TM 10-4610-234-23P
Source
Explanation
Code
PA
PB
PC**
PD
PE
PF
PG
KD
KF
KB
Stocked items; use the applicable NSN to request/requisition items with these source codes. They
are authorized to the category indicated by the code entered in the 3rd position of the SMR code.
**NOTE: Items coded PC are subject to deterioration.
Items with these codes are not to be requested/requisitioned individually. They are part of a kit which
is authorized to the maintenance category indicated in the 3rd position of the SMR code. The
complete kit must be requisitioned and applied.
MO
(Made at Unit /Avum Level)
MF
(Made at DS/AVIM Level)
MH
(Made at GS Level)
ML
Made at Specialized Repair
Activity (SRA))
MD
(Made at Depot)
AO
(Assembled by Unit/AVUM
Level)
AF
(Assembled by DS/AVIM
Level)
AH
(Assembled by GS Category)
AL
(Assembled by SRA)
AD
(Assembled by Depot)
Items with these codes are not to be requested/requisitioned individually.
They must be made from bulk material which is identified by the part
number in the DESCRIPTION and USABLE ON CODE (UOC) column
and listed in the Bulk Material group of the repair parts list in this RPSTL.
If the item is authorized to you by the 3rd position code of the SMR code,
but the source code indicates it is made at a higher level, order the item
form the higher level of maintenance.
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 3rd 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.
XA
Do not requisition "XA"-coded item. Order its next higher assembly. (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 manufacturers 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 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:
2
