TM 55-4920-244-14
Code
Application/Explanation
C
-Crew or operator maintenance done within organizational or
aviation unit maintenance.
O
-Organizational or aviation unit category can remove, replace, and
use the item.
F
-Direct support or aviation intermediate level can remove, replace,
and use the item.
H
-General support level can remove, replace, and use the item.
-Specialized repair activity can remove, replace, and use the item.
L
-Depot level can remove, replace, and use the item.
D
(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 codes.) 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.
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.
Change 4
