TM 10-1670-251-12&P
(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 repair may be done on the item at a lower level
of maintenance, if authorized by the Maintenance Allocation
Chart (MAC) and SMR code.) This position will contain one of
the following maintenance codes.
Code
Application/Explanation
O-
Organizational 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 (designate the
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.
C-9
