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TM 5-4930-234-13&P
Explanation
Explanation
XA--Do not requisition an "XA"-coded item. Order its next higher assembly. (Also, refer to the NOTE
below.)
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
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 is available.
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
750-1.
(2) Maintenance Code. 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, replace, and use an item. The
maintenance code entered in the third position will indicate authorization to one of
the following levels of maintenance.
Code
Application/Explanation
C
--Crew or operator maintenance done within organizational or aviation unit
maintenance.
0
--Organizational or aviation unit category can remove, replace, and use the
item.
F
--Direct support or aviation intermediate level can remove, replace, and use
the item.
F-3
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 items are assembled at a higher level, order the
item from the higher level of maintenance.
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