(2) Maintenance Code.

3. EXPLANATION OF COLUMNS (SECTIONS II AND III) (Cont).

TM-9-2350-285-24P Carrier Personnel Full Tracked Armored M113A3 2350-01-219-7577 Carrier Command Post Light Tracked M577A3 2350-01-369-6085 Manual
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TM 9-2350-285-24P 3 3. EXPLANATION OF COLUMNS (SECTIONS II AND III) (Con’t). Code Application/Explanation XC. . . . . . . . . . . . . .Installation drawing, diagram, instruction sheet, or field service drawing that is identified by manufacturer's part number. XD. . . . . . . . . . . . . .Item is not stocked. Order an “XD”-coded item through normal supply channels using the CAGEC and part number given, if no NSN is avail- able. (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 indi- cate authorization to one of the following levels of maintenance: Code Application/Explanation C . . . . . . . . . . . . . . .Operator or Crew Maintenance done within Unit Maintenance or aviation unit maintenance. O . . . . . . . . . . . . . . .Unit Maintenance or aviation unit can remove, replace, and use the item. F . . . . . . . . . . . . . . .Direct Support Maintenance or aviation intermediate maintenance can remove, replace, and use the item. H . . . . . . . . . . . . . . .General Support Maintenance can remove, replace, and use the item. L . . . . . . . . . . . . . . .Specialized Repair Activity (SRA) can remove, replace, and use the item. D . . . . . . . . . . . . . . .Depot Maintenance can remove, replace, and use the item. 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. (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). The maintenance code in the fourth position will indicate authorization to one of the following levels of maintenance: Code Application/Explanation O . . . . . . . . . . . . . . .Unit Maintenance or aviation unit maintenance is the lowest level that can do complete repair of the item. F . . . . . . . . . . . . . . .Direct Support Maintenance or aviation intermediate maintenance is the lowest level that can do complete repair of the item. H . . . . . . . . . . . . . . .General Support Maintenance is the lowest level that can do complete repair of the item. L . . . . . . . . . . . . . . .Specialized Repair Activity (SRA) is the lowest level that can do complete repair of the item. D . . . . . . . . . . . . . . .Depot Maintenance 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 recondi- tioned by adjusting, lubricating, etc., at the user level.

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