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TM 10-4930-246-13&P
C-3.
EXPLANATION
OF COLUMNS (Sections II and III). - continued
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 700-42.
(2)
Maintenance Code. Maintenance codes tell 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 category authorized
to remove, replace, and use an item. The maintenance code entered in the third position will indicate authorization to one
of the following
categories of maintenance.
Code
Application/Explanation
C -Crew or operator maintenance done within unit or aviation unit maintenance.
O - Unit or aviation unit category can remove, replace, and use the item.
F - Intermediate Direct support or aviation intermediate category can remove, replace, and use the item.
H - Intermediate General support level can remove, replace, and use the item.
L - Specialized repair activity can remove, replace, and use the item.
D - Depot category can remove, replace, and use the item.
(b)
The maintenance code entered in the fourth position tells you 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).
(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.) This position will contain one of the following codes.
Code
Application/Explanation
O - Unit or aviation unit is the lowest category that can do complete repair of the item.
F - Intermediate Direct support or aviation intermediate is the lowest category that can do complete repair of the item.
H - Intermediate General support is the lowest category that can do complete repair of the item.
L - Repair restricted to designated specialized repair activity.
D - Depot is the lowest category that can do complete repair of the item.
Z - Non-repairable.
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.
C-4
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