C o d e
E x p l a n a t i on
AO - (Assembled by
AF - (Assembled by
AH - (Assembled by
AL - (Assembled by
S R A)
AD - (Assembled by
D e p o t)
Items with these codes are not to be requested/requisitioned indiv-
dually. The parts that make up the assembled item must be requisi-
tioned or fabricated and assembled at the level of maintenance in-
dicated by the source code. If the 3d 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.
XA - Do not requisition an XA-coded item. Order its next higher assembly.
(Also, refer to the NOTE
XB - If an XB item is not available from
salvage, order it using the FSCM and part number given.
X G - Installation drawing, diagram, instruction sheet, field service drawing, that is identified by man -
ufacturers 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 is available.
N O T E
Cannibalization or controlled exchange, when authorized, may be used as
a source of supply for items with the above source codes, except for those
XA or those aircraft support items restricted by
requirements of AR 700-42.
(2) M a i n t e n a n c e C o d e.
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,
i n d i c a t e a u t h o r i z a t i o n
C o de
replace, and use an item. The maintenance code entered in the third position will
to one of the following levels of maintenance.
A p p l i c a t i o n / E x p l a n a t i on
-Crew or operator maintenance
tion unit maintenance.
-Organizational or aviation unit
use the item.
done within organizational or avia-
category can remove, replace, and
-Direct support or aviation intermediate level can remove, replace,
and use the item.
-General support level can remove, replace, and use the item.