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 TM 9-2330-331-14&P
0079 00
EXPLANATION OF COLUMNS IN THE REPAIR PARTS LISTS AND SPECIAL TOOLS LIST WORK
PACKAGES - Continued
X C
Installation drawings, diagrams, instruction sheets,
field service drawings; identiifed by manufacturer's P/N.
X D
Item is not stocked. Order an XD-coded item through
normal supply channels using the CAGEC and P/N
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 items source coded "XA" or those aircraft support items restricted by
requirements of AR 750-1.
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:
Third Position. 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 the following levels of maintenance:
Maintenance
Code
Application/Explanation
C
Crew or operator maintenance done within unit/AVUM maintenance.
O
Unit level/AVUM maintenance can remove, replace, and use the item.
F
Direct support/AVIM maintenance can remove, replace, and use the item.
H
General support maintenance can remove, replace, and use the item.
L
Specialized repair activity can remove, replace, and use the item.
D
Depot can remove, replace, and use the item.
Fourth Position. The maintenance code entered in the fourth position tells you whether or not
the item is to be repaired and identifies the lowest maintenance level with the capability to do
complete repair (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.
0079 00-3
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