Items with these codes are not to be requested/
AO - (Assembled by
org/AVUM Level) requisitioned individually. The parts that make
A F - (Assembled by
up the assembled item must be requisitioned or
fabricated and assembled at the level of main-
A H - (Assembled by tenance indicated by the source code. If the
3d position code of the SMR code authorizes you
to replace the item, but the source code indi-
A L - (Assembled by
cates the item is assembled at a higher level,
order the item from the higher level of mainte-
A D - (Assembled by
X A - Do not requisition an "XA" - coded item. Order its next higher
(Also, refer to the NOTE below.)
X B - 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 by manufacturer's part number.
XD - Item is not stocked. Order an "XD" - coded item through normal
supply channels using the FSCM and part number given, if no NSN
NOTE : 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.
(2) 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:
(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 indi-
cate authorization to one of the following levels of maintenance.
Crew or operator maintenance done within organiza-
tional or aviation unit maintenance.
Organizational or aviation unit category can remove,
replace, and use the item.
Direct support or aviation intermediate level can
remove, replace, and use the item.
General support level can remove, replace, and use