ARMY TM 9-2815-253-24P
AIR FORCE TO 38G1-93-4
MARINE CORPS TM 2815-24P/1
EXPLANATION OF COLUMNS (SECTIONS II AND III). (Continued
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 3rd and 4th positions of the SMR Code as follows:
The maintenance code entered in the 3rd position tells you the lowest maintenance level authorized
to remove, replace, and use an item. The maintenance code entered in the 3rd position will indicate authorization to
one of the following levels of maintenance.
-Crew or operator maintenance done within organization or
aviation unit maintenance.
-Organizational or aviation unit category can remove, replace,
and use the item.
-Direct support or aviation intermediate level can remove,
replace, and use the item.
General support level can remove, replace, and use the item.
-Specialized repair activity can remove, replace, and use the
-Depot level can remove, replace, and use the item.
The maintenance code entered in the 4th position tells whether or not the item is to be repaired and identifies the lowest
maintenance level with the capability to do comptete 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.