Stock 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
**NOTE: Items coded PC are subject to deterioration.
Items with these codes are not to be requested/requisitioned individually. They are part of a
kit which is authorized to the maintenance level indicated in the 3rd position of the SMR
code. The complete kit must be requisitioned and applied.
(Made at Unit/AVUM Level)
(Made at GS Level)
(Made at Specialized Repair
(Made at Depot)
(Assembled by Unit/AVUM
(Assembled by DS/AVIM
(Assembled by SRA)
(Assembled by Depot)
Do not requisition an "XA"-coded item Order its next higher assembly. (Refer to the NOTE below.)
If an "XB" item is not available from salvage, order it using the CAGEC and part number.
Installation drawing, diagrams, 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 CAGEC 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 750-1.
Maintenance Code. Maintenance codes tell you the level(s) of maintenance authorized to USE and
REPAIR support items. The maintenance codes are entered in the third and fourth positions of the SMR code as follows:
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 in
dividually. 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.