TM 10-4320-344-24P-3
Code
Explanation
Items with these codes are not to be
requested/requisitioned individually.
They must be made from bulk material
MO-
(Made at Unit/AVUM Level)
which is Identified by the part number
MF-
(Made at DS/AVIM Level)
in the DESCRIPTION AND USABLE ON CODE
MH-
(Made at GS Level) >
(UOC) column and listed in the Bulk
ML-
(Made at Specialized Repair
Material group of the repair parts list
Act (SRA))
in this RPSTL. If the item is
MD-
(Made at Depot)
authorized to you by the 3d position
code of the SMR code, but the source
code indicates it is made at a higher
level, order the item from the higher
level of maintenance.
Items with these codes are not to be
requested/requisitioned individually.
The parts that make up the assembled
AO-
(Assembled by Unit/AVUM Level)
item must be requisitioned or
AF-
(Assembled by DS/AVIM Level)
fabricated and assembled at the level
AH-
(Assembled by GS Category) >
of maintenance indicated by the source
AL-
(Assembled by SRA)
code. If the 3d position code of the
AD-
(Assembled by Depot)
SMR code authorizes you to replace the
item, but the source code indicates the
item is assembled at a higher level,
order the item from the higher level of
maintenance.
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 FSCM
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 FSCM 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 700-42.
3.2.2. Maintenance Code. Maintenance codes tells 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:
3.2.2.1. Maintenance Code Third Position. 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.
Code
Application/Explanation
C
-Crew or operator maintenance done within unit
or aviation unit maintenance.
O
-Unit or aviation unit category can remove,
replace, and use the item.
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