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 TM 55-1905-219-20P-2
NOTE
Cannibalization or controlled exchange, when authorized, may be used as a source of supply for
items with the above source codes, except for those source coded "XA" or those aircraft support items
restricted by requirements of AR 750-1.
(2) Maintenance Code. Maintenance codes tells you the level(s) of maintenance authorized to USE and REPAIR
support items. The maintenance codes are entered in the third and fourth positions of the SMR code as follows:
(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 one
of the following levels of maintenance.
Code
Application/Explanation
C-
Crew or operator maintenance done with unit or aviation unit maintenance.
O-
Unit 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-
Unit 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 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:
3
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