Order its next higher assembly.
(Also, refer to NOTE below.)
XS - If an "XS" item is not available from salvage, order it using the CAGEC and part number given.
XC - Installation drawing, diagram, instruction sheet, or 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 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:
Code
Explanation
C -
Crew or operator maintenance done within unit or aviation maintenance.
O -
Unit or aviation unit category can remove, replace, and use the item.
F -
Direct support or aviation intermediate category can remove, replace, and use the item.
H -
General support category can remove, replace, and use the item.
L -
Specialized repair activity can remove, replace, and use the item.
D -
Depot category can remove, replace, and use the item.
G-3
