* 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.
**NOTE : Items coded PC are subject to deterioration.
MO - (Made at unit AVUM level)
MF - (Made at DS/AVIM level)
MD - (Made at Depot)
AO - (Assembled by org AVUM Level)
AF - (Assembled by DS/AVUM Level)
AD - (Assembled by Depot)
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
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.
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.
Items with these 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.
Items with these codes are not to be requested/requisitioned individually. They
must be made from bulk material which 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.
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 items are 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.