TM 10-6630-246-12&P
TM 09241B-12&P
C-3.
EXPLANATION OF COLUMNS (Sections II and Ill). - 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 750-1 as contained in the maintenance management update.
(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 - Direct support or aviation intermediate category 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 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 - 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 - 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
