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TM 10-5430-242-12&P
0037 00
Change 1
0037 00-2
Source Code. The source code tells you how you get an item needed for maintenance, repair, or
overhaul of an end item/equipment. Explanations of source codes follow:
Source Code
Application/Explanation
PA
PB
PC
PD
PE
PF
PG
Stock items; use the applicable NSN to
requisition/request items with these source codes.
They are authorized to the level indicated by the code
entered in the 3rd position of the SMR code.
NOTE
Items coded PC are subject to deterioration.
KD
KF
KB
Item with these codes are not to be
requested/requisitioned individually. They are part of
a kit which is authorized to the maintenance level
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 SRA
MD – Made at depot
Items with these codes are not to be
requisitioned/requested individually. They must be
made from bulk material which is identified by the P/N
in the DESCRIPTION AND USABLE ON CODE
(UOC) column and listed in the bulk material group
work package of the 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 higher level,
order the item from the higher level of maintenance.
AO – Assembled by unit/AVUM level
AF – Assembled by DS/AVIM level
AH – Assembled by GS level
AL – Assembled by SRA
AD – Assembled by depot
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 of the
SMR code authorizes you to replace the item, but the
source 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 the next
higher assembly. (Refer to the 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.
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