Items with these codes are not to be requested/requisi-
tioned 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 position code of the SMR code authorizes you to re-
place the item, but the source code indicates the item is
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. (AIso, refer to the
XB - If an XB item is not available from salvage, order it using the CAGEC and part number
XC - Installation drawing, diagram, instruction sheet, field service drawing, that is identified by
manufacturers part number.
XD - 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.
(2) Maintenance Code. Maintenance
(a) The maintenance code entered in
codes tell you the level(s) of maintenance
the third position tells you the lowest
authorized to USE and REPAIR support items.
maintenance level authorized to remove,
The maintenance codes are entered in the
replace, and use an item. The maintenance
third and fourth positions of the SMR code as
code entered in the third position will indicate
authorization to one of the following levels of
Crew or operator maintenance done within unit or aviation unit maintenance.
Unit or aviation unit level can remove, replace, and use the item.
Direct support or aviation intermediate level can remove, replace, and use the
General support level can remove, replace, and use the item.
Specialized repair activity can remove, replace, and use the item.
Depot level can remove, replace, and use the item.