Maintenance Code - TM-55-1730-228-13-P0330

TM 55-1730-228-13&P

Code

Explanation

Items with these codes are not to be requested/requisitioned individually The

parts that make up the assembled item must be requisitioned or fabricated and

assembled at the level of maintenance indicated by the source code. If the 3d

position code of the SMR code authorizes you to replace the item, but the

source code indicates the item is assembled at a higher level, order the item

from the higher level of maintenance.

XA - Do not requisition an "XA"-coded item. Order its next higher assembly. (Also, refer to the NOTE

below.)

XB - If an "XB" item is not available from salvage, order it using the FSCM and part number given.

XC - Installation drawing, diagram, Instruction sheet, 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 FSCM

and part number given, if no NSN is available.

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 tells 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 one of the following levels of maintenance

Code

Application/Explanation

-Crew or operator maintenance done within organizational 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 item.

-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.

C-3