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TM 1-6625-736-13 & P
Code
Explanation
AO (assembled at org/AVUM Level)
Items with these codes are not to be requested/requisitioned in-
AF (assembled at DS/AVIM Level)
dividually. The parts that make up the assembled item must be
AH (assembled at GS Level)
requisitioned or fabricated and assembled at the level of mainte-
AL (assembled at Specialized
nance indicated by the source code. If the 3rd position code of
Repair Act [SRA])
the SMR code authorizes you to replace the item, but the source
AD (assembled at Depot)
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 NOTE below.)
XB-
If an "XB" item is not available for salvage, order it using the Commercial and
Government Entity (CAGE) 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 CAGE 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 700-42.
(2) Maintenance Code. Maintenance code 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.
O
- 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.
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.
C-3
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