TM 10-4320-317-23P
(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 the
following levels of maintenance.
Maintenance
Code
Application/Explanation
C - Crew or operator maintenance done within the organization 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.
L -
Specialized repair activity can remove, replace, and use the item.
D - Depot level 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 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 level 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.
(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
Codes
Application/Explanation
Z - Nonreparable item. When unserviceable, condemn and dispose of the item at the level of maintenance
shown in 3rd position of SMR Code.
O - Reparable item. When not economically reparable, condemn and dispose of the item at organizational or
aviation unit level.
F - Reparable item. When uneconomically reparable, condemn and dispose of the item at the direct support
or aviation intermediate level.
H - Reparable item. When uneconomically reparable, condemn and dispose of the item at the general
support level.
D - Reparable item. When beyond lower level repair capability, return to depot. Condemnation and disposal
of item not authorized below depot level.
L -
Reparable item. Condemnation and disposal not authorized below specialized repair activity (SRA).
A - Item requires special handling or condemnation procedures because of specific reasons (e.g., precious
metal content, high dollar value, critical material, or hazardous material). Refer to appropriate
manuals/directives for specific instructions.
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