TM 9-2320-363-24P
3.
EXPLANATION OF COLUMNS (SECTIONS II AND III) (Con't).
Code
Application/Explanation
XC ..............................Installation drawing, diagram, instruction sheet, or field service drawing
that is identified by manufacturer's part number.
XD ..............................Item is not stocked. Order an "XD"-coded item through normal supply
channels using the CAGEC and part number given, if no NSN is avail-
able.
(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 indicate authorization to one
of the following levels of maintenance:
Code
Application/Explanation
C .................................Operator or Crew Maintenance done within Unit Maintenance or aviation
unit maintenance.
O ................................Unit Maintenance or aviation unit can remove, replace, and use the item.
F .................................Direct Support Maintenance or aviation intermediate maintenance can
remove, replace, and use the item.
H ................................General Support Maintenance can remove, replace, and use the item.
L .................................Specialized Repair Activity (SRA) can remove, replace, and use the item.
D ................................Depot Maintenance can remove, replace, and use the item.
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.
(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). The maintenance code in the fourth position will indicate authorization to one of the following levels of
maintenance:
Code
Application/Explanation
O ................................Unit Maintenance or aviation unit maintenance is the lowest level that can do
complete repair of the item.
F .................................Direct Support Maintenance or aviation intermediate maintenance is the lowest
level that can do complete repair of the item.
H ................................General Support Maintenance is the lowest level that can do complete repair of
the item.
L .................................Specialized Repair Activity (SRA) is the lowest level that can do complete repair
of the item.
D ................................Depot Maintenance is the lowest level that can do complete repair of the item.
Z .................................Nonreparable. No repair is authorized.
B ................................No repair is authorized. (No parts or special tools are authorized for the
maintenance of a "B"-coded item.) However, the item may be reconditioned by
adjusting, lubricating, etc., at the user level.
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