TM 5-3810-293-20P
(1) Source Code. The source code tells
XA - Do not requisition an "XA"-coded item. Order its
you how to get an item needed for maintenance, repair,
next higher assembly. (Also,
or overhaul of an end item/equipment. Explanations of
refer to the NOTE below.)
XB -
If an "XB" item is not available from salvage,
source codes follows:
order it using the FSCM and part number
given.
Code
Application/Explanation
XC-
Installation drawing, diagram, instruction
PA
Stocked items; use the applicable NSN to
sheet, field service drawing, that is identified
PB
request/requisition items with these source
by the manufacturer's part number.
PC**
codes. They are authorized to the category
XD-
Item is not stocked. Order an "XD"-coded
PD
indicated by the code entered in the 3d
item through normal supply channels using
PE
position of the SMR code.
the FSCM and part number given, if no NSN
PF
is available.
PG
**Items coded PC are subject to deteriora-
NOTE: Cannibalization or controlled exchange, when
tion.
authorized, may be used as source of supply for items
with the above source codes, except for those source
KD
Items with these codes are not to be re-
coded "XA" or those aircraft support items restricted by
KF
quested/requisitioned individually. They are
requirements of AR 700-42.
KB
part of a kit which is authorized to the
maintenance category indicated in the 3d
(2) Maintenance Code.
Maintenance
position of the SMR code. The complete kit
codes tell you the level(s) of maintenance authorized to
must be requisitioned and applied.
USE and REPAIR support items. The maintenance
codes are entered in the third and fourth positions of the
MO-(Made at UM/
Items with these codes are not
SMR Code as follows:
AVUM Level)
to be requested/requisitioned
(a) The maintenance code entered in
individually. They must be
the third position tells you the lowest maintenance level
MF-(Made at IDS/
made from bulk material which
authorized to remove, replace, and use an item. The
AVUM Level)
is identified by the part number
maintenance code entered in the third position will
MH-(Made at IGS
in the DESCRIPTION AND
indicate authorization to one of the following levels of
Level
USABLE ON CODE (UOC)
maintenance.
column and listed in
ML-(Made at Spe-
the Bulk Material group of the
Code
Application/Explanation
cialized Repair
repair parts list in this RPSTL.
C-
Crew or operator maintenance done within
Act (SRA))
If the item is authorized to you
unit
maintenance
or
aviation
unit
by the 3d position code of the
maintenance.
MD-(Made at Depot)
SMR code, but the source code
O-
Unit maintenance or aviation unit category
indicates it is made at a higher
can remove, replace, and use the item.
level, order the item from the
(b) The maintenance code entered in
higher level of maintenance.
the fourth position tells whether or not the item is to be
repaired and identifies the lowest maintenance level with
AO-(Assembled by
Items with these codes are not
the capability to do complete repair (i.e., perform all
UM/AVUM Level) to be requested/requisitioned
authorized repair functions.) (NOTE: Some limited repair
individually. The parts that
may be done on the item at a lower level of maintenance,
AF-(Assembled by
make up the assembled item
if authorized by the Maintenance Allocation Chart (MAC)
IDS/AVIM Level) must be requisitioned or fabri-
and SMR codes.) This position will contain one of the
AH-(Assembled by
cated and assembled at the
following maintenance codes:
IGS Category
level of maintenance indicated
by the source code. If the 3d
Code
Application/Explanation
AL-(Assembled by
position code of the SMR code
O-
Unit maintenance or Aviation unit is the
SRA)
authorizes you to replace the
lowest level that can do complete repair of
item, but the source code indi-
the item.
AD-(Assembled by
cates the item is assembled at
F-
Intermediate Direct support or aviation
Depot)
a higher level, order the item
intermediate is the lowest level that can do
from the higher level of
complete repair of the item.
maintenance.
H-
Intermediate General support is the lowest
level that can do complete repair of the item.
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