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. If
the item is authorized to you by the third position code 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.
requested/requisitioned individually. The parts that make
up the assembled item must be requisitioned or
fabricated and assembled at the category of
maintenance indicated by the source code. If the third
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.
XA - Do not requisition an 'XA' coded item. Order its next higher assembly.
XB - If an "XEB item is not available from salvage, order it using the CAGEC and part number given.
XC - Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer's
XD - Item is not stocked.
Order an 'XD' coded item through normal supply channels using the CAGEC
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.