(1) Source code. The source code tells you how to get an item needed for maintenance, repair, or overhaul
of an end item/equipment. Explanation of source codes as follows:
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 re 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.
(Made at Unit/AVUM
They must be made from bulk material which is identified by the part
number in the DESCRIPTION and USABLE ON CODE (UOC) column
(Made at DS/AVUM
and listed in the Bulk Material group of the repair parts list in this
RPSTL. H the item is authorized to you by the 3rd position code of the
(Made at GS Level)
SMR code, but the source code indicates it is made at a higher level,
(Made at Specialized
order the item from the higher level of maintenance.
Repair Activity (SRA))
(Made at Depot)
Items with these codes are not to be requested/ requisitioned
individually. The puts that make up the assembled item must be
requisitioned or fabricated and assembled at the level of maintenance
indicated by the source code. H the 3rd position code of the SMR code
(Assembled by GS
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
(Assembled by SRA)
level of maintenance.
(Assembled by Depot)
Do not requisition an XA-coded item. Order its next higher assembly. (Also, refer to the NOTE below).
If an XB item is not available from salvage, order it using the FSCM and part number given.
Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer's part
Item is not stocked. Order an XD-coded item through normal supply channels using the FSCM and part
number given, if no NSN is available.
Cannibalization or controlled exchange, when authorized, may be used as a source of supply for items with
the above source codes, except for those source coded XA or those aircraft support items restricted by
requirements of AR 700-42.