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 this
RPSTL. H 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.
XA-- Do not requisition "XA"-coded item. Order its next higher assembly. (Also Refer to the NOTE below.)
XB-- If an XB" item is not available from salvage, order it using the FSCM and part number given.
XC--Installation drawing, diagram, instruction sheet, field service drawing, that is identified manufacturer's part
XD- - 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 750-
(2) Maintenance Code. Maintenance codes tells 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:
(a) The maintenance code entered in the third position tells you the lowest maintenance level authorized to
remove, replace, and use an item. The maintenance code entered in the third position will indicate authorization to one
of the following levels of maintenance.
C --Crew or operator maintenance done within organizational or aviation unit maintenance.
O --Organizational or aviation unit category can remove, replace, and use the item.
F --Support or aviation intermediate level can remove, replace, and use the item.
(Assembled by GS
(Assembled by SRA)
(Assembled by Depot)