T M
9 - 2 3 5 0 - 2 3 8 - 2 4 P -1
C o d e
E x p l a n a t i on
A O - ( A s s e m b l e d by
U n i t / A V U M L e v e l)
A F - ( A s s e m b l e d b y D S/
A V I M L e v e l)
A H - ( A s s e m b l e d b y GS
L e v e l)
A L - ( A s s e m b l e d b y
S R A )
A D - ( A s s e m b l e d by
D e p o t)
Items with these codes are not to be requested/requisitioned 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 3d position code of the SMR code authorizes you to
replace 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. (Also, refer to the
N O T E b e l o w . )
XB- lf an XB 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
m a n u f a c t u r e r s p a r t n u m b e r.
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.
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 source coded XA or
those aircraft support items restricted by requirements of AR 750 -1.
( 2 ) M a i n t e n a n c e C o d e . M a i n t e n a n c e
(a) T h e m a i n t e n a n c e c o d e e n t e r e d in
codes tell you the level(s) of maintenance au-
the third position tells you the lowest mainte-
thorized to USE and REPAIR support items.
nance level authorized to remove, replace, and
The maintenance codes are entered in the third
u s e a n i t e m . T h e m a i n t e n a n c e c o d e e n t e r e d in
and fourth positions of the SMR code as fol-
the third position will indicate authorization to
l o w s:
one of the following levels of maintenance.
C o d e
A p p l i c a t i o n / E x p l a n a t i on
C
-Crew or operator maintenance done within unit or aviation unit
m a i n t e n a n c e .
O
-Unit or aviation unit level can remove, replace, and use the item.
F
-Direct support or aviation intermediate level can remove, replace,
and use the item.
H
-General support level can remove, replace, and use the item.
L
-Specialized repair activity can remove, replace, and use the item.
D
-Depot level can remove, replace, and use the item.
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