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Explanation
Code
XD-Item is not stocked. Order an "XD" coded item
X A - D o not requisition an "XA" coded item. Order its
through normal supply channels using the FSCM
n e x t higher assembly.
and part number given, if no NSN is available.
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 by
m a n u f a c t u r e r s  part  number.
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
" X A " or those aircraft support items restricted by requirements of AR 750-1.
F -- D i r e c t support or aviation intermediate category can
(2) M a i n t e n a n c e c o d e . Maintenance code tell
you
remove, replace, and use the item.
the category of maintenance authorized to USE
and
H--General support category can remove, replace, and
REPAIR support items. The maintenance codes
are
use the item.
entered in the third and fourth positions of the SMR
code
L -- S p e c i a l i z e d repair activity can remove, replace, and
as follows:
u s e the item.
(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 i n t h e t h i r d
D--Depot category can remove, replace, and use the item.
position tells you the lowest maintenance category authorized
t o remove, replace, and use an item. The maintenance
(b) The maintenance code entered in the fourth
code entered in the third position will indicate authorization
position tells whether or not the item is to be repaired and
t o one of the following categories of maintenance.
identifies the lowest maintenance category with the capability
t o do complete repair (i.e., perform all authorized repair
Application/Explanation
Code
functions). This position will contain one of the following
C--Crew or operator maintenance done within organ-
maintenance  codes.
i z a t i o n a l or aviation maintenance.
OOrganizational  or  aviation  unit
category
can
remove,
r e p l a c e , and use the item.
NOTE
Some limited repair may be done on the item at a lower category of maintenance, if
authorized by the Maintenance Allocation Chart (MAC) and SMR codes.
Code
Application/Explanation
OOrganizational  or  aviation  unit  is  the  lowest  category
ZNonreparable.
No
repair
is
authorized.
that can do complete repair of the item.
B--No repair is authorized. ( No parts or special tools are
F -- D i r e c t support or aviation intermediate is the lowest
authorized for the maintenance of a "B" coded
item). However, the item may be reconditioned by
category that can do complete repair of the item.
a d j u s t i n g , lubricating, etc., at the user category
H -- G e n e r a l support is the lowest category that can do
c o m p l e t e repair of the item.
(3) R e c o v e r a b i l i t y c o d e . R e c o v e r a b i l i t y c o d e s a r e
L S p e c i a l i z e d repair activity ( designate the specialized
assigned to items to indicate the disposition action on
repair activity) is the lowest category that can do
unserviceable items. The recoverability code is entered
c o m p l e t e repair of the item.
in the fifth position of the SMR Code as follows:
DDepot is the lowest category that can do complete
repair of the item.
3

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