TM 10-4510-209-13&P
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MO-Made at
Items with these codes are not to be
unit/AVUM level
requisitioned/requested individually. They must be
MF-Made at DS/AVIM
made from bulk material which is identified by the
level
P/N in the DESCRIPTION AND USABLE ON CODE
MH-Made at GS level
(UOC) column and listed in the bulk material group
ML-Made at SRA
work package of the RPSTL. If the item is
MD-Made at depot
authorized to you by the 3rd position code of the
SMR code, but the source code indicates it is made
at higher level, order the item from the higher level
of maintenance.
Items with these codes are not to be
AO-Assembled by
requested/requisitioned individually. The parts that
unit/AVUM level
make up the assembled item must be requisitioned
AF-Assembled by
or fabricated and assembled at the level of
DS/AVIM level
maintenance indicated by the source code. If the
AH-Assembled by GS
3rd position of the SMR code authorizes you to
level
replace the item, but the source code indicates the
AL-Assembled by SRA
item is assembled at a higher
AD-Assembled by
level, order the item from the higher level of
depot
maintenance.
XA
Do not requisition an "XA" coded item. Order the
next higher assembly. (Refer to NOTE below.)
XB
If an item is not available from salvage, order it
using the CAGEC and P/N.
XC
Installation drawings, diagrams, instruction sheets,
field service drawings; identified by manufacturer's
P/N.
XD
Item is not stocked. Order an XD-coded item
through normal supply channels using the CAGEC
and P/N 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 items source 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
support items. The maintenance codes are entered in the third and fourth positions of the SMR code as
follows:
Third Position. 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 the following levels of maintenance:
Maintenance
Code
Application/Explanation
C-
Crew or operator maintenance done within
unit/AVUM maintenance.
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