TM 5-4310-393-24P
(1)
Source Code. The source code tells you how to get an item needed for maintenance, repair, or overhaul of an
end item/ equipment. Explanations of source codes follows:
Code
Explanation
PA
Stocked items; use the applicable NSN to request/requisition
items with these source codes. They are authorized to the
category indicated by the code entered in the 3rd position of the
SMR code.
PB
PC**
** NOTE: Items coded PC are subject to deterioration
PD
PE
PF
PG
KD
Items with "K" codes are not to be requested/requisitioned
individually. They are part of a kit which is authorized to the
maintenance category indicated in the 3rd position of the SMR
code. The complete kit must be requisitioned and applied.
KF
KB
MO
Made at org/AVUM
Items with "M" codes are not to be requested/requisitioned
Level
individually They must be made from bulk material which is
identified by the number in the DESCRIPTION and USABLE
ON CODE (UOC) column with and listed in the Bulk Material
group on the repair parts list in the RPSTL. If the item is
authorized to you by the 3rd 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.
MF
Made at DS/AVUM
Level
MH
Made at GS Level
ML
Made at Specialized
Repair Activity (SRA)
MD
Made at Depot
AO
Assembled by
Items with "A" codes are not to be requested/requisitioned
org/AVUM Level
individually. The parts that make up the assembled item must
be requisitioned or fabricated and assembled at the level of
maintenance indicated by the source code. If the 3rd position
code of the SMR code authorizes you to replace the item, but
the source code indicates the items are assembled at a higher
level, order the item from the higher level of maintenance.
AF
Assembled by
DS/AVIM Level
AH
Assembled by GS
Category
AL
Assembled by SRA
AD
Assembled by Depot
XA
Do not requisition "XA" -coded item. Order its next higher
assembly. (Also, refer to the NOTE below).
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