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TM 10-4930-247-13&P
AO - (Assembled by
Unit/ AVUM
Items with these codes are not to be requested/requisitioned
Level)
individually. The parts that make up the assembled item must be
AF - (Assembled by
requisitioned or fabricated and assembled at the level of
DS/AVIM Level)
maintenance indicated by the source code. If the 3rd position code of
AH - (Assembled at GS
the SMR code authorizes you to replace the item, but the source code
Category)
indicates the items are assembled at a higher level, order the item
AL - (Assembled by
from the higher level of maintenance.
SRA)
AD - (Assembled by
Depot)
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 CAGEC 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 CAGEC 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 tell you the level(s)! of the 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.
Maintenance
Code
Application/Explanation
C
Crew or operator maintenance done within unit/AVUM maintenance.
O
Unit level/AVUM can remove, replace, and use the item.
F
Direct support/AVIM maintenance 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.
Change 1 C-3
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