TM 9-2330-383-14&P
(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.
Maintenance
Code
Application/Explanation
C-
Crew or operator maintenance done within unit or
aviation unit maintenance.
O-
Unit or aviation unit maintenance can remove, replace,
and use the item.
F-
Direct support 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 can remove, replace, and use
the item.
D-
Depot 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 repairs may be done on the item at a lower level of
maintenance, if authorized by the Maintenance Allocation Chart (MAC)
and SMR codes.
Maintenance
Code
Application/Explanation
O-
Unit or aviation unit is the lowest level that can do
complete repair of the item.
F-
Direct support or aviation intermediate is the lowest
level that can do complete repair of the item.
H-
General support is the lowest level that can do complete
repair of the item.
L-
Specialized repair activity is the lowest level that can
do complete repair of the item.
D-
Depot 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.
F-4
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