TM-9-2815-220-34P
ENGINE WITH CONTAINER; TURBOSUPERCHARGED ,DIESEL, FUEL INJECTION, 90-DEGREE. TYPE, AIR-COOLED, 12-CYLINDER, ASSEMBLY;MODELS AVDS-1790-2DR
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
TM-9-2815-220-34P - Page 8 of 415
SECTION I
TM9-2815-220-34P
(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:
Cod e
P A
P B
PC**
P D
P E
P F
P G
K D
K F
K B
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
3d position of the SMR code.
**Items coded PC are subject to deteriora-
tion.
Items with these codes are not to be
requested/requisitioned 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
U M
AVUM
Level)
MF-(Made at DS/
AVUM
Level)
ML-(Made
a t
Specialized Repair
Act (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)
Items with these codes are not
to be requested/ requisitioned
individually. They must be made
from bulk material which is identi
fied 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 if the
source code indicates it is made
at a higher level, order the item
from the higher level of mainten-
ance.
Items with these codes are not
to be requested/requisitioned
individually The parts that
make up the assembled item
must be requisitioned or fabrica
ted and assembled at the level
of maintenance indicated by
the source code. If the 3d posi-
tion code of the SMR code by
authorizes you to replace the
item, but the source code indi-
AD-(Assemble d
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 ltem. Or-
der 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 identi-
fied by the manufacturer’s part number.
XD -
Item is not stocked. Order an “XD”-
coded item through normal supply chan-
nels 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 indi-
cate authorization to one of the following levels of main-
tenance:
Cod e
C
-
O
-
F
-
H
-
L
-
Appication/Explanation
Crew or operator maintenance done within
unit or aviation unit maintenance.
Unit maintenance or aviation unit category
can remove, replace and use the item.
Direct support or aviation intermediate
level can remove, replace and use the item.
General support level can remove, replace
and use the item.
Specialized repair activity can remove, re-
place and use the item.
2
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