TM 10-3950-672-24P
(b) The maintenance code entered in the fourth position tells whether or not the item is to be repaired
and identifies the lowest maintenance category with the capability to do complete repair (i.e., perform all authorized
repair functions.) This position will contain one of the following maintenance codes.
NOTE
Some limited repair may be done on the item at a lower category of maintenance, if authorized by
the Maintenance Allocation Chart (MAC) and SMR codes.
Code
Explanation
O-
Organizational or aviation unit is the lowest category that can do complete repair of the item.
F-
Direct support or aviation intermediate is the lowest category that can do complete repair of the
item.
H-
General support is the lowest category that can do complete repair of the item.
L-
Specialized repair activity (designate the specialized repair activity) is the lowest category that
can do complete repair of the item.
D-
Depot is the lowest category 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 assigned for the maintenance of a "B"
coded item). However, the item may be reconditioned by adjusting, lubricating, etc., at the
user category.
(3) Recoverability Code. Recoverability codes are assigned to items to indicate the disposition action on
unserviceable items. The recoverability code is entered in the fifth position of the SMR code as follows:
Recoverability
Code
Application/Explanation
Z-
Nonreparable item. When unserviceable, condemn and dispose of the item at the category of
maintenance shown in third position of SMR Code.
O-
Reparable item. When uneconomically reparable, condemn and dispose of the item at
organizational or aviation unit category.
F-
Reparable item. When uneconomically reparable, condemn and dispose of the item at the direct
support or aviation intermediate category.
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