TM 9-4310-397-24P
Code
Explanation
MO- (Made at Unit/AVUM
Items with these codes are not to be requested/requisitioned
level)
individually. They must be made from bulk material which is
MF-
(Made at DS/AVUM
identified by the part number in the DESCRIPTION and USABLE
level)
ON CODE (UOC) column and listed in the Bulk Material group of the
MH-
(Made at GS level)
repair parts list in the RPSTL. If the item is authorized to you by the
ML-
(Made at Specialized
3rd position code of the SMR code, but the source code indicates it
Repair Activity (SRA))
is made at a higher level, order the item from the higher level of
MD-
(Made at Depot)
maintenance.
AO-
(Assembled by Unit/
Items with these codes are not to be requested/requisitioned
AVUM level)
individually. The parts that make up the assembled item must be
requisitioned or fabricated and assembled at the level of
AF-
(Assembled by
maintenance indicated by the source code. If the 3rd position code
DS/AVUM level)
of the SMR code, authorizes you to replace the item, but the
source code indicates the items are assembled at a higher level,
AH-
(Assembled by GS
order the item from the higher level of maintenance.
Category)
AL-
(Assembled by SRA)
AD-
Assembled by Depot)
Code
Explanation
XA -- Do not requisition an “XA”-coded item. Order its next higher assembly. (Also, refer to the NOTE below.)
XB -- If an "XB" item is not available from salvage, order it using the CAGE Code and part number given.
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 CAGE Code
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.
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