TM 5-3815-221-14&P
(1) Source Code. The source code tell how to
XB -
If n "XB" item is not available from sal-
get an item needed for maintenance, rep overhaul of an
vage, order it using the CAGE and part
end item/equipment. Explanation source codes follows:
number given.
XC -
Installation drawing, diagram, instruction
Code
Application/Explanation
PA
Stocked items; use the applicable NSN
sheet, field service drawing, that is iden-
PB
request/requisition items with these source
tified : by the manufacturer's part
PC**
number.
codes. They are authorized to the category
XD -
ltem is not stocked. Order an
PD
indicated by the code entered in the 3d
"XD"-coded item through normal supply
PE
position of the SMR code.
channels using the CAGE and part
PF
number given, if no NS 4 is available.
PG
*Items coded PC are subject to deteriora
NOTE: Cannibalization or controlled exchange, when
tion.
authorized, ma) be used as source of supply for items
KD
Items with these codes are not to be re-
with the above ;source codes, except for those source
KF
quested/requisitioned individually .The
coded "XA" or those aircraft support items restricted by
KB
part of a kit which is authorized to the
requirements of AR 700-42.
maintenance category indicated in the 3d
(2) Maintenance Code. Maintenance codes tell
position of the SMR code. The complete
you the level(s) )of maintenance authorized to USE and
kit must be requisitioned and applied.
REPAIR support items. The maintenance codes are
MO-(Made at Org
Items with these codes a
entered in the bird and fourth positions of the SMR Code
Level)
to be requested/requisitioned
as follows
individually. They must be
(a) The maintenance code entered in the
MF-(Made at DS/
made from bulk material
third position tells you the lowest maintenance level
AVUMLevel)
is identified by the part
authorized to remove, replace, and use an item. The
MH-(Made at GS
ber in the DESCRIPTION
maintenance code entered in the third position will
Level
AND USABLE ON CODE
indicate authorization to one of the following levels of
(UOC) column and list
maintenance.
ML-(Made at Spe-
the Bulk Material group
Coda
Application/Explanation
cialized Repair
repair parts list in this RF
C-
Crew, or operator maintenance done within
Act (SRA))
If the item is authorized to you
unit maintenance or aviation unit maintenance.
by the 3d position code
O-
Organizational maintenance or aviation unit
MD-(Made at Depot)
SMR code, but the s
category can remove, replace, and use 'e
code indicates it is made at a
item.
higher level, order the
F-
Direct support or aviation intermediate level
from the higher level of main-
can remove, replace, and use the item
tenance.
H-
General support level can remove,
AO-(Assembled by
Items with these codes a
replace, and use the item.
Org Level)
to be requested/requisitioned
L-
Specialized repair activity can remove,
individually. The parts
replace, and use the item.
AF-(Assembled by
make up the assembled item
D-
Depot level can remove, replace, and use
DSIA VIM Level)
must be requisitioned or
the item.
AH-(Assembled by
cated and assembled;
(b) The maintenance code entered in the
GS Category
level of maintenance indicated
fourth position tells whether or not the item is to be
by the source code. If the 3d
repaired and identifies the lowest maintenance level with
AL-(Assembled by
position code of the SMR
the capability to do complete repair (i.e., perform all
SRA)
authorizes you to replace the
authorized repair functions.) (NOTE: Some limited repair
item, but the source code
may be done on the item at a lower level of maintenance,
FAD- (Assembled by
cates the item Is assembled at
if authorized by the Maintenance Allocation Chart ( AAC)
Depot)
a higher level, order the item
and SMR codes.) This position will contain one of the
from the higher level of main
following maintenance codes:
tenance.
Do not requisition an "XA"-coded
XA -
Order its next higher assembly. (Also
to the NOTE below.)
C-2
