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TM 10-3930-243-20P
PA
PB
PC**
PD
PE
PF
PG
KD
KF
KB
Application/Explanation
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 3d position of the SMR code.
**Items coded PC are subject to
deterioration.
Items with these codes are not to be re-
quisitioned individually. They 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 UMI
AVUM Level)
MF- (Made at DSI
AVUM Level)
MH-(Made at GS
Level)
ML-(Made at Spe-
cialized Repair
Activity
(SRA))
MD-(Made at
Depot)
AO-(Assembled by
UM/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
3d position code of the SMR
code, but the source code
indicates it is made at a higher
level, order the item from 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
indicted by the source code. If
the 3d position code 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
Order its next higher assembly.
refer to the NOTE following, )
XB -
If an “XB” item is not available
item.
(Also
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 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 700-42.
(2) Maintenance Code. Maintenance codes
teli 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.
Application/Explanation
C -
Crew or operator maintenance done
within unit maintenance 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.
D -
Depot level can remove, replace, and use
the item.
(b) The maintenance code entered in the
fourth position tells whether or not the item is to be
repaired and identifies the lowest maintenance level
with the capability to do complete repair (i. e.,
perform all authorized repair functions). (NOTE:
Some limited repair may be done on the item at a
lower level of maintenance, if authorized by the
Maintenance Allocation Chart (MAC) and SMR
codes. ) This position will contain one of the following
maintenance codes:
Application/Explanation
O -
Unit maintenance or aviation unit is the
lowest level that can do complete repair
of the item.
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