TM 10-1670-269-23&P
0045 00
0045 00-2
Source Code. The source code tells you how to get an item needed for maintenance, repair, or
overhaul of an end item/equipment. Source codes are always the first and second positions of the
SMR code. Explanations of source codes follow:
SOURCE CODE
EXPLANATION
PA
PB
PC
PD
PE
PF
PG
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.
KD
KF
KF
Items with these codes are not to be requested/
requisitioned individually. They are part of a kit that is
authorized to the maintenance category indicated in
the 3rd position of the SMR code. The complete kit
must be requisitioned and applied.
MO – (Made at org/AVUM Level)
MF – (Made at DS/AVUM Level)
MH – (Made at GS Level)
ML – (Made at Specialized Repair Act (SRA))
MD – (Made at Depot)
Items with these codes are not to be
requested/requisitioned individually. They must be
made from bulk material that is identified by the part
number in the DESCRIPTION and USABLE ON
CODE (UOC) column and listed in the Bulk Material
group of 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.
AO – (Assembled by org/AVUM Level)
AF – (Assembled by DS/AVIM Level)
AH – (Assembled by GS Category)
AL – (Assembled by SRA)
AD – (Assembled by Depot)
Items with these codes are not to be
requested/requisitioned 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 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 and XB-coded item is not available from salvage,
order it using the CAGEC and the given part number.
XC -
The installation drawing, diagram, instruction sheet,
and field service drawing that is identified by
manufacturers part number.
XD -
Item is not stocked. Order an XD-coded item through
normal supply channels using the CAGEC and the
part number given, if no NSN is available.
