ARMY TM 10-1670-271-23&P
AIR FORCE TO 14D1-2-464-2
MARINE CORPS TM 01136B-23&P/1
C-3. EXPLANATION OF COLUMNS (Section II) (CONT).
(1) Source Code. The source code tells you how you get an item needed for maintenance, repair, or
overhaul of an end item/equipment. Source codes are always the first two positions of the SMR code.
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 3d position of the SMR code.
PE
PF
PG
Code
Explanation
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 3d position of the SMR code. The complete kit must be requisitioned and
applied.
Code
Explanation
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
3d 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.
Code
Explanation
AO (Assembled by
Items with these codes are not to be requested/requisitioned
org 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 3d position code
DS/AVIM
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)
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