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TM 1-4920-448-13&P
*Complete repair: 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 to 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 follows:
Code
PA
PB
PC
PD
PE
PF
PG
KD
KF
KB
Code
MO -(Made at org / AWM
Category)
MF -(Made at DS / AVIM
Category)
MH -(Made at GS Category)
MD -(Made at Depot)
AO -(Assembled by org /
AVUM Category)
AF -(Assembled by DS / AVIM
Category)
AH -(Assembled by GS
Category)
AD -(Assembled by Depot)
XA
XB
XC
XD
Explanation
Stocked items; use the applicable NSN to request/requisition items
with these source codes. They are authorized to the category indi-
cated by the code entered in the 3rd position of the SMR code.
Items with these codes are not to be requested/requisitioned in-
dividually. They are part of a kit which is authorized to the main-
tenance category indicated in the 3rd position of the SMR code. The
complete kit must be requisitioned and applied.
Explanation
Items with these codes are no to be requested/requisitioned in-
dividually. They must be made from bulk material which is iden-
tified by NSN in the Description column and listed in the Bulk
Material Group in the repair parts list in this manual. If the item is
authorized to you by the 3rd position of the SMR code, but the
source code indicates it is made at a higher category, order the item
from the higher category of maintenance.
Items with these codes are not to be requested/requisitioned in-
dividually. The parts that make up the assembled item must be req-
uisitioned or fabricated and assembled at the category 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 category, order the
item from the higher category of maintenance.
Do not requisition an “XA” - coded item. Order its next higher as-
sembly. (Also, refer to the NOTE below.)
If an “XB” item is not available from salvage, order it using the
CAGEC and part number given.
Installation drawing, diagram, instruction sheet, field service draw-
ing, that is identified by manufacturers part number.
Item is not stocked. Order an “XDn - coded item through normal
supply channels using the CAGEC and part number given, if no
NSN is available.
D-2
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