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SECTION I
TM 10-3930-603-24P
(1)
Source Code. The source code tells
you how to get an item needed for maintenance, repair
or overhaul of an end item/equipment. Explanations of
source codes follows:
Code
Application Explanation
PA
Stocked items; use the applicable NSN to
PB
request/requisition items with these
PC**
source codes. They are authorized to the
PD
category indicated by the code entered in
PE
3d position of the SMR code.
PF
PG
**ltems coded PC are subject to deteriora-
tion.
KD
Items with these codes are not to be
KF
requested/requisitioned individually. They
KB
are part of a kit which is authorized to the
maintenance category indicated in the 3d
position of the SMR code. The complete Kit
must be requisitioned and applied.
MO—(Made at UM
Items with these codes are not
AVUM Level)
to be requested/ requisitioned
MF—(Made at DS/
individually. They must be made
AVUM Level)
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
ML—(Made at
of the repair parts list in this
Specialized Repair
RPSTL. If the item is authorized
Act (SRA))
to you by the 3d position code of
the SMR code, but if the
MD—(Made at
source code indicates it is made
Depot)
at a higher level, order the item
from the higher level of mainten-
ance.
AO—(Assemble by
Items with these codes are not
UM/AVUM Level)
to
be
requested/requisitioned
individually. The parts that
AF—(Assembled by
make up the assembled item
DS/AVIM Level
must be requisitioned or fabricated
and assembled at the level
AH—(Assembled by
of maintenance indicated by
GS Category)
the source code. If the 3d position
code of the SMR code by
AL—(Assembled by
authorizes you to replace the
SRA)
item, but the source code indi-
AD—(Assembled
cates the item is assembled at a
by Depot)
bled 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 from salvage
order it using the CAGE and part number
given
XC—
Installation
drawing,
diagram,
instruction
sheet, field service drawing, that is identified
by the 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 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
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:
(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
unit or aviation unit maintenance.
O—
Unit maintenance 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.
2
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