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TM 9-4120-403-24P
* Complete Rear: Maintenance capacity, capability, and authority to perform all corrective maintenance tasks
of the "Repair" function in a use/user environment in order to restore serviceability to a failed item.
(1) Source Code. The source code tells you how you get an item needed for maintenance, repair, or
overhaul of an end item/equipment. Explanations of source codes follow.
Code
Explanation
PA
PB
Stocked items; use the applicable NSN to request/requisition items with these
PC**
source codes. They are authorized to the category indicated by the code
PD
entered in the 3rd position of the SMR code.
PE
PF
**NOTE : Items coded PC are subject to deterioration.
PG
KD
Items with these codes are not to be requested/requisitioned individually. They
KF
are part of a kit which is authorized to the maintenance category indicated in
KB
the 3rd position of the SMR code. The complete kit must be requisitioned and
applied.
MO - (Made at org/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 org/
Items with these codes are not to be requested/requisitioned
AVUM
individually. The parts that make up the assembled item must be
Level)
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
of the SMR code, authorizes you to replace the item, but the
Level)
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)
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.
}
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