DRAFT
TM 5-4210-249-13&P-4
0610
Table 2.
Source Code Explanation. (Continued)
Source Code
Explanation
AO - Assembled by unit/AVUM
Items with these codes are not to be requested/requisitioned individually. The
level
parts that make up the assembled item must be requisitioned or fabricated and
AF - Assembled by DS/AVIM
assembled at the level of maintenance indicated by the source code. If the 3rd
level
position of the SMR code authorizes you to replace the item, but the source
AH - Assembled by GS level
code indicates the item is assembled at a higher level, order the item from the
AL - Assembled by SRA
higher level of maintenance.
AD - Assembled by depot
AG - Navy only
XA
Do not requisition an "XA" coded item. Order the next higher assembly. (Refer
to the NOTE below.)
XB
If an item is not available from salvage, order it using the CAGEC and part
number.
XC
Installation drawings, diagrams, instruction sheets, field service drawings;
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
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Cannibalization or controlled exchange, when authorized, may be used as a source of
supply for items with the above source codes, except for those coded "XA" or those
aircraft support items restricted by requirements of AR 750-1.
Maintenance Code. Maintenance codes tell you the level(s) of maintenance authorized to use and repair
2.
support items. The maintenance codes are entered in the third and fourth position of the SMR code as
follows:
Third Position. The maintenance code entered in the third position tells you the lowest maintenance
a.
level authorized to remove, replace, and use an item. The maintenance code entered in the third
position will indicate authorization to the following levels of maintenance.
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Table 3.
Third Position Maintenance Code Explanation.
Maintenance
Application/Explanation
Code
O
Unit level/AVUM maintenance can remove, replace, and use the item.
F
Direct support/AVIM maintenance can remove, replace, and use the item.
H
General support maintenance can remove, replace, and use the item.
L
Specialized repair activity can remove, replace, and use the item.
G
Afloat and ashore intermediate maintenance can remove, replace, and use the
item (Navy only).
K
Contractor facility can remove, replace, and use the item.
Z
Item is not authorized to be removed, replaced, or used at any maintenance level.
D
Depot can remove, replace, and use the item.
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