TM 5-3610-294-13&P
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 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 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.
Code
Application/Explanation
C-- Crew or operator maintenance done within organizational 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 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.
F-4
