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 TM 9-4931-477-24P
(b) The maintenance code entered in the fourth position tells whether or not the item is to be
repaired and identifies the lowest maintenance 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.
(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 3d position of SMR code.
O
- Reparable item. When uneconomically 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 inter-mediate level.
H
- Reparable item. When uneconomically reparable, condemn and dispose of
the item at the general support level.
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